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(From AtariAce)

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Subject: [patch] Fix megaplay.c0122u4red

This fixes the crash reported as megaplay.c0122u4red.  The driver
doesn't map the offset into the correct range for the handler. -bios 1
still shows corrupt graphics, but at least it doesn't crash anymore.
This commit is contained in:
Aaron Giles 2008-01-14 17:38:37 +00:00
parent 375c3df7d8
commit 81feac74f6
1 changed files with 2 additions and 2 deletions
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4
src/mame/drivers/megaplay.c
View file

@ -464,7 +464,7 @@ static READ8_HANDLER( bank_r )
UINT8* game = memory_region(REGION_CPU1);
if(game_banksel == 0x142) // Genesis I/O
return megaplay_genesis_io_r((offset/2) & 0x1f, 0xffff);
return megaplay_genesis_io_r((offset & 0x1f) / 2, 0xffff);
if(bios_mode & MP_ROM)
{
@ -497,7 +497,7 @@ static READ8_HANDLER( bank_r )
static WRITE8_HANDLER ( bank_w )
{
if(game_banksel == 0x142) // Genesis I/O
genesis_io_w((offset/2) & 0x1f, data, 0xffff);
genesis_io_w((offset & 0x1f) / 2, data, 0xffff);
if(offset <= 0x1fff && (bios_width & 0x08))
ic37_ram[(0x2000 * (bios_bank & 0x03)) + offset] = data;