mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
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53 lines
886 B
C
53 lines
886 B
C
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#include "shared.h"
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static uint8 block[0x4000];
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void deinterleave_block(uint8 *src)
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{
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int i;
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memcpy(block, src, 0x4000);
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for(i = 0; i < 0x2000; i += 1)
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{
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src[i*2+0] = block[0x2000 + (i)];
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src[i*2+1] = block[0x0000 + (i)];
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}
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}
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int load_rom(char *filename)
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{
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int size, offset = 0;
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uint8 header[0x200];
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uint8 *ptr;
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ptr = load_archive(filename, &size);
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if(!ptr) return (0);
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if((size / 512) & 1)
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{
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int i;
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size -= 512;
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offset += 512;
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memcpy(header, ptr, 512);
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for(i = 0; i < (size / 0x4000); i += 1)
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{
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deinterleave_block(ptr + offset + (i * 0x4000));
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}
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}
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memset(cart_rom, 0, 0x400000);
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if(size > 0x400000) size = 0x400000;
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memcpy(cart_rom, ptr + offset, size);
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/* Free allocated file data */
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free(ptr);
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return (1);
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}
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