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nbajamex: Implemented ROM banking, game coins up and is playable. [R. Belmont, Peter Ferrie]

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This commit is contained in:
arbee 2015-01-24 21:17:59 -05:00
parent 50a9cf0de4
commit 3d28212fbb
1 changed files with 44 additions and 2 deletions
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46
src/mame/drivers/zn.c
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@ -83,6 +83,7 @@ public:
DECLARE_READ16_MEMBER(bam2_unk_r);
DECLARE_WRITE16_MEMBER(acpsx_00_w);
DECLARE_WRITE16_MEMBER(acpsx_10_w);
DECLARE_WRITE16_MEMBER(nbajamex_bank_w);
DECLARE_WRITE16_MEMBER(nbajamex_80_w);
DECLARE_READ16_MEMBER(nbajamex_08_r);
DECLARE_READ16_MEMBER(nbajamex_80_r);
@ -2034,17 +2035,55 @@ WRITE16_MEMBER(zn_state::acpsx_00_w)
verboselog(0, "acpsx_00_w( %08x, %08x, %08x )\n", offset, data, mem_mask );
}
WRITE16_MEMBER(zn_state::nbajamex_bank_w)
{
UINT32 newbank = 0;
verboselog(0, "nbajamex_bank_w( %08x, %08x, %08x )\n", offset, data, mem_mask );
if (offset > 1)
{
logerror("Unknown banking offset %x!\n", offset);
}
if (offset == 1)
{
data -= 1;
}
if (data <= 1)
{
newbank = (data * 0x400000);
}
else if (data >= 0x10)
{
data -= 0x10;
newbank = (data * 0x400000);
newbank += 0x200000;
}
if (offset == 0)
{
membank( "bankedroms" )->set_base( memregion( "bankedroms" )->base() + newbank);
}
else if (offset == 1)
{
newbank += 0x200000;
membank( "bankedroms2" )->set_base( memregion( "bankedroms" )->base() + newbank);
}
}
WRITE16_MEMBER(zn_state::acpsx_10_w)
{
verboselog(0, "acpsx_10_w( %08x, %08x, %08x )\n", offset, data, mem_mask );
}
// all 16 bits goes to the external soundboard's latch (see sound test menu)
WRITE16_MEMBER(zn_state::nbajamex_80_w)
{
verboselog(0, "nbajamex_80_w( %08x, %08x, %08x )\n", offset, data, mem_mask );
psxirq_device *psxirq = (psxirq_device *) machine().device("maincpu:irq");
psxirq->intin10(1);
membank( "bankedroms" )->set_base( memregion( "bankedroms" )->base() + (data ? 0xe00000 : 0));
}
READ16_MEMBER(zn_state::nbajamex_08_r)
@ -2054,6 +2093,7 @@ READ16_MEMBER(zn_state::nbajamex_08_r)
return data;
}
// possibly a readback from the external soundboard?
READ16_MEMBER(zn_state::nbajamex_80_r)
{
UINT32 data = 0xffffffff;
@ -2070,7 +2110,8 @@ ADDRESS_MAP_END
static ADDRESS_MAP_START(nbajamex_map, AS_PROGRAM, 32, zn_state)
AM_RANGE(0x1f000000, 0x1f1fffff) AM_ROMBANK("bankedroms")
AM_RANGE(0x1f200000, 0x1f207fff) AM_RAM AM_SHARE("eeprom")
AM_RANGE(0x1f200000, 0x1f7fffff) AM_ROMBANK("bankedroms2")
AM_RANGE(0x1fbfff00, 0x1fbfff07) AM_WRITE16(nbajamex_bank_w, 0xffffffff)
AM_RANGE(0x1fbfff08, 0x1fbfff0b) AM_READ16(nbajamex_08_r, 0xffff)
AM_RANGE(0x1fbfff80, 0x1fbfff83) AM_READWRITE16(nbajamex_80_r, nbajamex_80_w, 0xffff)
@ -2080,6 +2121,7 @@ ADDRESS_MAP_END
MACHINE_RESET_MEMBER(zn_state,nbajamex)
{
membank( "bankedroms" )->set_base( memregion( "bankedroms" )->base() );
membank( "bankedroms2" )->set_base( memregion( "bankedroms" )->base() + 0x200000 );
}
static ADDRESS_MAP_START(jdredd_map, AS_PROGRAM, 32, zn_state)