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vis: wip (nw)

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This commit is contained in:
cracyc 2016-09-17 22:02:49 -05:00
parent a7d6a15538
commit be9b9810d6
1 changed files with 49 additions and 2 deletions
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51
src/mame/drivers/vis.cpp
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@ -13,11 +13,13 @@ public:
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_mb(*this, "mb"),
m_pic1(*this, "mb:pic8259_slave")
m_pic1(*this, "mb:pic8259_slave"),
m_vga(*this, "vga")
{ }
required_device<cpu_device> m_maincpu;
required_device<at_mb_device> m_mb;
required_device<pic8259_device> m_pic1;
required_device<vga_device> m_vga;
DECLARE_READ8_MEMBER(sysctl_r);
DECLARE_WRITE8_MEMBER(sysctl_w);
@ -27,6 +29,8 @@ public:
DECLARE_READ8_MEMBER(unk3_r);
DECLARE_READ8_MEMBER(pad_r);
DECLARE_WRITE8_MEMBER(pad_w);
DECLARE_READ8_MEMBER(vga_r);
DECLARE_WRITE8_MEMBER(vga_w);
protected:
void machine_reset() override;
private:
@ -34,6 +38,8 @@ private:
UINT8 m_unkidx;
UINT8 m_unk[16];
UINT8 m_pad[4];
UINT8 m_crtcidx;
UINT8 m_gfxidx;
};
void vis_state::machine_reset()
@ -88,6 +94,45 @@ WRITE8_MEMBER(vis_state::pad_w)
m_pad[offset] = data;
}
READ8_MEMBER(vis_state::vga_r)
{
if(offset < 0x10)
return m_vga->port_03b0_r(space, offset, mem_mask);
else if(offset < 0x20)
return m_vga->port_03c0_r(space, offset - 0x10, mem_mask);
else
return m_vga->port_03d0_r(space, offset - 0x20, mem_mask);
}
WRITE8_MEMBER(vis_state::vga_w)
{
switch(offset)
{
case 0x1e:
m_gfxidx = data;
break;
case 0x1f:
if(m_gfxidx == 0x05)
data |= 0x40;
break;
case 0x04:
case 0x24:
m_crtcidx = data;
break;
case 0x05:
case 0x25:
if(m_crtcidx == 0x14)
data |= 0x40;
break;
}
if(offset < 0x10)
m_vga->port_03b0_w(space, offset, data, mem_mask);
else if(offset < 0x20)
m_vga->port_03c0_w(space, offset - 0x10, data, mem_mask);
else
m_vga->port_03d0_w(space, offset - 0x20, data, mem_mask);
}
READ8_MEMBER(vis_state::sysctl_r)
{
return m_sysctl;
@ -104,6 +149,7 @@ WRITE8_MEMBER(vis_state::sysctl_w)
static ADDRESS_MAP_START( at16_map, AS_PROGRAM, 16, vis_state )
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x000000, 0x09ffff) AM_RAM
AM_RANGE(0x0a0000, 0x0bffff) AM_DEVREADWRITE8("vga", vga_device, mem_r, mem_w, 0xffff)
AM_RANGE(0x0d8000, 0x0fffff) AM_ROM AM_REGION("bios", 0xd8000)
AM_RANGE(0x100000, 0x15ffff) AM_RAM
AM_RANGE(0x300000, 0x3fffff) AM_ROM AM_REGION("bios", 0)
@ -118,6 +164,7 @@ static ADDRESS_MAP_START( at16_io, AS_IO, 16, vis_state )
AM_RANGE(0x0000, 0x00ff) AM_DEVICE("mb", at_mb_device, map)
AM_RANGE(0x023c, 0x023f) AM_READWRITE8(pad_r, pad_w, 0xffff)
AM_RANGE(0x031a, 0x031b) AM_READ8(unk3_r, 0x00ff)
AM_RANGE(0x03b0, 0x03df) AM_READWRITE8(vga_r, vga_w, 0xffff)
ADDRESS_MAP_END
static MACHINE_CONFIG_START( vis, vis_state )
@ -130,8 +177,8 @@ static MACHINE_CONFIG_START( vis, vis_state )
MCFG_DEVICE_ADD("mb", AT_MB, 0)
MCFG_ISA16_SLOT_ADD("mb:isabus","vga", pc_isa16_cards, "clgd542x", true)
MCFG_ISA16_SLOT_ADD("mb:isabus","mcd", pc_isa16_cards, "mcd", true)
MCFG_FRAGMENT_ADD(pcvideo_vga)
MACHINE_CONFIG_END
ROM_START(vis)