15,6 → 15,14 |
CPU 8086 |
org 0x100 |
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; print whatever drive/filename is set at 0x5C (1st unopened FCB in the PSP) |
mov dx, PARAM |
mov ah, 0x09 |
int 0x21 |
|
mov bx, 0x5C |
call PRINTDTA |
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; FindFirst_FCB applied to PSP:5C (1st unopened FCB) |
mov dx, 0x5C |
mov ah, 0x11 |
26,6 → 34,7 |
NEXT: |
|
; print filename in DTA |
mov bx, 0x80 |
call PRINTDTA |
|
; FindNext_FCB on PSP until nothing left |
39,22 → 48,25 |
|
int 0x20 |
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PARAM: |
db "PARAMETER = $"; |
|
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; ****** print the filename present in the DTA (DTA is assumed at 0x80) ****** |
; ****** print the filename present in the DTA (DTA is at [BX]) ****** |
PRINTDTA: |
; print drive in the DTA |
mov ah, 0x02 |
mov dl, [0x80] |
add dl, 'A' |
mov dl, [bx] |
add dl, '@' |
int 0x21 |
mov dl, ':' |
int 0x21 |
; print filename/extension (in FCB format) |
mov ah, 0x40 ; write to file |
mov cx, 11 ; 11 bytes (8+3) |
mov dx, bx ; filename field at the default DTA location |
inc dx |
mov bx, 1 ; output to stdout |
mov cx, 11 ; 11 bytes (8+3) |
mov dx, 0x81 ; filename field at the default DTA location |
int 0x21 |
; print a trailing CR/LF |
mov ah, 0x02 ; display character in DL |