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Merge pull request #1106 from MooglyGuy/master

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Hook up bwtwo video for sun4_40
This commit is contained in:
Vas Crabb 2016-07-15 23:11:46 +10:00 committed by GitHub
commit 528880efc1
1 changed files with 41 additions and 0 deletions
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41
src/mame/drivers/sun4.cpp
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@ -505,6 +505,7 @@ public:
, m_type1space(*this, "type1")
, m_ram(*this, RAM_TAG)
, m_rom(*this, "user1")
, m_bw2_vram(*this, "bw2_vram")
, m_rom_ptr(nullptr)
, m_system_enable(0)
{
@ -538,6 +539,8 @@ public:
DECLARE_FLOPPY_FORMATS( floppy_formats );
UINT32 bw2_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
protected:
required_device<mb86901_device> m_maincpu;
required_device<z80scc_device> m_scc1;
@ -546,6 +549,8 @@ protected:
optional_device<address_map_bank_device> m_type0space, m_type1space;
required_device<ram_device> m_ram;
required_memory_region m_rom;
optional_shared_ptr<UINT32> m_bw2_vram;
UINT32 *m_rom_ptr;
UINT32 m_context;
UINT8 m_system_enable;
@ -571,6 +576,35 @@ private:
void fcodes_command(int ref, int params, const char **param);
};
UINT32 sun4_state::bw2_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
UINT32 *scanline;
int x, y;
UINT8 pixels;
static const UINT32 palette[2] = { 0xffffff, 0 };
UINT8 *m_vram = (UINT8 *)m_bw2_vram.target();
for (y = 0; y < 900; y++)
{
scanline = &bitmap.pix32(y);
for (x = 0; x < 1152/8; x++)
{
pixels = m_vram[(y * (1152/8)) + (BYTE4_XOR_BE(x))];
*scanline++ = palette[(pixels>>7)&1];
*scanline++ = palette[(pixels>>6)&1];
*scanline++ = palette[(pixels>>5)&1];
*scanline++ = palette[(pixels>>4)&1];
*scanline++ = palette[(pixels>>3)&1];
*scanline++ = palette[(pixels>>2)&1];
*scanline++ = palette[(pixels>>1)&1];
*scanline++ = palette[(pixels&1)];
}
}
return 0;
}
READ32_MEMBER( sun4_state::sun4c_mmu_r )
{
UINT8 asi = m_maincpu->get_asi();
@ -1290,6 +1324,7 @@ static ADDRESS_MAP_START(type1space_map, AS_PROGRAM, 32, sun4_state)
AM_RANGE(0x07200000, 0x07200003) AM_READWRITE8(fdc_r, fdc_w, 0xffffffff)
AM_RANGE(0x08000000, 0x08000003) AM_READ(ss1_sl0_id) // slot 0 contains SCSI/DMA/Ethernet
AM_RANGE(0x0e000000, 0x0e000003) AM_READ(ss1_sl3_id) // slot 3 contains video board
AM_RANGE(0x0e800000, 0x0e8fffff) AM_RAM AM_SHARE("bw2_vram")
ADDRESS_MAP_END
static ADDRESS_MAP_START(type1space_s4_map, AS_PROGRAM, 32, sun4_state)
@ -1568,6 +1603,12 @@ static MACHINE_CONFIG_START( sun4c, sun4_state )
MCFG_RS232_RXD_HANDLER(DEVWRITELINE(SCC2_TAG, z80scc_device, rxb_w))
MCFG_RS232_DCD_HANDLER(DEVWRITELINE(SCC2_TAG, z80scc_device, dcdb_w))
MCFG_RS232_CTS_HANDLER(DEVWRITELINE(SCC2_TAG, z80scc_device, ctsb_w))
MCFG_SCREEN_ADD("bwtwo", RASTER)
MCFG_SCREEN_UPDATE_DRIVER(sun4_state, bw2_update)
MCFG_SCREEN_SIZE(1152,900)
MCFG_SCREEN_VISIBLE_AREA(0, 1152-1, 0, 900-1)
MCFG_SCREEN_REFRESH_RATE(72)
MACHINE_CONFIG_END
/*