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author Michaël Banaan Ananas <happppp@users.noreply.github.com>2013-12-02 20:24:00 +0000
committer Michaël Banaan Ananas <happppp@users.noreply.github.com>2013-12-02 20:24:00 +0000
commit97ea1a5f3cc8528d922ebf7ca22585899ddc9e65 (patch)
treeba7cdca3e51a87b646cf22ae41d02df07b7931f9 /src/mame/drivers/omegrace.c
parentec9a6f4d5269db6752cb921dcf81ef490f26524e (diff)
magic mirror...
this fixes MT00785: omegrace: Corrupted music after completing first several levels.
Diffstat (limited to 'src/mame/drivers/omegrace.c')
-rw-r--r--src/mame/drivers/omegrace.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/src/mame/drivers/omegrace.c b/src/mame/drivers/omegrace.c
index 159359626fe..6fb28cc1b0c 100644
--- a/src/mame/drivers/omegrace.c
+++ b/src/mame/drivers/omegrace.c
@@ -379,16 +379,16 @@ ADDRESS_MAP_END
*************************************/
static ADDRESS_MAP_START( sound_map, AS_PROGRAM, 8, omegrace_state )
- AM_RANGE(0x0000, 0x07ff) AM_ROM
+ AM_RANGE(0x0000, 0x07ff) AM_ROM AM_MIRROR(0x800)
AM_RANGE(0x1000, 0x13ff) AM_RAM
ADDRESS_MAP_END
static ADDRESS_MAP_START( sound_port, AS_IO, 8, omegrace_state )
ADDRESS_MAP_GLOBAL_MASK(0xff)
- AM_RANGE(0x00, 0x00) AM_READ(soundlatch_byte_r) /* likely ay8910 input port, not direct */
- AM_RANGE(0x00, 0x01) AM_DEVWRITE("ay1", ay8910_device, address_data_w)
- AM_RANGE(0x02, 0x03) AM_DEVWRITE("ay2", ay8910_device, address_data_w)
+ AM_RANGE(0x00, 0x00) AM_READ(soundlatch_byte_r) // the game reads from ay1 port b, but ay8912 only has port a
+ AM_RANGE(0x00, 0x01) AM_DEVWRITE("ay1", ay8912_device, address_data_w)
+ AM_RANGE(0x02, 0x03) AM_DEVWRITE("ay2", ay8912_device, address_data_w)
ADDRESS_MAP_END