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Prevent "ROLLING START" scrolling glitch in Scud Race

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There is a quirk of the tilegen chip that causes this glitch not to occur on real hardware, but we can't be sure what it is without testing
Much easier to just patch all the Scud Race ROM sets
This commit is contained in:
gm-matthew 2023-08-28 03:12:43 +01:00 committed by Bart Trzynadlowski
parent c9b718e89a
commit 38a95088e8
1 changed files with 18 additions and 0 deletions
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18
Config/Games.xml
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@ -1443,6 +1443,10 @@
</inputs> </inputs>
</hardware> </hardware>
<roms> <roms>
<patches>
<!-- Prevent "rolling start" scrolling glitch -->
<patch region="crom" bits="32" offset="0x14BDB8" value="0x20B201E0" />
</patches>
<region name="crom" stride="8" chunk_size="2" byte_swap="true"> <region name="crom" stride="8" chunk_size="2" byte_swap="true">
<file offset="0" name="epr-19691.20" crc32="0x83523B89" /> <file offset="0" name="epr-19691.20" crc32="0x83523B89" />
<file offset="2" name="epr-19690.19" crc32="0x25F007FE" /> <file offset="2" name="epr-19690.19" crc32="0x25F007FE" />
@ -1531,6 +1535,8 @@
<patches> <patches>
<!-- Secret debug menu --> <!-- Secret debug menu -->
<patch region="crom" bits="32" offset="0x199DE8" value="0x00050208" /> <patch region="crom" bits="32" offset="0x199DE8" value="0x00050208" />
<!-- Prevent "rolling start" scrolling glitch -->
<patch region="crom" bits="32" offset="0x14BDF4" value="0x20B201E0" />
</patches> </patches>
<region name="crom" stride="8" chunk_size="2" byte_swap="true"> <region name="crom" stride="8" chunk_size="2" byte_swap="true">
<file offset="0" name="epr-19734.20" crc32="0xBE897336" /> <file offset="0" name="epr-19734.20" crc32="0xBE897336" />
@ -1563,6 +1569,10 @@
</inputs> </inputs>
</hardware> </hardware>
<roms> <roms>
<patches>
<!-- Prevent "rolling start" scrolling glitch -->
<patch region="crom" bits="32" offset="0x146350" value="0x20B201E0" />
</patches>
<region name="crom" stride="8" chunk_size="2" byte_swap="true"> <region name="crom" stride="8" chunk_size="2" byte_swap="true">
<file offset="0" name="epr-19607a.20" crc32="0x24301A12" /> <file offset="0" name="epr-19607a.20" crc32="0x24301A12" />
<file offset="2" name="epr-19608a.19" crc32="0x1426160E" /> <file offset="2" name="epr-19608a.19" crc32="0x1426160E" />
@ -1636,6 +1646,10 @@
</inputs> </inputs>
</hardware> </hardware>
<roms> <roms>
<patches>
<!-- Prevent "rolling start" scrolling glitch -->
<patch region="crom" bits="32" offset="0x14E3F0" value="0x20B201E0" />
</patches>
<region name="crom" stride="8" chunk_size="2" byte_swap="true"> <region name="crom" stride="8" chunk_size="2" byte_swap="true">
<file offset="0" name="epr-20095a.20" crc32="0x58C7E393" /> <file offset="0" name="epr-20095a.20" crc32="0x58C7E393" />
<file offset="2" name="epr-20094a.19" crc32="0xDBF17A43" /> <file offset="2" name="epr-20094a.19" crc32="0xDBF17A43" />
@ -1684,6 +1698,10 @@
</inputs> </inputs>
</hardware> </hardware>
<roms> <roms>
<patches>
<!-- Prevent "rolling start" scrolling glitch -->
<patch region="crom" bits="32" offset="0x14E014" value="0x20B201E0" />
</patches>
<region name="crom" stride="8" chunk_size="2" byte_swap="true"> <region name="crom" stride="8" chunk_size="2" byte_swap="true">
<file offset="0" name="epr-20095.20" crc32="0x44467BC1" /> <file offset="0" name="epr-20095.20" crc32="0x44467BC1" />
<file offset="2" name="epr-20094.19" crc32="0x299B6257" /> <file offset="2" name="epr-20094.19" crc32="0x299B6257" />