mister-devel/GameAndWatch_MiSTer
1
0
Fork 0
mirror of https://github.com/MiSTer-devel/GameAndWatch_MiSTer.git synced 2026-05-24 03:03:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

fix (docs): Incorrect sizes/addresses for sections of ROM format

Browse Source
This commit is contained in:
Adam Gastineau
2023-06-29 07:36:16 -07:00
parent 9563e3f41d
commit e53258d67f
1 changed files with 4 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
docs/format.md
View File

@@ -2,7 +2,7 @@
The MAME ROM format is not conducive to FPGA use, so we have to package up all of the assets into a new format. This format is designed with space for growth, but it should cover most usecases (i.e. games) already.
First is a config section of `0x80` bytes, followed by two byte interleaved 720x720 images, `0x2DB40` bytes of mask config, and finally the ROM data.
First is a config section of `0x100` bytes, followed by two byte interleaved 720x720 images, `0x2DB40` bytes of mask config, and finally the ROM data.
## Config
@@ -13,9 +13,9 @@ First bit is version. Spec V1 is as follows:
0x8: input mapping 40 bytes - [s0 config 4 bytes][s1 config 4 bytes] ... [s7 config 4 bytes][b config 1 byte][ba config 1 byte][acl config 1 byte][grounded port index 1 byte][reserved 4 bytes]
0x30: Start of reserved space - This is reserved for future functionality
0x79: [generator tool commit (ascii) 7 bytes]
0x80: Start of byte interleaved images
0x17BB80: [mask config 0x2DB40 bytes] End of images, start of mask config
0x1A96C0: ROM data
0x100: Start of byte interleaved images
0x2F7700: [mask config 0x2DB40 bytes] End of images, start of mask config
0x325240: ROM data
```
0000_1101_11 -> 00_0011_0111