IBM PC CONVERTIBLE

Diskette Interrupt Entry (DSKT _INT)
; *************************************
DISKETTE INTERRUPT ENTRY ADDRESS
; *************************************
;ORG OEF57H
OF57 ORG 00F57H
= OF57
DSKLINT EQU
OF57 E9 0000 JMP DSKLI NTE
Diskette Drive Parameters
OF5A
OF5A
FOOO
OF5C OFC7 R
OF5E 2709
OF60 0100
OF62
OF62
FOOO
OF64 OFC7 R
OF66 4F09
OF68 0100
OFCl
. *****************************************************************
~ DISKETTE DRIVE TYPE PARAMETERS (FOR READ DRIVE PARAMETERS CALL)
; *****************************************************************
TWO SIDED 5 1/4" DRIVE PARMS
PARMS_TPI48 LABEL BYTE
OW OFOOOH
OW OFFSET DSKLBASE
OW 2709H
OW 0100H
TWO SIDED 3 1/2" DRIVE PARMS
PARMS_TPIl35 LABEL BYTE
OW OFOOOH
OW OFFSET DSKLBASE
OW 4F09H
OW 0100H
; *********************************
; DISKETTE PARAMETER TABLE
; *********************************
;ORG OEFC7H
ORG 00FC7H
POINTER TO DRIVE PARMS (SEG)
POINTER TO DRIVE PARMS (OFF)
MAX TRK #/S IDE,SECTOR/TRACK
MAX HEAD #, FILL
POINTER TO DRIVE PARMS (SEG)
POINTER TO DRIVE PARMS (OFF)
MAX TRK #/SIDE,SECTOR/TRACK
MAX HEAD #, FI LL
Diskette Timing Parameters
(DSKT _BASE)
OFC7
OFC7
DO
OFC8 02
OFC9 25
OFCA 02
OFCB 09
OFCC 2A
DSKLBASE
THIS IS THE SET OF PARAMETERS REQUIRED FOR
DISKETTE OPERATION. THEY ARE POINTED AT BY THE
DATA VARIABLE DISLPOINTER. TO MODIFY THE PARAMETERS,
BUILD ANOTHER PARAMETER BLOCK AND POINT AT IT
**************************************************
DSKLBASE
DB
DB
DB
DB
DB
DB
LABEL
11010000B
2
MOTOR_WAIT
2
9
02AH
BYTE
SRT=D, HD UNLD=OO - 1ST
HD LOAD=I, MODE=DMA - 2ND
WAIT AFTER OPN TIL MOTOR OFF
512 BYTES/SECTOR
EDT ( LAST SECTOR ON TRACK)
GAP LENGTH
ROM BIOS 2-229