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Comparison of Patch Formats
From SnesLab
Several file formats for distributing romhacks have been developed over the years:
| Format | Full Name | Developer | Year Released | Max Source ROM Size | Max Patch File Size | Specification | Spec Length | Reversible? | Metadata? | Integrity Checks? | Efficiently handles Copy? | Efficiently handles move? | Header String |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| IPS | International Patch Standard | DAX & The M.C.A / Elite [1] | ~1993 | 2047 Mb | 7.99 Mb | https://zerosoft.zophar.net/ips.php | < 1 page | No | No | No | No | No | PATCH |
| xdelta | Joshua MacDonald | 1997 | http://tools.ietf.org/html/rfc3284 | 29 pages | |||||||||
| UPS | Near | 2008 | unlimited | unlimited | https://www.romhacking.net/documents/392 | 3 pages | Yes | No | Yes | UPS1 | |||
| BPS | Near | 2012 | unlimited | unlimited | https://www.romhacking.net/documents/746 | 1 HTML page | No | Yes | Yes | Yes | Yes | BPS1 |
References
- SNESTL12.DOC from https://www.romhacking.net/utilities/18