Manuale d’uso / di manutenzione del prodotto EN Series del fabbricante Compaq
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Technical Refere nce Guide For t h e Com paq De skpr o EN Se r ies of Pe r so nal Co mpute r s De s ktop and Minito w e r F o rm F acto rs.
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Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 i NOTICE The inf o rmation in th is do cume n t is su b j ec t to c h an ge w ithou t notic e.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on–- September1998 ii.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 iii TABLE O F CO NTENTS CHAPTER 1 INT RO DUCT IO N ......................................................
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on–- September1998 iv CHA PT ER 4 S YST EM S UP PO RT......................................................................
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 v 5.5 PA RA LL EL I NTER FA CE ..........................................................................
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on–- September1998 vi 8.3 MEMO RY DETECTI ON AND CONFIGURATION ............................................................
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 vi i APPENDIX C KEY B O ARD .............................................................................
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on–- September1998 v iii LIST OF FIGURE S F IGU RE 2–1. C OMPA Q D ESK PRO EN P ERS ONAL C OM PU TER WI TH M ONIT OR ....
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 ix F IGU RE C–1. K EYSTROKE P ROCESSI NG E LEMENT S , B LOCK D IA GRAM ................................
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on–- September1998 x LIST O F TABLES T ABLE 1–1. A CRONYMS AND A BBREV IATIONS ..........................................
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 xi T ABLE 5–9. DB -9 S ERIAL C ONNECTOR P INOU T ......................................................
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on–- September1998 xii T ABLE D–1. O P ERA TING S PECIF ICATIONS ........................................................
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 1-1 Ch apter 1 INTRODUCT ION 1.
Chapter 1 Introduction Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 1-2 1.2 NOTATIONAL CONVENTIONS 1.2.1 VALUES H exade cimal v alues ar e indic ated b y th e le tter “ h” fo llow ing an alph a-numerical v alue.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 1-3 1.3 COM M ON ACRONYM S AND AB B REVIATIONS Tab le 1-1 lis ts th e ac rony ms and abb r ev iations use d in th is guide.
Chapter 1 Introduction Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 1-4 Table 1-1.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 1-5 Table 1-1.
Chapter 1 Introduction Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 1-6 Table 1-1.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 2-1 Ch apter 2 SY STEM OV ERVIEW 2.
Chapter 2 Sys tem Over view Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 2-2 2.2 FEATURES AND OPTIONS This se ctio n desc r ibe s the standard f eatures an d availab le o ptio ns.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 2-3 2.
Chapter 2 Sys tem Over view Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 2-4 2.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 2-5 Item Function 1 AC Line I n Connect or 2 Sma rt Co.
Chapter 2 Sys tem Over view Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 2-6 2.3.2 CHAS S IS LAYOUTS Figures 2-4 an d 2-5 sh ow th e lay out o f key asse m blies w it h in th e deskto p a n d min it ow er ch a ssis res pe ctiv ely .
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 2-7 Figu re 2–5.
Chapter 2 Sys tem Over view Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 2-8 2.3.3 B OARD LAYOUTS Figure 2-6 s how s the lo catio n o f c onnec tors and sw itches fo r the sy s tem b oard, w h ich is the s ame f o r all mo de ls and b oth f o rmfac tors.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 2-9 Figure 2-7 sho ws the co n n ecto r an d sw itch loc ations f or th e tw o ty pe s o f b ackplane b o ards.
Chapter 2 Sys tem Over view Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 2-10 2.4 SYS TEM ARCHITECTURE The Co mpaq D es kpro EN Serie s o f Pe r so nal Co mpute r s is b ase d o n an In tel P entium II pr oc ess or matched w ith th e Intel 440B X AGPse t.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 2-11 Figu re 2–8. Comp aq D es kpro EN Sy ste m Architec ture, B loc k diagram Pentium II or Cele ron Pro cesso r 82443BX (North Bridge) 82371 (South Bridge) 33-MHz 32-Bi t PCI Bus Pri.
Chapter 2 Sys tem Over view Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 2-12 2.4.1 PROCESSOR The D es kpro EN Serie s inclu des mo de ls b ase d on P entium II and Ce lero n pr oc es so rs.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 2-13 2.4.2 SYS TE M MEMO RY Th i s sy stem pr ov i des th r ee 168-pin DIMM so ckets w i th 16, 32 or 64 m egaby tes o f R AM installed de pending on mode l.
Chapter 2 Sys tem Over view Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 2-14 2.4.5 S ERIAL AND PARALLEL INTERFACES All mo dels in clude two se r ial ports and a paralle l po r t a c ce ssib le at the r ear o f the chass is.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 2-15 2.5 S PECIFICATIO NS This se ctio n in clude s the e n viro n mental, e lec trical, and phy sic al spe ci f icatio ns f or the Co mpaq DESKPRO EN Ser ies Per sona l Compu t er s.
Chapter 2 Sys tem Over view Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 2-16 Table 2–7. Diske tte D rive Spe cif icatio ns Table 2-7. Disket t e Drive S pec if ications (Compaq SP # 179161- 001) Paramet er Measurement Media Ty pe 3.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 2-17 Table 2–9. Hard D r iv e Sp ec ific ations Table 2-9. Hard Drive S pec if icat ions Param eter 3.2 GB (# 166873-001) 4.
Chapter 2 Sys tem Over view Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 2-18 This page is intentio n ally b lank.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 3-1 Ch apter 3 PROCESSOR/ MEMORY SUB SYSTE M 3.
Chapter 3 Processor/Memory Subsystem Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 3-2 66-/100-MH z Mem.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 3-3 3.2.1 PROCESSOR The sy s tem b oard includ es a Slo t 1-ty pe in terfac e that acc ommo dates a Pentium II o r Ce lero n proce sso r .
Chapter 3 Processor/Memory Subsystem Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 3-4 3.2.1. 2 Celeron Processor Sele ct sy stems are shipped w ith th e Intel Celeron pr oc esso r .
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 3-5 3.2.2 PROCESSO R CHANGING/UPGRADING The slo t 1 design allow s f or easy c h an gin g an d/o r upgr adin g of th e pro ce sso r/cache c o mplex.
Chapter 3 Processor/Memory Subsystem Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 3-6 3.2.3 SYS TE M MEMO RY The sy s tem b oard c o ntain s thr ee 168-pin DIMM so cke t s f o r sy ste m memo r y .
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 3-7 Table 3–3. SPD Ad dr ess Ma p ( SDRAM DIMM) Table 3-3. SPD Addre ss Map (SDRAM DIMM) Byte Descript ion Not es Byte D escript ion Not es 0 No.
Chapter 3 Processor/Memory Subsystem Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 3-8 Figure 3-3 sh ow s th e sy ste m memory m ap for th e sy stem. NOTE: All loc ations in memor y are c ac heable.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 3-9 3.2.4 S UB SYSTEM CONFIGURATION The 443B X north bridge c o mpo nen t pr ov i des the c onfiguration f unctio n fo r th e proc ess o r/memo ry sub sy ste m.
Chapter 3 Processor/Memory Subsystem Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 3-10 This page is intentio n ally b lank.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-1 Ch apter 4 SYSTE M SUPPORT 4.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-2 4.2 PCI BUS OVERVIEW NOTE: This se ctio n desc r ibe s the PC I bus in general and high ligh ts b us imple mentatio n in th is partic ular sy ste m.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-3 4.2.1 PCI CONNECTOR Figu re 4–2. PCI Bus Co n n ecto r (32-Bit Ty pe) Table 4–1. PCI Bus Co n n ecto r Pin out Table 4-1.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-4 4.2.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-5 4.2.3 PCI B US TRANSACTIONS The PCI b us co n sists o f a 32-b it path (AD31-00 lines) that use s a multiple xed s cheme fo r han dling bo th addres s and data transf ers.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-6 Figure 4-3 sho w s h ow th e lo ading of 0CF8h r es ults in a Ty pe 0 c onf iguration cy cle on th e PCI b us.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-7 Not r equired Table 4–4. PCI F unctio n Co nfigu ration A cces Table 4-4. PCI F unct ion Configurat ion Access PCI Function Device No.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-8 Table 4–5.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-9 4.2.5 PCI INTERRUPT MA PPING Th e PCI b us prov ides f or fo ur in ter r upt sign a l s; INTA-, INTB-, INTC-, a n d INTD-.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-10 4.2.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-11 4.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-12 4.3.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-13 AGP 2X T ran sfers In AGP 2X t r a n sfers, clockin g i s basi c ally th e same as in 1X tran sf ers e xc ept that the 66-M H z CL K signal is u sed to qualif y o nly th e c o ntr ol s ignals.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-14 4.3.2 AGP CONFIGURATION AGP bus oper ations require th e c onf iguration o f c ertain paramete rs invo lv ing sy ste m memo r y access by t h e AGP gr a p h i cs ad a p t er .
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-15 4.3.3 AGP CONNECTOR Figu re 4–7. AGP Bus Con n ector Table 4–8. AGP Bus Con n ector Pi n out Table 4-8.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-16 4.4 ISA B US OVERVIEW NOTE: This se ctio n desc r ibe s the IS A bu s in general and h ighligh ts b us imple mentatio n in th is partic ular sy stem.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-17 4.4.1 ISA CONNECTOR Figu re 4–9. ISA Expan sion Conn ecto r Table 4–9. IS A E xp ans io n Co nnec to r Pi nou t Table 4-9.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-18 4.4.2 IS A B US TRANS ACTIONS The ISA b us s uppo rt s 8- and 16-bit tran sfe r s at an 8-MH z r ate. De vic es limited to 8-b it tran sf ers use th e lo we r by te po rtion (data lin es 7.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-19 When the address c h anges, dev ice s o n the bu s may deco de the latc ha ble address (L A23..17) lin es and th en latch them.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-20 4.4.3 DIRECT M EMO RY ACCESS Dir ect Mem or y Access (DMA) is a m et h od by wh i ch a n ISA d evice a ccesses system m emor y with out i n volvin g t h e m i cr opr ocessor.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-21 4.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-22 Th e RA M refresh is designed to pe rform a memory read cy cle o n each of t h e 512 row addr esse s in th e DR AM me mory spac e.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-23 4.4.4 INTERRUPTS The mic r o pro ce sso r use s tw o ty pes of interr upts; mas kable and n onmask ab le.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-24 Table 4–13.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-25 4.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-26 SMI- Gener ation The S MI- (S y ste m Manageme n t Interr upt) is ty pic ally use d f or po w er manageme nt func tio ns.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-27 4.4.5 INTERVAL TIM ER The interval time r generates puls es at so f tw a r e (programmab le) inte rvals.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-28 4.5 SYS TEM CLOCK DISTRIB UTION The sy stem use s a Cy pr ess CY 2280 or co mpatible part f or generatio n of most c l oc k sign als.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-29 4.6 REAL-TIM E CLOCK AND CONFIGURATION M EM O RY The R eal-time cloc k (RTC) and co n f iguration memo ry functio n s are prov ided b y th e PC87307 I/O c ontr olle r.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-30 Tab le 4-18 lis ts th e mapping of th e co n figuration me mory . Lo cations 00h-3Fh may be a cces sed using OUT/IN asse mbly l a n guage in str uctions o r BIOS f un ction INT15, AX=E823h .
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-31 RTC Control Re g i st e r A, B yte 0 Ah Bit Function 7 Update in Pr ogress . Read only . 0 = Time update will not oc cur befor e 2444 us 1 = Time update will oc cur w ithin 2444 us 6.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-32 6..0 Reserved Co nfiguration Byte 0Eh, Diagnos tic Status Default V alue = 00h This b y te co ntain s diagno stic status d ata.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-33 Co nfiguration Byte 13h, Security Fu nctions Defa.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-34 Co nfiguration Bytes 19h-1Ch, Hard Drive Types B y te 19h c o ntain s the hard drive ty pe f o r dr ive 1 o f the primary co n tr olle r if b y te 12 h b its <7 .
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-35 Co nfig u ratio n Byte 26h , Au xiliary Periph er.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-36 Co nfig u ratio n Byte 29h , Miscellaneo us Co nfig ura tio n Da ta Default V alue = 00h Bit Function 7.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-37 Configurati on By te 2Dh, Addi t i onal Fl ag s Default V alue = 00h Bit Function 7.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-38 Co nfiguration Byte 35h, APM Statu s Flags Default V alue = 11h Bit Function 7.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-39 Co nfiguration Byte 45h, Ke yboard Sn oop Data De.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-40 Co nfiguration Byte 52h, B oard Rev ision T h is byte h ol d s t h e boa r d r evi s i on as c op i ed fr om t h e boot bl ock s ec t or .
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-41 Co nfig u ratio n Byte 83h , Microp ro cesso r Iden tificatio n This b y te hold s the co mpo n ent ID and c h ip rev isio n of the mic ropro ce sso r .
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-42 Co nfiguration Byte 90h, 91h, Total Su per Extended Memo r y Con figured This b y te hold s the v alue of the amo un t of ex tende d sy ste m memo ry th at is co nfigu r ed .
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-43 Co nfiguration Byte 94h, ROM Flash/Po wer B u tton Statu s Default V alue = 00h Bit Function 7.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-44 Configurati on By te 9Dh, E SS Audio Co nfi gurat i .
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-45 Co nfig u ratio n Byte C7 h, C 8h, S erial Po rts 1 and 2 (Res pectiv ely) Co nfig u ratio n Bytes Default V alue = FEh, 7Dh Bit Function 7.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-46 4.7 I/O M AP AND REGISTER ACCESSING 4.7.1 SYSTEM I/O MAP Table 4–19. System I/ O Ma p Table 4-19 . System I/O Ma p I/O Port Function 0000.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-47 4.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-48 Table 4–21.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-49 4.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-50 87307 GPI O Utiliz ation The 87307 I/O Co n tr olle r pr ov ides 11 ge n eral pur pose pin s th at can be indiv i dually co nfigured as eithe r inputs o r outp uts.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-51 4.8 SYS TEM M ANAGEM ENT SUPPORT This se ctio n desc r ibe s the har dware s upport of fu nctio n s invo lving se curity , saf ety , identific ation, and po we r co n sumptio n of th e s y ste m.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-52 4.8.1 FLAS H RO M WRITE PRO TECT The s y ste m BI OS f irmw are is c o ntain ed in a f lash R OM de vic e that can b e re- w r itten w ith upd ated co de if nec es sary .
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-53 4.8.3 I/O SECURITY The 87307 I/O c ontr olle r allow s v ari ous I/O functio ns to b e disab led through co n f iguration registe rs.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-54 4.8.5 TEM PERATURE SENSING This sy ste m emplo y s tw o se n so rs f or mo nitoring the te mpe rature inside th e c hassis .
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-55 4.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-56 4.8.8 POWER M ANAGEM ENT Th is sy st em pr ov i des baselin e ha r dwar e support of ACPI- and APM-comp liant firmw ar e and so f tw ar e.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-57 4.8.8. 3 Har d Drive Spindow n Contr ol The time out p aramete r sto r ed in the SI T rec ord 04h and index ed thr oug h C MOS loc atio n 2Ah (b its <4.
Chapter 4 System Support Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 4-58 This page is intentio n ally b lank.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 5-1 Ch apter 5 INPU T/OUTPU T INTER FACES 5. Chap t er 5 INP UT/OUTPUT INTERFACES 5.1 INTRODUCTION This c hapter de scrib es the standard (i.
Chapter 5 Input/Output Int erfac e s 5-2 Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 5.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 5-3 5.
Chapter 5 Input/Output Int erfac e s 5-4 Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 The c ontents o f the Error regis ter ar e interprete d as a diag nos tic statu s b y te af ter the e xec ution o f a diagno stic c ommand o r whe n th e sy ste m is initialized.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 5-5 Driv e Select/Head Regis ter, I/O Po rt 1F6h/176h Bit Function 7 Res erv ed 6,5 Sector Size: 00 = Res erved 01 = 512 byt es/s ector 10, 11 = Res erved 4 Drive Sel ect: 0 = Driv e 1 1 = Driv e 2 3.
Chapter 5 Input/Output Int erfac e s 5-6 Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 Co mman d Register, I/O Port 1F 7h/177h (Write Only) The ID E co n tr o ller co mman ds are w r itten to th is regis ter.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 5-7 Drive Co ntrol Register, I/O Port 3F6h / 376h (Wri te O nly) Bit Function 7.
Chapter 5 Input/Output Int erfac e s 5-8 Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 5.2.2 IDE CONNECTOR Th i s sy stem uses a stan dar d 40-pi n co nn ecto r fo r IDE dev i ces.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 5-9 5.3 DISK ETTE DRIVE INTERFACE Th e diskette drive inter face s upport s up to tw o diske t te dr i ves , each of which conn ect to a stan da r d 34-pin di skette dri ve c onn ecto r .
Chapter 5 Input/Output Int erfac e s 5-10 Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 5.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 5-11 5.3.1. 2 Diskette Drive Int erface Control The B IOS f unctio n INT 13 p r o v ide s b asic co ntr ol o f the d iskette drive in terfac e.
Chapter 5 Input/Output Int erfac e s 5-12 Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 Main Statu s Register , I/O Port 3F 4h/374h (Read Only) Bit Function 7 Request for Mas ter.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 5-13 5.3.2 DIS K ETTE DRIVE CO NNECTOR Th i s sy stem uses a stan dar d 34-pi n co nn ecto r (r efe r to Figure 5-2 an d T a ble 5-8 f or t h e pinout) f or disk ette drive s.
Chapter 5 Input/Output Int erfac e s 5-14 Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 5.4 SERIAL INTERFACES The se r ial in terfac es tran smit and r ecei ve a syn ch r on ous s er ial data w ith exte r nal dev ice s.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 5-15 5.4.2 S ERIAL INTERFACE PROGRAMM ING 5.4.2. 1 Ser ial I nter face Conf iguration The s erial interf ace s mus t be co n figu red f or a s pe cif ic ad dr ess r an ge (C OM 1, COM 2, e tc.
Chapter 5 Input/Output Int erfac e s 5-16 Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 5.4.2. 2 S e ri a l I n t e rfa c e C o n t ro l The B IOS f unctio n INT 14 p r o v ide s b asic co ntr ol o f the s erial interfac e.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 5-17 Baud R ate Diviso r Latc h Register, I/O Port 3F .
Chapter 5 Input/Output Int erfac e s 5-18 Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 F IF O Co nt ro l Reg ister, I /O Po rt 3F Ah /2FA h (W rite Only) Th i s wri te-on l y r egi st er en ables a n d cl ear s t h e FIFOs a n d sets t h e t r i g ger l evel an d DMA m ode.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 5-19 Line Statu s Register , I/O Port 3F Dh/2FDh (Read Only) This regis ter co ntain s the s tatus o f the cu r rent data tran sf er.
Chapter 5 Input/Output Int erfac e s 5-20 Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 5.5 PARALLEL INTERFACE The parallel inte rfac e pro v ide s c onnec tio n to a pe r ipheral dev ice th at h as a c ompatib le inte rfac e, the mo st co mmon b eing a prin ter.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 5-21 5.
Chapter 5 Input/Output Int erfac e s 5-22 Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 5.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 5-23 5.5.4. 2 Pa ra l l e l I n t e rf a c e C o n t ro l The B IOS f unctio n INT 17 p r o v ide s s implifie d co n tr ol o f the parallel interf ace.
Chapter 5 Input/Output Int erfac e s 5-24 Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 Statu s Register, I/O Port 379h, Read Only This regis ter co ntain s the c urr ent prin ter status .
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 5-25 F IF O Regis ter, I/O P ort 7F8h (ECP Mod e Only) While in ECP/f orw ar d mode , th is lo catio n is use d f o r filling the 16-b y te F IFO w ith data by tes.
Chapter 5 Input/Output Int erfac e s 5-26 Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 5.5.5 PARALLEL INTERFACE CO NNECTO R Figure 5-5 and Table 5-14 show th e co n n ecto r an d pin out o f the parallel inte rface co n necto r .
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 5-27 5.6 K EYBOARD/POINTING DEVICE INTERFACE The ke y bo ard/po in ting de v ice interfac e pro vide s the c onnec tion o f an enhan ce d ke y bo ard an d a mo use u sing PS /2-ty pe co nn ec tio ns.
Chapter 5 Input/Output Int erfac e s 5-28 Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 Co nt r ol o f the data and clo ck s ign als is shared b y the 8042and th e ke y b o ar d depe n din g on th e o r iginato r of th e transf erred data.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 5-29 5.
Chapter 5 Input/Output Int erfac e s 5-30 Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 5.6.3. 2 8042 Control The B IOS f unctio n INT 16 is ty pically use d f o r co ntr olling interac tio n w ith th e ke y bo ar d.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 5-31 Tab le 5-18 lis ts the c o mmands th at can be sent to the 8042 b y th e CP U . Th e 8042 us es IR Q1 f or gaining th e atte ntion o f the CP U .
Chapter 5 Input/Output Int erfac e s 5-32 Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 Table 5-17 . CP U Com m ands T o The 8042 (Continued) Value C ommand Descr iption C0h R ead input port of the 8042.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 5-33 5.6.4 K EYB OARD/POINTING DEVICE INTERFACE CONNECTOR Th er e a r e sepa r a t e con n ect or s for t h e k eybo a r d a n d p oi n t i n g d evi ce.
Chapter 5 Input/Output Int erfac e s 5-34 Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 5.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 5-35 5.7.3 US B CONTROL Th e U SB is co n tr olled thr ough I/ O r egister s as listed in table 5-20. Table 5–20.
Chapter 5 Input/Output Int erfac e s 5-36 Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on – September 1998 This page is intentio n ally b lank.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on–- September1998 6-1 Ch apter 6 AUDIO SUBSYST E M 6. Chapter 6 Audio Subsystem 6.1 INTRODUCTION This c hapter de scrib es the audio sub sy ste m, w h ich fe atures Co mpaq Premie r So und.
Chapter 6 Audio Subsyste m Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 6-2 6.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on–- September1998 6-3 Figu re 6–1.
Chapter 6 Audio Subsyste m Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 6-4 6.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on–- September1998 6-5 6.2.1. 2 DAC Operation The dig ital-to -analog c onv ersio n (DA C) s imply r ev erse s the pro ce dure o f the AD C.
Chapter 6 Audio Subsyste m Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 6-6 6.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on–- September1998 6-7 6.2.2 FM S YNTHES IS AUDIO PROCESSING The audio sub sy ste m supports play bac k o f MID I (.MID ) f iles .
Chapter 6 Audio Subsyste m Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 6-8 6.3 PROGRAMM ING All p rogramming asp ec ts o f the au dio s ubs y ste m relate direc tly to the prog r ammab ility of th e ES1869 co n tr oller, upon which t h e audio s ubs y stem is base d.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on–- September1998 6-9 6.3.2 CONTROL Th e audio sub sy stem is contr olled th r ough I/O mapped r egisters li sted in T able 6-2.
Chapter 6 Audio Subsyste m Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 6-10 The Extende d Mo de regis ters ar e liste d in Table 6-4.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on–- September1998 6-11 6.4 S PECIFICATIO NS Table 6–6. Audio Sub sy stem S pec ific atio ns Table 6-6. Audio Subsystem Specif icat ions Paramemt er Measurement Sampling Rat e 5.
Chapter 6 Audio Subsyste m Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 6-12 This page is intentio n ally b lank.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 7-1 Drives 110/220 VAC Ch apter 7 POWER and SIGNAL DISTRIB UTION 7. Chap t er 7 P OWER SUPPLY AND DISTRI BUTION 7.
Chapter 7 Pow er and Signal Distributi on Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 7-2 7.2.1 POWER SU PPLY ASSEM BLY The po we r supply asse mbly is co n tain ed in a single unit th at fe atur es a se lectab le input v o ltage: 90-132 VAC and 180-264 VAC.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 7-3 7.2.2 POWER CONTROL The po w er supply asse mbly is c ontrolle d digitally by th e PS On sign al (Figure 6-1).
Chapter 7 Pow er and Signal Distributi on Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 7-4 7.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 7-5 7.3 POWER DISTRIBUTION 7.3.1 3. 5/5/12 VDC DISTRIBUTION The po we r supply asse mbly in clude s a multi-co n n ecto r cab le ass emb ly th at r oute s +3.
Chapter 7 Pow er and Signal Distributi on Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 7-6 7.3.2 LO W VO LTAGE DIS TRIB UTION Vo ltage s le ss than 3.3 VD C an d proc es so r co r e v o ltage are p rodu ced th rou gh r egu lato r circu itry on t h e s yst em boa r d .
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 7-7 7.4 SIGNAL DISTRIBUTION Figure 7-4 sho ws general signal distributio n be tw een the main sub asse mblie s of th e sy stem unit.
Chapter 7 Pow er and Signal Distributi on Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 7-8 Pins Function 1,3 Cov er Loc k &.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-1 Ch apter 8 BIOS ROM 8.
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-2 8.2 B OOT/RES ET FUNCTIONS Th e sy stem suppo r ts n ew s ys t em boot fu n ct i on s t o s upport r emote R OM flashin g an d PC97 requireme nts.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-3 8.3 M EM ORY DETECTION AND CO NFIGURATIO N This sy ste m use s the Se r ial Prese n ce Dete ct ( SPD) m et h od of deter m i n i n g t h e i n s talled D IMM co n f iguratio n .
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-4 8.4 DESK TOP M ANAGEM ENT SUPPORT De skto p Manage ment deals with iss ues of se cu rity , identif icatio n , an d sy ste m manageme n t functions.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-5 To suppo r t Window s N T an additional table to the B IOS32 tab le has b een def in ed to co n tain 32- b it pointe rs f o r the D DC and S IT loc ations.
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-6 8.4.1 SYSTEM ID Th e INT 15, AX=E800h BIO S f un ction can be us ed to ident ify th e sy stem bo ar d. T h is function w ill r eturn th e sy ste m ID in the B X regis ter.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-7 Timeout Counter Record ( Video Screensave), SIT R ecord 03h Byte [1] Function Default Value 00h R ecor d ID for V ideo Sc reensav e Timeout 03h 01h No.
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-8 Pro cessor/Memor y/Cache R ecord, S IT Recor d 06h Byte Function Default Value 00h R ecor d ID 06h 01h No.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-9 Peripheral and Input Device Rec ord, SIT Record 07 h Byte Function Default Value 00h R ecor d ID 07h 01h No.
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-10 Memory Module Information Record, SIT Record 08h Byte Function Default Value 00h R ecor d ID 08h 01h No. of Data Bytes in Rec ord 0Dh 02h N o.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-11 Extended Disk Support Record, SIT Reco rd 0Eh Byte Function Default Value 00h R ecor d ID 0Eh 01h No.
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-12 NO TE: [1] D etermined at runtime. DMI System Slots Support Record, SIT Record 16h Byte Function Default Value 00h R ecor d ID 16h 01h No.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-13 8.4.3 EDID RETRIEVE The B IOS f un ctio n INT 15, AX = E813h is a tri-modal c all that r etriev es the VES A e xtended display identific ation data (EDID) .
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-14 8.4.5 S Y S TEM M A P RETRIEVAL The B IOS f unctio n INT 15, AX =E820h will re turn bas e memo r y an d ISA/P CI memo r y co n tiguo us w ith b ase me mory as normal memo ry r an ges .
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-15 8.4.6 FLASH ROM FUNCTIONS Th e sy stem BIO S ma y be upgr aded by flashi n g th e ROM using t h e INT 15, AX=E822h BIOS interfac e, w h ich in cludes the nece ssary sub functio n s.
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-16 8.4.8 ACCES SING CM OS Co nfiguration memo r y data can be retriev ed w ith th e B IOS c all INT 15, AX=E823h.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-17 CX Function Default Value 0000h P CI 2.
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-18 [1] Det ermined at runtime. 8.4.10 S ECURITY FUNCTIONS Th e INT 15 AX=E846h BIOS f un ction i s used to co n tr ol v a r ious s ec uri t y fe a tur es o f th e sy stem.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-19 8.
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-20 8.5.1 SM BIOS In support o f the DMI spe cif icatio n th e P nP fu nctio ns 50h an d 51h ar e us ed to re trieve th e SM BIO S data.
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-21 8.6 POWER M ANAGEM ENT FUNCTIONS Th e BIO S R OM prov i des thr ee ty pes o f po we r ma n agement support: i n depe nden t PM suppo rt ; APM support, a n d ACPI support .
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-22 8.6.3 APM S UPPORT Advanced Pow er Ma n agemen t (APM) BIOS support pr ov i des i n ter a cti on betw een th e BIOS R OM and the o perating sy ste m (OS) .
Techn ical Reference Gu ide Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-23 Standby - Th e c o mputer is in a lo w po we r st.
Chapter 8 BIOS ROM Compaq Deskpro EN Series of Personal Computers Desktop and Minit ow er Form Factors Thi rd Edit i on - September 1998 8-24 8.7 USB LEGACY SUPPORT Th e BIOS ROM c h ecks t h e USB port , d u r i n g POST , for th e pr esen ce of a U SB key bo a r d .
Techn ical Reference Gu ide Compaq Pers onal Compute rs Changed – A pr i l 1998 A-1 Appendi x A ERROR ME SSAGES AND CODE S A. App end ix A ERROR MESS AGES AND CODES A.1 INTRODUCTION This appe n dix lists th e e rr or co de s and a b r ief des criptio n of the pro b ab le c ause of the e r ror.
Appendix A Error Messages and Codes Compaq Pers onal Compute rs Changed - A pril 1998 A-2 A.4 PO WER- ON S ELF TES T ( POST) M ES S A G ES Table A–3.
Techn ical Reference Gu ide Compaq Pers onal Compute rs Changed – A pr i l 1998 A-3 A.5 PROCESSOR ERROR MESSAGES (1x x-x x) Table A–4. Pr ocesso r E r r or Messa g es Table A-4.
Appendix A Error Messages and Codes Compaq Pers onal Compute rs Changed - A pril 1998 A-4 A.6 M EMORY ERROR M ESSAGES ( 2xx-x x) Table A–5. Me mo ry Erro r Me s s age s Table A-5.
Techn ical Reference Gu ide Compaq Pers onal Compute rs Changed – A pr i l 1998 A-5 A.8 P R IN T ER ER RO R M ES S A G E S ( 4 xx- xx) Table A–7. Pri nte r Erro r Me ss age s Table A-7. Printer Error Messages Message Pro bable Cause Message P robabl e Cause 401-01 P rinter failed or not connec ted 402-10 Int errupt tes t and c ontrol reg.
Appendix A Error Messages and Codes Compaq Pers onal Compute rs Changed - A pril 1998 A-6 A.10 DIS K ETTE DRIVE ERROR M ESSA GES ( 6 xx-xx ) Table A–9.
Techn ical Reference Gu ide Compaq Pers onal Compute rs Changed – A pr i l 1998 A-7 A.12 M O DEM COMM UNICATIONS ERROR MES SAGES ( 12xx -xx ) Table A–11.
Appendix A Error Messages and Codes Compaq Pers onal Compute rs Changed - A pril 1998 A-8 A.13 HARD DRIVE ERROR M ESSAGES ( 17xx -xx ) Table A–12. H ard D riv e E rro r M e ss ag e s Table A-12 . Hard Drive Error Messages Message Pro bable Cause Message Pr obable Cau se 17xx -01 Ex c eeded max.
Techn ical Reference Gu ide Compaq Pers onal Compute rs Changed – A pr i l 1998 A-9 A.14 HARD DRIVE ERROR M ESSAGES ( 19xx -xx ) Table A–13. H ard D riv e E rro r M e ss ag e s Table A-13 .
Appendix A Error Messages and Codes Compaq Pers onal Compute rs Changed - A pril 1998 A-10 A.16 AUDIO ERROR MESSAGES (3206-xx ) Table A–15. Aud i o Er r or Messag es Table A-15 . Audio Error Message Message P robab le Cause 3206-x x Audio sub syste m in ter na l e r ror A.
Techn ical Reference Gu ide Compaq Pers onal Compute rs Changed – A pr i l 1998 A-11 A.18 S C S I I N TE RF A C E E R R O R M E S S A G E S ( 6 5 xx- xx, 6 6 xx- xx, 6 7 xx- xx) Table A–17.
Appendix A Error Messages and Codes Compaq Pers onal Compute rs Changed - A pril 1998 A-12 A.20 CEM M PRIVILEDGED OPS ERROR MES SAGES Table A–19. CE MM Pr i vil eged Ops E r r or Messa g es Table A-19 .
Techn ical Reference Gu ide Compaq Pers onal Compute rs Ori ginal - July 1996 B-1 Appendi x B ASCII CHARACTE R SE T B. Appendi x B ASCII CHARACTER SET B.1 INTRODUCTI ON This appendix lists , in Table B -1, th e 256-c ha r a cter AS CII co de s et including the dec imal an d hexadec imal value s.
Appendix B ASCII Character Set Compaq Pers onal Compute rs Ori ginal - July 1996 B-2 Table B-1. ASCII Code S et (Continued) Dec Hex Symbol Dec H ex Symbol Dec Hex Symbol Dec Hex Symbol 128 80 Ç 160 A.
Techn ical Reference Gu ide Compaq Pers onal Compute rs Change –- A pril 1998 C-1 Appendi x C KEYB OARD C. App end ix C K EYB OARD C.1 INTRODUCTION This appe n dix de scrib es the Comp aq ke y bo ard th at is includ ed as standard w ith th e sy ste m unit.
Appendix C Ke yboard Compaq Pers onal Compute rs Changed - A pril 1998 C-2 Key board Interface (Syst em U ni t) Data / CLK C.2 K EYSTRO K E PROCES S ING A f unctiona l bloc k di agr am of t h e key str oke proc essing element s is show n in Figur e C-1.
Techn ical Reference Gu ide Compaq Pers onal Compute rs Change –- A pril 1998 C-3 C.2. 1 TRANSMIS S IONS TO THE S YS TEM The ke y bo ard proc es so r se nds tw o main ty pes o f data to the sy ste m; co mman ds (o r r es po nses to sy ste m co mman ds) and ke y strok e s can co des .
Appendix C Ke yboard Compaq Pers onal Compute rs Changed - A pril 1998 C-4 C.2. 2 KEYB OARD LAYOUTS C.2. 2.1 Standar d Enhanced Keyboar ds Figu re C–3.
Techn ical Reference Gu ide Compaq Pers onal Compute rs Change –- A pril 1998 C-5 C.2. 2.2 Windows Enhanc ed Keyboards Figu re C–5. U.S. English Win dow s (101W -Ke y ) Ke y bo ar d Key Pos itions Figu re C–6.
Appendix C Ke yboard Compaq Pers onal Compute rs Changed - A pril 1998 C-6 C.2. 3 KE YS All key s generat e a make co de (w h en pr esse d) a n d a break co de (w h en r elease d) w ith th e excep t i on of th e Pause key (pos. 16), w h i ch pr oduc es a make c ode onl y .
Techn ical Reference Gu ide Compaq Pers onal Compute rs Change –- A pril 1998 C-7 C.2. 3.2 Multi-K eystr oke F unctions Shift - The Shift key (pos. 75/86), w h en h eld dow n , pr oduc es a shift s tate (uppe r case ) f or key s in positio n s 17-29, 30, 39-51, 60-70, an d 76-85 as long as the Cap s Lo ck key (pos.
Appendix C Ke yboard Compaq Pers onal Compute rs Changed - A pril 1998 C-8 C.2. 3.3 Windows Keystrok es Windo w s-enh an ce d key bo ar ds include thr ee additio nal key pos itio ns.
Techn ical Reference Gu ide Compaq Pers onal Compute rs Change –- A pril 1998 C-9 C.2. 4 KEYB OARD COM M ANDS Tab le C-1 lis ts th e co mman ds that th e ke y bo ar d can se nd to the s y ste m (spe cif ically , to the 8042- ty pe logic). Table C–1.
Appendix C Ke yboard Compaq Pers onal Compute rs Changed - A pril 1998 C-10 Table C–2. Key bo ar d Scan Codes Table C-2. Keyboard S c an Codes Key Pos.
Techn ical Reference Gu ide Compaq Pers onal Compute rs Change –- A pril 1998 C-11 Table C-2 . Keyboard S c an Codes (Continued) Key Pos Legend Mode 1 Mode 2 Mode 3 41 W 11/91 1D /F0 1D 1D/F0 1D 42 .
Appendix C Ke yboard Compaq Pers onal Compute rs Changed - A pril 1998 C-12 Table C-2 . Keyboard S c an Codes (Continued) Key Pos. Legend Mode 1 Mode 2 Mode 3 81 N 31/B 1 31/F0 31 31/F0 31 82 M 32/ B2 3A/F0 3A 3A/F0 3A 83 , 33/B3 41/F0 41 41/F0 41 84 .
Techn ical Reference Gu ide Compaq Pers onal Compute rs Changed - June 1998 D-1 Appendi x D CO MPAQ 10/100 TX PCI IN TEL W OL U TP CON TROLLER CARD D. Appendix D Com paq 10/100 TX PCI Intel WOL UTP Contr oll er Car d D.1 INTRODUCTION Th i s appen dix describes t h e Co mpaq 10/100 T X PCI In tel WOL U TP Contr oller car d (# 323550- 001).
Appendix D Compaq 10/100 T X PCI Intel W OL U TP Controller Card Compaq Pers onal Compute rs Changed - June 1998 D-2 D.2 FUNCTIONAL DESCRIPTION The Co mpaq 10/100 TX PCI Intel W OL U TP Co ntr olle r .
Techn ical Reference Gu ide Compaq Pers onal Compute rs Changed - June 1998 D-3 TX Data TX/RX Filters D.2. 2 CARD POWER AND CLOCK Th e cont r oll er ca r d in clu d es on - boa r d p ower l ogi c th at r ecei ves + 5 V DC power fr om t h e PC I con n ect or or t h e WOL h ea der .
Appendix D Compaq 10/100 T X PCI Intel W OL U TP Controller Card Compaq Pers onal Compute rs Changed - June 1998 D-4 D.2. 4 POWER MANAGEM ENT SUPPORT Th e co n tr oller car d pr ov i des sy st em wake up using n etwo r k eve n ts a n d supports both APM a n d ACP I po we r man age ment e nviro nments.
Techn ical Reference Gu ide Compaq Pers onal Compute rs Changed - June 1998 D-5 D.3 CONFIGURATION/CONTROL The 82558 co n tr olle r is a PCI dev ice an d co n figured tho ugh PCI co n figuration spac e registe rs using PCI pr oto col de scribe d in ch a pt er 4.
Appendix D Compaq 10/100 T X PCI Intel W OL U TP Controller Card Compaq Pers onal Compute rs Changed - June 1998 D-6 This page is intentio n ally b lank.
Techn ical Reference Gu ide Compaq Pers onal Compute rs Ori ginal - Apri l 1998 E-1 Appendi x E WIDE ULT RA SCSI HOST ADAP T ER E. Appendix E Wide Ultr a SCSI Hos t Adapter E.
Appendix E Wide Ultra SCSI Host Adapte r Card Compaq Pers onal Compute rs Ori ginal – April 1998 E-2 E.2 FUNCTIONAL DESCRIP TION A b lo ck diagram o f the W ide U ltr a SCSI Card is s h ow n in Figure E- 2. Th e c ard’s arc hitec ture is base d on t h e AIC-7880 S CSI co n t r oller.
Techn ical Reference Gu ide Compaq Pers onal Compute rs Ori ginal - Apri l 1998 E-3 E.3 SCSI ADAPTER PROGRAMMING E.3.1 SC SI ADAPTER CONFIGURATION Th e Adaptec A H A-2940U SCSI Adapter Ca r d is a PCI dev i ce and configured using PCI pr oto col and PCI C onfig uration Sp ace re giste r s (P CI add ress es 0 0h-FF h) as dis cu ss ed in Chapter 4.
Appendix E Wide Ultra SCSI Host Adapte r Card Compaq Pers onal Compute rs Ori ginal – April 1998 E-4 E.5 USER GUIDELINES Th e adapt er car d fo llow s stan dar d SCSI guidelines in supportin g up to SCSI de vice s using SCSI identif icatio n n umbe rs 0-6 (ID #7 is res erve d f o r th e adapte r card).
Techn ical Reference Gu ide Compaq Pers onal Compute rs Ori ginal - Apri l 1998 E-5 E.6 SCSI CONNECTORS Figu re E–3. Ultra SCSI Co n nector (50-pin , a s see n from rear of car d) Table E–4.
Appendix E Wide Ultra SCSI Host Adapte r Card Compaq Pers onal Compute rs Ori ginal – April 1998 E-6 Figu re E–4. Wide Ultra SCS I Conn ecto r (68-pi n , a s see n from top o f card) Table E–5.
Techn ical Reference Gu ide Compaq Pers onal Compute rs Ori ginal - Apri l 1998 F-1 Appendi x F ATI RAGE P RO AGP GRAP HICS CARDS F. Appendix F ATI RAGE PRO AGP 1X/2X Gr aphics Cards F. 1 INTRODUCTION Th i s a p pen di x d escr i bes ATI RAGE PRO AGP Gra p h i cs Ca r d s used i n some m odels.
Appen dix F ATI RAGE P RO AGP Gra phics Ca rd s Compaq Pers onal Compute rs Ori ginal - Apri l 1998 F-2 64-Bit G raphic s Mem ory Bus RGB Data , Hsyn c, Vsync Monitor Multimedia Data F. 2 FUNCTIONAL DESCRIPTI ON Th e ATI RAGE PRO AGP Gr a p h i cs Ca r d s a r e based on t h e ATI RAGE PRO cont r oll er .
Techn ical Reference Gu ide Compaq Pers onal Compute rs Ori ginal - Apri l 1998 F-3 VESA Connec tor HSync Gr aphics Data Displ ay Monitor Red Gr een Blue F.
Appen dix F ATI RAGE P RO AGP Gra phics Ca rd s Compaq Pers onal Compute rs Ori ginal - Apri l 1998 F-4 F. 3 DISPLAY MODES Th e gra ph i cs modes suppo r ted by th e ATI RAGE PRO AGP1X/2X card with th e stan dar d four megab y tes are lis ted in Table s F -1 and F-2.
Techn ical Reference Gu ide Compaq Pers onal Compute rs Ori ginal - Apri l 1998 F-5 F. 4 PROGRAMM ING F.4.1 CONFIGURATION Th e gr ap h i cs car d wo r k s off th e AGP bus an d i s con fig u r ed t h r ough PCI con figu r ation sp ace r egist er s usi n g PCI pr otoco l.
Appen dix F ATI RAGE P RO AGP Gra phics Ca rd s Compaq Pers onal Compute rs Ori ginal - Apri l 1998 F-6 F. 5 MO NITOR POWER M ANAGEM ENT CONTROL This co ntr olle r prov ide s mo n itor po w er c o ntr ol f or mo nitors that co nfo r m to the VES A dis play po we r man ageme n t signalin g ( DPMS) pr otoco l.
Techn ical Reference Gu ide Compaq Pers onal Compute rs Ori ginal - Apri l 1998 F-7 F.6.2 M O NITOR CONNECTOR Fig ure F– 4 . VGA Mon i tor C on n ector , (Fe male D B-15, as v iew ed f r om rear). Table F–6. DB -15 Mo ni t or Conn ec tor Pin out Table F-6.
Appen dix F ATI RAGE P RO AGP Gra phics Ca rd s Compaq Pers onal Compute rs Ori ginal - Apri l 1998 F-8 F.6.3 ATI M ULTIM EDIA CHANNEL CONNECTOR The ATI Multime dia Ch an n el (AM C) is prov ided thr .
INDEX I. 3D effect s, F- 2 87307 I/O co n tr oller, 4-49 ab brev iatio ns, 1-3 Acceler a t ed Gr a p h i cs Por t ( AGP) , 4-11 ACPI, D- 4 ac ro ny ms , 1 -3 admin istr ator pa ssw ord, 4-52, 4-53 AGP.
gra ph ics sub sy stem, 2-14 gra ph ics, 3D, F-2 guidelin es, SCSI use r , E-4 ha r d dr i ve s pin dow n , 4-57 heat sin k (proce sso r ), 2-12, 3-5 H ost bus , 2-10 I/O co n tr oller (87307), 4-49 I.
sy stem ID, 8-6 sy ste m in fo r mation tab le (S IT), 8- 6 sy stem man a gement , 4-51 sy stem memo ry, 2-13, 3-6 sy stem R OM, 2-13, 8-1 tempur at ur e se n sor, 4-54 thermal co nside rations, 3 -5 .
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Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Compaq EN Series è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Compaq EN Series - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Compaq EN Series imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Compaq EN Series ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Compaq EN Series, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Compaq EN Series.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Compaq EN Series. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Compaq EN Series insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
