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romsplit.S
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;APSFFD31A8FFFD31A8FFFD31A8FFFD31A8FFFD31A8FFFD31A8FFFD31A8FFFD31A8FFFD31A8F585447A6
; Simple program
; loads file "DiagROM" and saves three files:
; 16bit.bin - byteswapped image for burning 16 bit eproms
; 32bitHI.bin - byteswapped image of high word for burning 32 bit eproms
; 32bitLO.bin - byteswapped image of low word for burning 32 bit eproms
MEMF_FAST = 4
SIZE = 512*1024
move.l 4.w,a6
lea Dos,a1
jsr -408(a6) ;Open DOS library
move.l d0,DOSBase
lea InitTxt,a0
bsr Print
lea infile,a0
bsr LoadFile
cmp.b #0,end
bne Error
move.l d0,inadr
move.l #SIZE,d1
move.l #512*1024,d0
bsr AllocateMemory ; My own memoryallocateroutine that can be easly freed with just one function for all allocations.
cmp.b #0,d0
beq outofmem
move.l d0,workadr
bsr CopyAll
bsr ByteSwap
lea Filename16,a0
bsr SaveFile
cmp.l #0,d0
bne Error
bsr CopyHigh
bsr ByteSwap
lea Filename32hi,a0
bsr SaveFile
cmp.l #0,d0
bne Error
bsr CopyLo
bsr ByteSwap
lea Filename32lo,a0
bsr SaveFile
cmp.l #0,d0
bne Error
bsr FreeAllocated
clr.l d0
clr.l d1
rts
Error:
bchg #1,$bfe001
move.b #1,end
bsr FreeAllocated
move.l #40,d0
clr.l d1
rts
outofmem:
lea outmem,a0
bsr Print
bra Error
CopyAll:
clr.l d0
move.l inadr,a0
move.l workadr,a1
.loop:
move.l (a0)+,(a1)+
add.l #4,d0
cmp.l #SIZE,d0
blt .loop
rts
CopyHigh:
clr.l d0
move.l inadr,a0
move.l workadr,a1
move.l a1,a2
add.l #SIZE/2,a2
.loop:
move.w (a0),d1
move.w d1,(a1)+
move.w d1,(a2)+
addi.l #4,a0
add.l #4,d0
cmp.l #SIZE,d0
blt .loop
rts
CopyLo:
clr.l d0
move.l inadr,a0
move.l workadr,a1
move.l a1,a2
add.l #SIZE/2,a2
.loop:
move.w 2(a0),d1
move.w d1,(a1)+
move.w d1,(a2)+
addi.l #4,a0
add.l #4,d0
cmp.l #SIZE,d0
blt .loop
rts
ByteSwap:
clr.l d0
move.l workadr,a0
.loop:
move.b (a0),d1
move.b 1(a0),d2
move.b d2,(a0)+
move.b d1,(a0)+
add.l #2,d0
cmp.l #SIZE,d0
blt .loop
rts
;----------------------------------------
AllocateMemory: ;Allocate memory AND adds
;in the Allocated memorylist
;for easy deallocation.
;IN: D0=Memoryblock wanted
; D1=memoryType wanted
;OUT:D0=Memoryposition|0=Error
movem.l a0-a6/d1-d7,-(a7)
add.l #8,D0 ;Adds bytes for handling
bsr.s AllocMem
beq.s .Error
lea Allocated_Memory_Pos,a0
.Loop: move.l (a0),a1
cmp.l #0,(a1)
beq.w .NextBlock
move.l a1,a0
bra.s .Loop ;Loop until next free block
.NextBlock:
move.l d0,(a0)
move.l a0,d1
move.l d0,a0
move.l #Allocated_Memory_Pos+4,(a0)
move.l d1,4(a0)
add.l #8,d0
.Error: movem.l (a7)+,a0-a6/d1-d7
rts
;----------------------------------------
AllocMem: ;Allocates memory
move.l $4,a6 ;IN: D0=memoryblock wanted
; D1=MemoryType wanted
;OUT: D0=Where the memory is
cmp.l #0,d0 ; 0=ERROR
beq.s .MemErr
jsr -684(a6)
.MemErr:
rts
FreeMem: ;Free Memory
move.l $4,a6 ;IN: D0 = WHERE
move.l d0,a1
jsr -690(a6)
rts
;----------------------------------------
FreeAllocated: ;Free all allocated blocks
;with AllocateMemory
;NO IN or OUT variables
;It just does it!
;(It's a kinda MAGIC tadaatada)
movem.l a0-a6/d0-d7,-(a7)
lea Allocated_Memory_Pos,a0
move.l (a0),a1
cmp.l #0,(a1)
beq.s .End ;No Blocks allocated atall!
move.l (a0),a0
.Loop: cmp.l #0,(a0)
beq.s .End ;Last Block done
move.l (a0),a2
move.l a0,d0
bsr FreeMem
move.l a2,a0
bra.s .Loop
.End: movem.l (a7)+,a0-a6/d0-d7
rts
;----------------------------------------
FreeBlock: ;Free a memoryblock from
;memorylist allocated with
;AllocateMemory
; IN: D0=Where
;OUT: D0: 0=Error (not found)
movem.l a0-a6/d1-d7,-(a7)
lea Allocated_Memory_Pos,a0
sub.l #8,d0
move.l (a0),a0
.Loop: cmp.l a0,d0
beq.s .ThatsIT ;We got the block
cmp.l #0,(a0)
beq.s .Error ;BlockNotFound
move.l (a0),a0
bra.s .Loop
.ThatsIT:
move.l (a0),a1 ;get adr to the NEXT block.
move.l 4(a0),a2 ;get the adr to the block before.
cmp.l #0,(a1)
beq.s .NextNull ;this is the LAST block
move.l a1,(a2)
move.l a2,4(a1)
.Free:
bsr FreeMem
.Ok: bset #1,d0
.NotOk:
movem.l (a7)+,a0-a6/d1-d7
rts
.NextNull:
move.l a1,(a2)
bra.s .Free
.Error: clr.l d0
bra.s .NotOk
Allocated_Memory_Pos:
dc.l *+4,0 ;Position of alloc mem list
Print: ; Prints string in A0
movem.l a1-a6/d1-d7,-(a7)
; OLutput: D0 = length
move.l DOSBase,a6
clr.l d7
move.l a0,d2
.loop:
add.l #1,d7
cmp.b #0,(a0)+
bne.s .loop
move.l d7,d3
jsr -60(a6)
move.l d0,d1
jsr -48(a6)
move.l d7,d0
movem.l (a7)+,a1-a6/d1-d7
rts
LoadFile: ;Loads a file into memory
move.l a0,d7
lea .Loadtext,a0
jsr Print
move.l d7,a0
jsr Print
lea .Loadnewline,a0
jsr Print
move.l d7,a0
bsr CheckLen ;Allocated memory with the
beq.s .Error ;AllocateMemory routine.
;IN: A0 = Pointer to Filename
move.l d0,.LoadLength ;Out: D0=Memoryposition
bsr AllocateMemory ; D1=FileLength
beq.s .Error2
move.l d0,.LoadInto
move.l $4,a6
lea Dos,a1 ;IN: File=Filename (incl. path)
jsr -408(a6) ; LoadInto=Where to load to
move.l d0,a6 ; LoadLength=Filelength
move.l FileName,d1
move.l #00001005,d2
jsr -30(a6)
beq .Error
move.l d0,.Peekare
move.l d0,d1
move.l .LoadInto,d2
move.l .LoadLength,d3
jsr -42(a6)
move.l .Peekare,d1
jsr -36(a6)
beq.s .Error
move.l .LoadLength,d1
move.l .LoadInto,d0
rts
.Error:
lea .Loaderror,a0
jsr Print
move.b #1,end
rts
.Error2:
lea .Loadmem,a0
jsr Print
move.b #1,end
rts
.Peekare:
dc.l 0
.LoadInto:
dc.l 0
.LoadLength:
dc.l 0
.Loadtext:
dc.b "Loading file: ",0
.Loadnewline:
dc.b $a,0
.Loaderror:
dc.b $a,"ERROR LOADING FILE - EXITING",$a,0
.Loadmem:
dc.b $a,"ERROR - OUT OF MEMORY - EXITING",$a,0
EVEN
SaveFile:
move.l a0,a5
lea .Savetext,a0
bsr Print
move.l a5,a0
bsr Print
lea .Savenewline,a0
bsr Print
move.l $4,a6
lea Dos,a1
jsr -408(a6)
move.l d0,a6
move.l a5,d1
move.l #1006,d2
jsr -30(a6)
beq .Error
move.l d0,.Peekare
move.l d0,d1
move.l workadr,d2
move.l #SIZE,d3
jsr -48(a6)
move.l .Peekare,d1
jsr -36(a6)
clr.l d0
rts
.Error:
lea .Errortext,a0
bsr Print
move.l #-1,d0
move.b #1,end
rts
.Peekare:
dc.l 0
.Savetext:
dc.b "Saving file: ",0
.Savenewline:
dc.b $a,0
.Errortext:
dc.b $a,"ERROR SAVING FILE",$a,0
;----------------------------------------
CheckLen: ;Checks length of file
move.l a0,FileName
move.l $4,a6 ;IN: A0=Pointer to filename
lea Dos,a1 ;OUT: D0=Length
jsr -408(a6) ; A0=File structure
move.l d0,a6
move.l FileName,d1 ;Filename
move.l #-2,d2
jsr -84(a6)
beq .Error
move.l d0,.Lock
move.l d0,d1
move.l #.FileInfo,d2
jsr -102(a6)
move.l .Lock,d1
jsr -90(a6)
lea .FileInfo,a0
cmp.w #$1111,-2(a0)
bne .yeah
addi.l #2,a0
.yeah:
move.l 122(a0),d0
rts
.Error:
move.l #0,d0
rts
.Lock: dc.l 0
dc.w $1111
;Dummy! DO NOT HAVE ANYTHING HERE
.FileInfo:
blk.l 300,0
Dos: dc.b "dos.library",0
FileName:
dc.l 0
DOSBase:
dc.l 0
inadr:
dc.l 0
workadr:
dc.l 0
end:
dc.l 0
Filename16:
dc.b "16bit.bin",0
Filename32hi:
dc.b "32bitHI.bin",0
Filename32lo:
dc.b "32bitLO.bin",0
InitTxt:
dc.b "Filesplitter V0.1 by John (Chucky) Hertell",$a,$a
dc.b "Simply reads the file indata.bin that should be a binary file for Kickstart ROM and splits it for burning",$a
dc.b "This software assumes 512MB Roms and will make 32 bit roms 2x512MB files with duplicate data",$a,$a
dc.b "Produces 3 files:",$a
dc.b " 16bit.bin - byteswapped image for burning 16 bit eproms",$a
dc.b " 32bitHI.bin - byteswapped image of high word for burning images for 32Bit",$a
dc.b " 32bitLO.bin - byteswapped image of low word for burning images for 32Bit",$a,$a,0
infile:
dc.b "DiagROM",0
outmem:
dc.b " -- ERROR: out of fastmem for work-buffer",$a,0