M.C.-Kids-NES-text-Decompressor

Use same patch nes rom then use:

decompressor.py [romFile] [startOffset] [outFile]

Otherwise there are three block of text. Located in:

• 0x4010 to 0x4608
• 0x4609 to 0x4AAB
• 0x4AAC to 0x5082

The game text compression It's a kind of Lempel-Ziv:

• 4 bits: size of the "source" argument for pastcopies, in bits
• 4 bits: size of the "length" argument for pastcopies, in bits
• Stream of compressed bits; read each byte most significant bit to least

The stream of compressed bits consists of a sequence of these two commands:

Pastcopy

• 0 (source) (length)
• Copies previously-decompressed data.
• The number of bits used by "source" and "length" is specified in the first byte of compressed data.
• The "source" is how many bytes ago to copy from, and a source of 0 indicates the end.
• The "length" is the number of bytes to copy, less three (so a length of 0 copies 3 bytes, 1 copies 4, etc).

Literal

• 1 nnnnnnnn
• Outputs one literal byte.