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small update

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This commit is contained in:
Michaël Banaan Ananas 2012-04-21 20:00:18 +00:00
parent fa0beabf41
commit 655ea9373f
1 changed files with 12 additions and 12 deletions
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24
src/mame/drivers/meyc8088.c
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@ -2,7 +2,8 @@
Meyco 8088 based hardware
significant chips: i8088 CPU, two i8155, ???
significant chips: i8088 CPU, two i8155, what else???
It locks up with an interrupt error. How are interrupts generated? The vector is written to $00080, pointing to $fe19f
*/
@ -57,19 +58,18 @@ static SCREEN_UPDATE_IND16( meyc8088 )
***************************************************************************/
static ADDRESS_MAP_START( meyc8088_map, AS_PROGRAM, 8, meyc8088_state )
AM_RANGE(0x00000, 0x003ff) AM_RAM
AM_RANGE(0x00400, 0x007ff) AM_RAM
AM_RANGE(0x00000, 0x007ff) AM_RAM
AM_RANGE(0x70000, 0x77fff) AM_RAM AM_SHARE("vram")
// AM_RANGE(0xb0000, 0xb0000) AM_NOP
AM_RANGE(0xb0000, 0xb00ff) AM_DEVREADWRITE("i8155_0", i8155_device, memory_r, memory_w)
AM_RANGE(0xb0800, 0xb0807) AM_DEVREADWRITE("i8155_0", i8155_device, io_r, io_w)
// AM_RANGE(0xb1000, 0xb1000) AM_NOP
AM_RANGE(0xb1000, 0xb10ff) AM_DEVREADWRITE("i8155_1", i8155_device, memory_r, memory_w)
AM_RANGE(0xb1800, 0xb1807) AM_DEVREADWRITE("i8155_1", i8155_device, io_r, io_w)
// AM_RANGE(0xb2000, 0xb2000) AM_NOP
// AM_RANGE(0xb3000, 0xb3000) AM_NOP
// AM_RANGE(0xb3800, 0xb3800) AM_NOP
// AM_RANGE(0xb4000, 0xb4000) AM_NOP
// AM_RANGE(0xb5000, 0xb5000) AM_NOP
AM_RANGE(0xfa000, 0xfffff) AM_ROM
// AM_RANGE(0xb2000, 0xb2000) AM_NOP // ?
// AM_RANGE(0xb3000, 0xb3000) AM_RAM // serial device, debug related
// AM_RANGE(0xb3800, 0xb3800) AM_RAM // ? writes 00 00 00 40 4A 37
// AM_RANGE(0xb4000, 0xb4000) AM_NOP // ?
// AM_RANGE(0xb5000, 0xb5000) AM_NOP // ?
AM_RANGE(0xf8000, 0xfffff) AM_ROM
ADDRESS_MAP_END
@ -228,7 +228,7 @@ static MACHINE_CONFIG_START( meyc8088, meyc8088_state )
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500))
MCFG_SCREEN_SIZE(512,512)
MCFG_SCREEN_VISIBLE_AREA(0, 512-1, 0, 512-1)
MCFG_SCREEN_UPDATE_STATIC(meyc8088)