A83: Resize a program...
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A83: Resize a program...
Hi!
I want to resize a file from within a program, for dynamicly memory
allocating.
To increse the filesize of an file with 20 bytes, i've wrote the
folowing code:
Main: ld hl,file
rst 20h ; copy 9 bytes from (hl) to (OP1)
call _chkfindsym
push hl
push de
ld h,d
ld l,e
call _ldhlind ; ld hl,(hl)
push hl
inc de
inc de
add hl,de
ex de,hl
ld hl,20
call _insertmem ; insert 20(=hl) bytes from de to 9327h
pop hl
pop de
ex de,hl
ld bc,-20
add hl,bc
ex de,hl
push de
ld bc,20
add hl,bc
ld a,l
ld (de),a
inc de
ld a,h
ld (de),a
pop de
pop hl
dec hl
ld (hl),e
dec hl
ld (hl),d
ret
file: .db 05,"TEST",0
When i run this program, the file 'TEST' gets 20 bytes larger, but not
the way i want it: it writes a new size-word 20 bytes before the start
and updates the vat, but the insertmem doesn't work: it just overlaps a
file/data before prgmTEST...
Can someone tell me what's wrong or help me with an working resizer????
Thanx for any help,
Sebastiaan Roodenburg
sebastiaan@rimsystems.nl
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