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Another lovely set-up, Seibu really loved to PAL-ize those addresses ...

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This commit is contained in:
Angelo Salese 2013-07-12 14:59:36 +00:00
parent 47967ed9c6
commit 84e555f1a1
3 changed files with 17 additions and 3 deletions
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2
src/mame/drivers/goodejan.c
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@ -425,7 +425,7 @@ static ADDRESS_MAP_START( totmejan_io_map, AS_IO, 16, goodejan_state )
ADDRESS_MAP_END
static ADDRESS_MAP_START( goodejan_io_map, AS_IO, 16, goodejan_state )
AM_RANGE(0x8040, 0x807f) AM_DEVREADWRITE("crtc", seibu_crtc_device, read, write)
AM_RANGE(0x8000, 0x807f) AM_DEVREADWRITE("crtc", seibu_crtc_device, read_xor, write_xor)
AM_IMPORT_FROM(common_io_map)
ADDRESS_MAP_END

16
src/mame/video/seibu_crtc.c
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@ -135,6 +135,7 @@ const device_type SEIBU_CRTC = &device_creator<seibu_crtc_device>;
static ADDRESS_MAP_START( seibu_crtc_vregs, AS_0, 16, seibu_crtc_device )
AM_RANGE(0x001c, 0x001d) AM_WRITE(layer_en_w)
AM_RANGE(0x0020, 0x002b) AM_WRITE(layer_scroll_w)
AM_RANGE(0x0000, 0x004f) AM_RAM
ADDRESS_MAP_END
WRITE16_MEMBER( seibu_crtc_device::layer_en_w)
@ -161,8 +162,7 @@ WRITE16_MEMBER( seibu_crtc_device::layer_scroll_w)
seibu_crtc_device::seibu_crtc_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: device_t(mconfig, SEIBU_CRTC, "Seibu CRT Controller", tag, owner, clock, "seibu_crtc", __FILE__),
device_memory_interface(mconfig, *this),
m_space_config("vregs", ENDIANNESS_LITTLE, 16, 16, 0, NULL, *ADDRESS_MAP_NAME(seibu_crtc_vregs))
m_space_config("vregs", ENDIANNESS_LITTLE, 16, 7, 0, NULL, *ADDRESS_MAP_NAME(seibu_crtc_vregs))
{
}
@ -277,3 +277,15 @@ WRITE16_MEMBER( seibu_crtc_device::write_alt )
{
write_word(BITSWAP16(offset,15,14,13,12,11,10,9,8,7,6,5,3,4,2,1,0),data);
}
/* Good E Jang / Seibu Cup Soccer Selection XOR bit 6 of the address bus */
READ16_MEMBER( seibu_crtc_device::read_xor )
{
return read_word(offset ^ 0x20);
}
WRITE16_MEMBER( seibu_crtc_device::write_xor )
{
write_word(offset ^ 0x20,data);
}

2
src/mame/video/seibu_crtc.h
View File

@ -46,8 +46,10 @@ public:
// I/O operations
DECLARE_WRITE16_MEMBER( write );
DECLARE_WRITE16_MEMBER( write_alt );
DECLARE_WRITE16_MEMBER( write_xor );
DECLARE_READ16_MEMBER( read );
DECLARE_READ16_MEMBER( read_alt );
DECLARE_READ16_MEMBER( read_xor );
DECLARE_WRITE16_MEMBER(layer_en_w);
DECLARE_WRITE16_MEMBER(layer_scroll_w);
protected: