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author Aaron Giles <aaron@aarongiles.com>2008-01-14 17:38:37 +0000
committer Aaron Giles <aaron@aarongiles.com>2008-01-14 17:38:37 +0000
commit81feac74f6906620c6be408e9f89d1835daedc1c (patch)
treef19f0db4b0cb78a2351f2576a7897c5029831b4f
parent375c3df7d8080c6ec3c0f35a92bea9a01ea57ab1 (diff)
(From AtariAce)
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.
-rw-r--r--src/mame/drivers/megaplay.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mame/drivers/megaplay.c b/src/mame/drivers/megaplay.c
index d0e2db94ecf..b8570f1a9ea 100644
--- a/src/mame/drivers/megaplay.c
+++ b/src/mame/drivers/megaplay.c
@@ -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;