IBM 5170 Technical Reference page 246

0020 BAD CNTLR EQU 20H CONTROLLER HAS FA I LED
0011 DATA CORRECTED EQU 11H
ECC CORRECTED DATA ERROR
0010 BAD3:cc EQU 10H BAD ECC ON 0 I SK READ
0006 BAD TRACK EQU OBH NOT IMPLEMENTED
OOOA BAD-SECTOR EQU
OAH
BAD SECTOR FLAG DETECTED
0009
DMA-SOUNDARY EQU
09H
DATA EXTENDS TOO FAR
0007 INIT FAIL EQU 07H
DRIVE PARAMETER ACTIVITY FAILED
0005 BAD_RESET EQU 05H
RESET FAI LED
0004 RECORO_NOTJND EQU 04H REQUESTED SECTOR NOT FOUND
0002 BAD_AD DR_MARK EQu 02H
ADDRESS MARK NOT FOUND
0001 BAD CMD EQU 01H
BAD COMMAND PASSED TO 0 I SK I/O
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F' XED 0 I SK PARAMETER TABLE
- THE TABLE IS COMPOSED OF A BLOCK DEFINED AS:
+0
(1
WORD) - MAX I MUM NUMBER OF CYL I NDERS
+2 (1
BYT
E) - MAX I MUM NUMBER OF HEADS
+3 (1 WORD) - NOT USED/SEE PC-XT
+5 (1 WORD) - STARTING WRITE PRECOMPENSATION CYL
+7
(1
BYTE) - MAXIMUM ECC DATA BURST LENGTH
+8 (1 BYTE) - CONTROL BYTE
BIT
7
DISABLE RETRIES -OR ­
BIT 6 DISABLE RETRIES
BIT 3 MORE THAN 8 HEADS
+9 (3 BYTES)- NOT USED/SEE PC-XT
+12 (1 WORD) - LANDING ZONE
+14 (1 BYTE) - NUMBER OF SECTORS/TRACK
+15 (1 BYTE) - RESERVED FOR FUTURE USE
- TO DYNAMICAllY DEFINE A SET OF PARAMETERS
BU I LD A TABLE FOR UP TO 15 TYPES AND PLACE
THE CORRESPOND I NG VECTOR I NTO I NTERRU PT 41
FOR DR I VE 0 AND INTERRUPT 46 FOR DR I VE 1.
,
. . .
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I NCLUDE SEGMENT. SRC
0000 CODE SEGMENT BYTE PUBLI C
HARDWARE SPECIFIC VALUES
- CONTROLLER I/O PORT
> WHEN READ FROM:
HF_PORT+O - READ DATA (FROM CONTROLLER TO CPU)
HF _PORT+1 - GET ERROR REG I STER
HF_PORT+2 - GET SECTOR COUNT
HF_PORT+3 - GET SECTOR NUMBER
HF_PORT+4 - GET CYLINDER LOW
HF_PORT+5 - GET CYLINDER HIGH (2 BITS)
HF PORT+6 - GET SIZE/DRIVE/HEAD
HF-PORT+7 - GET STATUS REGISTER
> WHEN WRITTEN TO;
HF_PORT+O - WRITE DATA (FROM CPU TO CONTROLLER)
HF PORT+1 - SET PRECOMPENSATION CYLINDER
HF-PORT+2 - SET SECTOR COUNT
lIF-PORT+3 - SET SECTOR NUMBER
HCPORT+4 - SET CYLI NDER LOW
HF_PORT+5 - SET CYLINDER HIGH (2 BITS)
HF_PORT+6 - SET SIZE/DRIVE/HEAD
HF_PORT+7 - SET COMMAND REGISTER
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=
01 FO HF PORT
EQU 01 FOH
; DISK PORT
"" 03F6
HCREG_PORT EQU 3F6H
, STATUS REGISTER
=
0001 ST ERROR EQU 00000001
B
=
0002 ST-I NOEX EQU 0000001 DB
= 0004 SCCORRCTD EQU 00000100B ECC CORRECT I ON SUCCESSfUL
=
0008
ST_DRQ EQU 00001000B
= 0010 ST_SEEK_COMPl EQU 000100008 SEEK COMPLETE
= 0020 ST_WRT_FlT EQU 00100000B WRITE FAULT
= 0040 ST_READY EQU 01000000B
=
0080 ST_BUSY EQU 10000000B
ERR_DAM ERROR
RE~~~TER
= 0002 ERR_ TRK_O EQU 00000010B TRACK
0
NOT FOUND ON RECAL
0004 ERR_ABORT EQU 00000100B ABORTED COMMAND
EQU 00001000B NOT USED
=
0010 EQU 00010000B 10 NOT FOUND
00100000B NOT USED
=
0040
ERR DATA ECC
~g~
01000000B
=
0080 ERR:BAD_BLOCK EQU 100000006
'" 0001 00000001B DATA ADDRESS MARK NOT FOUND
=
0010 RECAl_CMD EQU 00010000B
DRIVE RECAL (10H)
=
0020 READ_CMD EQU 00100000B
READ (20H)
=
0030 WR I
TE
CMD EQU 001100006 WRITE (30H)
=
0040 VER' FY CMO EQU 01000000B VERIFY (40H)
=
0050
FMTTRK-CMO EQU 01010000B FORMT TRACK (SOH)
=
0060 I NIT CMD EQU 01100000B
INITIALIZE (60H)
=
0070
SEEK-CMO EQU
01110000B
SEEK (70H)
=
0090
01
AG=CMD EQU 10010000B DIAGNOSTIC (90H)
=
0091 SET PARM CMD EQU 10010001B
DRIVE PARMS (91H)
=
0001 NO RETR I ES
EQU
000000016 CMD MODIFIER (OlH)
'" 0002
ECC_MODE EQU 00000010B CMD MODIFIER (02H)
=
0008
BUffER_MODE EQU
000010006
CMD MOO I F I ER (08H)
=
OOAO
I NT CTl PORT EQU
OAOH
8259 CONTROL PORT #2
=
0020
I NTT CTt: PORT EQU
020H
8259 CONTROL PORT #1
=
0020
EO I - - EQU
20H END OF INTERRUPT COMMAND
=
0002 MAX FILE EQU
=
0002
S_MAx_F I LE
EQU
= 0020 DELAY 1 EQU 20H
DELAY FOR or COMPLETE
=
0600
DELAY-2
EQU 0600H
DELAY FOR READY
=
0100 DELAY=3 EQU 0100H
DELAY FOR DATA REQUEST
'" 0008
HF_FAIL EQU 06H CMOS FLAG I N BYTE OEH
TO INHIBIT DISK IPL
EXTRN P _MSG: NEAR
ASSUME CS:CODE
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FIXED DISK I/O SETUP
5-104 Disk