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COMPAQ DeskPro 386 Reference Manuals |
/pubs/pc/reference/compaq/deskpro386/ |
So far, I've found only the first volume of the COMPAQ DeskPro 386/25 Technical Reference Guide:
The table of contents in Volume I gives us a taste of what's in Volume II:
- Chapter 5 KEYBOARD
- Chapter 6 POWER SUPPLY
- Chapter 7 MULTIPURPOSE FIXED DISK DRIVE CONTROLLER BOARDS
- Chapter 8 DISKETTE DRIVES
- Chapter 9 FIXED DISK DRIVE SYSTEMS
- Chapter 10 FIXED DISK DRIVE BACKUP SYSTEMS
- Chapter 11 VIDEO DISPLAY CONTROLLER BOARDS
- Chapter 12 MONITORS
- Chapter 13 ASYNCHRONOUS COMMUNICATIONS/PARALLEL PRINTER BOARD
- Chapter 14 COMPAQ 300-/600-MEGABYTE FIXED DISK DRIVE EXPANSION UNIT
- Appendix A INTERNATIONAL KEYBOARDS
- Appendix B ERROR MESSAGES
NOTE: As the page on COMPAQ DeskPro 386 ROMs explains, 5 COMPAQ engineers had their initials "engraved" in the original DeskPro 386 ROM. In June 2018, I was fortunate enough to meet 4 of them, and they were all kind enough to sign my copy of the DeskPro 386 Technical Reference Guide. This "signature page", shown below, has since been added to the PDF above.
The following table comes from pages 4-189 and 4-190 of the DeskPro 386/25 Technical Reference Guide (Volume I).
Landing
Pre-comp. Zone
Drive Max. Cylinder Cylinder Sectors/ Capacity Same as
Type Cylinders Heads (note 1) (note 2) Track (MB) IBM PC AT
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1 (note 3) 306 4 128 305 17 10.65 yes
2 (note 3) 615 4 128 638 17 21.41 yes
3 615 6 128 615 17 32.12 yes
4 1024 8 512 1023 17 71.30
5 940 6 512 939 17 49.09 yes
6 (note 3) 697 5 128 696 17 30.33
7 462 8 256 511 17 32.17 yes
8 925 5 128 924 17 40.26
9 900 15 -1 899 17 117.50 yes
10 980 5 -1 980 17 42.65
11 925 7 128 924 17 56.36
12 (note 3) 925 9 128 924 17 72.46
13 612 8 256 611 17 42.61
14 980 4 128 980 17 34.12
15 Reserved - Not for use by end-users
16 612 4 0 612 17 21.31
17 980 5 128 980 17 42.65
18 966 6 128 966 17 50.45
19 1023 8 -1 1023 17 71.23
20 733 5 256 732 17 31.90
21 733 7 256 732 17 44.66
22 524 4 -1 524 40 42.93
23 924 8 -1 924 17 64.34
24 966 14 -1 966 17 117.71
25 (note 3) 966 16 -1 966 17 134.53
26 1023 14 -1 1023 17 124.66
27 832 6 -1 832 33 84.34
28 1222 15 -1 1222 34 319.09
29 1240 7 -1 1240 34 151.10
30 615 4 128 615 25 31.49
31 615 8 128 615 25 62.98
32 905 9 128 905 25 104.26
33 (note 3) 832 8 -1 832 33 112.46
34 966 7 -1 966 34 117.71
35 (note 3) 966 8 -1 966 34 134.53
36 966 9 -1 966 34 151.35
37 966 5 -1 966 34 84.08
38 (note 3) 611 16 -1 611 63 315.33
39 1023 11 -1 1023 33 190.13
40 1023 15 -1 1023 34 267.13
41 1630 15 -1 1630 52 650.96
42 1023 16 -1 1023 63 527.97
43 805 4 -1 805 26 42.86
44 805 2 -1 805 26 21.43
45 (note 3) 748 8 -1 748 33 101.11
46 748 6 -1 748 33 75.83
47 (note 3) 966 5 128 966 25 61.82
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NOTES: 1. A value of -1 means that no write precompensation is used.
2. These values are not used by the COMPAQ DESKPRO 386/25 system, which
automatically retracts and locks the heads in a non-data landing zone
at power-down.
3. Drive types supported by Compaq.
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