Path: utzoo!mnetor!tmsoft!dptcdc!jarvis.csri.toronto.edu!rutgers!iuvax!bobmon
From: bobmon@iuvax.cs.indiana.edu (RAMontante)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Hard drive/Controller
Summary: Longish listing of code to look for.
Message-ID: <21916@iuvax.cs.indiana.edu>
Date: 10 Jun 89 14:23:44 GMT
References: <14348@watdragon.waterloo.edu>
Reply-To: bobmon@iuvax.cs.indiana.edu (RAMontante)
Organization: malkaryotic
Lines: 112

mdharding@dahlia.waterloo.edu (Matthew D. Harding) :
-
-But it is still not answered!!! Nearly everyone suggested that it is probably
-not low-level formatted, and suggested using debug and the command g=c800:5
-to intiate the ROM program. However, this hangs my machine big time, generating
-1) Divide overflow, or 2)clear screen and hang, or 3) cold reboot, or any combo
-of the above. Many people suggested that I should do this if my controller is
-Western Digital. I'm guessing it's not, but how can I be sure? There are no
-	[ ... ]
-correct debug command)? Am I neck-deep in sh*t for the rest of my life?

Well, I can't speak to your last question :-) but here is something that
may be small helpful.  It's a dump of the ROM on my HD controller.  I have
an Adaptec 2070A controller, and its ROM starts at a slightly different
location than you cited for WD.  (namely c800:ccc) I don't know if there's
information in front of that or not (forgot to look), but this is what the
beginning of my ROM's executable looks like.  You might be able to find
something similar in the c800:somewhere address space...

Following is a hex display of the first few bytes of the code (from
Buerg's excellent LIST utility).  Then an unassembly from DEBUG, showing
the instructions and with the initial text string commented in for
clarity's sake.  Note that the Adaptec program starts with a jump around
their copyright notice, to the "real" start of the routine.  If other
mfr's do this as well, the start will be easier to find.  Otherwise, if
you're good enough with assembler you can look for code that does similar
things.  Hope this helps.

	________________________________


LIST       1             06-10-89 07:20  HDFMT

000000  EB 25 90 28 63 29 20 63-6F 70 79 72 69 67 68 74  .%.(c) copyright
000010  2C 20 41 64 61 70 74 65-63 20 49 6E 63 2E 20 31  , Adaptec Inc. 1
000020  39 38 34 20 30 34 20 8C-C8 8E D8 8E C0 BC 00 30  984 04 ........0
000030  BD 00 20 B9 42 00 BE 00-00 B0 00 88 02 46 E2 FB  .. .B........F..
000040  C6 46 0E 00 C6 46 26 02-BA 00 1C E8 AC 0C E8 BC  .F...F&.........
000050  08 BA 80 00 B9 01 00 B4-00 CD 13 BA 80 00 B9 01  ................
000060  00 B4 11 CD 13 BA 81 00-B9 01 00 B4 11 CD 13 BA  ................
000070  4D 09 E8 4D 0C 72 F8 3D-03 00 72 F3 3D 09 00 77  M..M.r.=..r.=..w


C:\TMP debug
-
-uc800:ccc

C800:0CCC EB25          JMP     0CF3
C800:0CCE 90            NOP

    --(c) copyright, Adaptec Inc. 1984 04 --	delimiting dashes
						are mine -- bob, mon.
C800:0CF3 8CC8          MOV     AX,CS
C800:0CF5 8ED8          MOV     DS,AX
C800:0CF7 8EC0          MOV     ES,AX
C800:0CF9 BC0030        MOV     SP,3000
C800:0CFC BD0020        MOV     BP,2000
C800:0CFF B94200        MOV     CX,0042
C800:0D02 BE0000        MOV     SI,0000
C800:0D05 B000          MOV     AL,00
C800:0D07 8802          MOV     [BP+SI],AL
C800:0D09 46            INC     SI
C800:0D0A E2FB          LOOP    0D07
C800:0D0C C6460E00      MOV     BYTE PTR [BP+0E],00
C800:0D10 C6462602      MOV     BYTE PTR [BP+26],02
C800:0D14 BA001C        MOV     DX,1C00
C800:0D17 E8AC0C        CALL    19C6
C800:0D1A E8BC08        CALL    15D9
C800:0D1D BA8000        MOV     DX,0080
C800:0D20 B90100        MOV     CX,0001
C800:0D23 B400          MOV     AH,00
C800:0D25 CD13          INT     13
C800:0D27 BA8000        MOV     DX,0080
C800:0D2A B90100        MOV     CX,0001
C800:0D2D B411          MOV     AH,11
C800:0D2F CD13          INT     13
C800:0D31 BA8100        MOV     DX,0081
C800:0D34 B90100        MOV     CX,0001
C800:0D37 B411          MOV     AH,11
C800:0D39 CD13          INT     13
C800:0D3B BA4D09        MOV     DX,094D
C800:0D3E E84D0C        CALL    198E
C800:0D41 72F8          JB      0D3B
C800:0D43 3D0300        CMP     AX,0003
C800:0D46 72F3          JB      0D3B
C800:0D48 3D0900        CMP     AX,0009
C800:0D4B 77EE          JA      0D3B
C800:0D4D 884610        MOV     [BP+10],AL
C800:0D50 BA3609        MOV     DX,0936
C800:0D53 E8250C        CALL    197B
C800:0D56 2C30          SUB     AL,30
C800:0D58 72F6          JB      0D50
C800:0D5A 3C01          CMP     AL,01
C800:0D5C 77F2          JA      0D50
C800:0D5E 0C80          OR      AL,80
C800:0D60 8AD0          MOV     DL,AL
C800:0D62 88460F        MOV     [BP+0F],AL
C800:0D65 B84000        MOV     AX,0040
C800:0D68 8ED8          MOV     DS,AX
C800:0D6A D2E2          SHL     DL,CL
C800:0D6C 88164300      MOV     [0043],DL
C800:0D70 8CC8          MOV     AX,CS
C800:0D72 8ED8          MOV     DS,AX
C800:0D74 BA7009        MOV     DX,0970
C800:0D77 E8010C        CALL    197B
C800:0D7A 3C4E          CMP     AL,4E
C800:0D7C 7456          JZ      0DD4
C800:0D7E 3C59          CMP     AL,59
C800:0D80 75F2          JNZ     0D74
C800:0D82 E8EB0B        CALL    1970

	etc...