auto packed_size =
lzsa_compress_inmem(..., LZSA_FLAG_RAW_BACKWARD | LZSA_FLAG_RAW_BLOCK, 0, 1);
Verified the result using the lzma command line tool
Using 6502/decompress_fast_v1.asm for decompression, with -DBACKWARDS_DECOMPRESS=1
Packed data is at $880, unpacker at $400
Passing the address of the last byte (end-1) as source and a high memory location ($c000) as dest
I see the unpacker running, first reading 3 bytes, and then just writing and reading one byte at a time, going further and further down in memory, way past the beginning of the packed data, until it hits the depacker routine (at $400) and crashes.
The first 3 bytes read are the last 3 bytes of the compressed data (0x70 0x2c 0x00, in reverse order) like expected.
Likely my own fault but I have;
Compressed data using
Verified the result using the lzma command line tool
Using
6502/decompress_fast_v1.asmfor decompression, with-DBACKWARDS_DECOMPRESS=1Packed data is at $880, unpacker at $400
Passing the address of the last byte (end-1) as source and a high memory location ($c000) as dest
I see the unpacker running, first reading 3 bytes, and then just writing and reading one byte at a time, going further and further down in memory, way past the beginning of the packed data, until it hits the depacker routine (at $400) and crashes.
The first 3 bytes read are the last 3 bytes of the compressed data (0x70 0x2c 0x00, in reverse order) like expected.
Any idea what could be wrong?