48 lines
1.0 KiB
C
48 lines
1.0 KiB
C
#include <stdlib.h>
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#include <string.h>
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#include "macrompatcher.h"
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#include "romdrv.h"
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/* romdrv.h defines a ROM disk driver that will present a disk image starting
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* at 0x00880000 (512kb in to the ROM) and is 512kb in size, as a bootable
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* drive.
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* This function installs the driver in place of the .Sony floppy driver,
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* DRVR resource ID 4.
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*/
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RomErr InstallRomdiskDrvr(RomCtx *rom) {
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RomErr err;
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uint32_t sonyoffset;
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uint8_t *tmpptr;
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if(!rom || !rom->data) return eParmErr;
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err = GetDRVROffset(rom, 4, &sonyoffset);
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if(err != eSuccess) return err;
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tmpptr = rom->data + sonyoffset;
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memcpy(tmpptr, romdrv, sizeof(romdrv));
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return eSuccess;
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}
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RomErr InstallRomdiskImage(RomCtx *rom, uint8_t *image, uint32_t imagesize) {
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if(!rom || !rom->data) return eParmErr;
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if(imagesize != (512*1024)) {
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return eParmErr;
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}
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rom->datasize = (512*1024) + imagesize;
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rom->data = realloc(rom->data, rom->datasize);
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if(!rom->data) {
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rom->datasize = 0;
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return eParmErr;
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}
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memcpy(rom->data+(512*1024), image, imagesize);
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return eSuccess;
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}
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