IBM PC CONVERTIBLE

05B6 26: C7 06 0078 R 0000 E
MOV WORD PTR DISK-POINTER, OFFSET DSKLBASE
05BD 26: 8C DE 007A R MOV
WORD PTR DISK-POINTER+2,CS
CLEAR THE BOOT LOCATION (256 WORDS)
05C2 B9 0100
05C5 BF 7COO R
05C8 2B CO
05CA F3/ AB
MOV
MOV
SUB
REP
CX,256
DI,OFFSET
BOOLLOCN
AX,AX
STOSW
LOAD SYSTEM FROM DISKETTE
05CC B9 0002
05CF
05CF
51
05DO
05DO
B4 00
05D2 CD 13
05D4 73 06
05D6 59
05D7 E2 F6
05D9 EB 7C 90
05DC
05DC
B8 0201
05DF 2B D2
05El BB 7COO R
05E4 B9 0001
05E7 CD 13
05E9 59
05EA 72 03
05EC EB 76 90
05EF
05EF
B4 16
05F1 CD 13
05F3 F6 C4 80
05F6 75 05
05F8 E2 D5
05FA E9 068C R
05FD
05FD F6 06 0016 R 10
0602 74 03
0604 EB 51 90
MOV
HO:
HI:
PUSH
MOV
INT
JNC
POP
LOOP
JMP
HL1:
MOV
SUB
MOV
MOV
INT
POP
JC
JMP
HL2:
MOV
INT
TEST
JNZ
LOOP
JMP
HL3:
TEST
JZ
JMP
SHOW DISKETTE
0607
0607
80 26 0016 R EF
OGOC
060C BA 1200
060
F 8D 0000 E
0612 E8 06BE R
0615
0615
BA OllF
0618 BD 0000 E
061B E8 06BE R
061E BA OE21
0621 BD 0000 E
0624 E8 06BE R
0627
0627
B3 05
0629 E8 06C4 R
HL1:
H3:
AND
MOV
MOV
CALL
H3_1 :
MOV
MOV
CALL
MOV
MOV
CALL
H3_2:
MOV
CALL
CX,2
CX
AH,O
13H
HL1
CX
HO
HBASI C
RETRY COUNTER
RESET THE DISKETTE SYSTEM
DISKETTE_IO
I F ERROR, TRY AGAIN
IF RETRY EXCEEDS TWO THEN BASIC
AX,201H READ IN THE SINGLE SECTOR
DX,DX TO THE BOOT LOCATION
BX,OFFSET BOOLLOCN
CX ,I
13H
CX
HL2
H4
AH ,16H
13H
AH, TIMeOUT
HL3
HO
H10
DRIVE 0, HEAD 0
SECTOR I, TRACK 0
DISKETTE_IO
GET RETRY COUNT
GO CHECK BOOT IF READ OKAY
CHECK FOR NO MEDIA IN DRIVE BY
CHECKING CHANGE LINE
CHECK FOR NO MEDIA IN DRIVE
IF NO MEDIA THEN SHOW ICON
ELSE GO RETRY ERROR
RETRY EXCEEDED GO SHOW BAD DISKETTE
BIOS_STATUS,BOOLF1HIT ; DID THE USER INDICATE BASIC OPTIOI
HL1 ; JUMP I F NOT
HBASIC ; EXIT TO BASIC
BIOS_STATUS,NOT BOOLFlHIT ; RESET Fl KEY HIT FLAG
DX ,1200H
BP,OFFSET FLICON
DSPLICON
DX POINTS TO DISPLAY POSITION
POINT THE Fl I CON
DX,OllFH ; DX POINTS TO DISPLAY POSITION
BP ,OFFSET SYS_DSKLICON ; POINT TO THE DISKETTE ICON
DSPLICON
DX,OE21H DX POINTS TO DISPLAY POSITION
BP ,OFFSET DSKLICON POINT TO THE DISKETTE ICON
DSPLICON
BL,05
KELWAIT
SET TIMEOUT TO 275 MSECS
WAIT FOR Fl KEY OR TIME
WAIT TIMEOUT OR Fl KEY OCCURRED
062C
062C
52
062D BA OllF
0630 BD 0000 E
0633 E8 06BE R
0636 5A
0637 FE CE
0639 80 FE 06
TO:
2-140 ROM BIOS
PUSH
MOV
MOV
CALL
POP
DEC
CMP
DX ; SAVE DISKTETTE POINTER
DX,OllFH ; DX POINTS TO DISPLAY POSITION
BP ,OFFSET SYS_DSKLICON ; POINT TO THE DISKETTE ICON
DSPLICON
DX
DH
DH,06H