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fix 64th street attract demo movements. very nmk-like...

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need to make sure this hasn't broken anything still tho
This commit is contained in:
David Haywood 2015-12-12 19:17:12 +00:00
parent 850733ce5a
commit 083d13a412
2 changed files with 14 additions and 1 deletions
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13
src/mame/drivers/megasys1.cpp
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@ -290,6 +290,17 @@ ADDRESS_MAP_END
#define INTERRUPT_NUM_C INTERRUPT_NUM_B
#define interrupt_C interrupt_B
WRITE16_MEMBER(megasys1_state::ms1_ram_w )
{
// DON'T use COMBINE_DATA
// byte writes end up mirroring in both words like nmk16.c
// 64street relies on this for attract inputs
m_ram[offset] = data;
// if (mem_mask != 0xffff) printf("byte write to RAM %04x %04x %04x\n", offset, data, mem_mask);
}
static ADDRESS_MAP_START( megasys1C_map, AS_PROGRAM, 16, megasys1_state )
ADDRESS_MAP_GLOBAL_MASK(0x1fffff)
AM_RANGE(0x000000, 0x07ffff) AM_ROM
@ -301,7 +312,7 @@ static ADDRESS_MAP_START( megasys1C_map, AS_PROGRAM, 16, megasys1_state )
AM_RANGE(0x0e8000, 0x0ebfff) AM_MIRROR(0x4000) AM_RAM_WRITE(megasys1_scrollram_1_w) AM_SHARE("scrollram.1")
AM_RANGE(0x0f0000, 0x0f3fff) AM_MIRROR(0x4000) AM_RAM_WRITE(megasys1_scrollram_2_w) AM_SHARE("scrollram.2")
AM_RANGE(0x0f8000, 0x0f87ff) AM_RAM_DEVWRITE("palette", palette_device, write) AM_SHARE("palette")
AM_RANGE(0x1c0000, 0x1cffff) AM_MIRROR(0x30000) AM_RAM AM_SHARE("ram") //0x1f****, Cybattler reads attract mode inputs at 0x1d****
AM_RANGE(0x1c0000, 0x1cffff) AM_MIRROR(0x30000) AM_RAM_WRITE(ms1_ram_w) AM_SHARE("ram") //0x1f****, Cybattler reads attract mode inputs at 0x1d****
ADDRESS_MAP_END

2
src/mame/includes/megasys1.h
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@ -149,6 +149,8 @@ public:
INTERRUPT_GEN_MEMBER(megasys1D_irq);
TIMER_DEVICE_CALLBACK_MEMBER(megasys1A_scanline);
TIMER_DEVICE_CALLBACK_MEMBER(megasys1B_scanline);
DECLARE_WRITE16_MEMBER(ms1_ram_w);
inline void scrollram_w(offs_t offset, UINT16 data, UINT16 mem_mask, int which);
void create_tilemaps();
void megasys1_priority_create();