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author angelosa <lordkale4@gmail.com>2024-11-17 14:49:13 +0100
committer angelosa <lordkale4@gmail.com>2024-11-17 19:02:04 +0100
commit2950b39bc712ea2afe43cc456fd34abe95113daf (patch)
tree6fdca574d776d26e55e57968d5fb7d20d8202628 /src/devices/bus
parent40d8c5c343efc497524832d59a6d0e2b8e59376b (diff)
video/pc_vga_tseng: stub ACL/MMU infrastracture
Diffstat (limited to 'src/devices/bus')
-rw-r--r--src/devices/bus/isa/svga_tseng.cpp8
1 files changed, 6 insertions, 2 deletions
diff --git a/src/devices/bus/isa/svga_tseng.cpp b/src/devices/bus/isa/svga_tseng.cpp
index 5aafc957f17..7dee75b727a 100644
--- a/src/devices/bus/isa/svga_tseng.cpp
+++ b/src/devices/bus/isa/svga_tseng.cpp
@@ -201,16 +201,20 @@ void isa16_svga_et4k_w32i_device::remap(int space_id, offs_t start, offs_t end)
if (space_id == AS_PROGRAM)
{
m_isa->install_memory(0xa0000, 0xbffff, read8sm_delegate(*m_vga, FUNC(tseng_vga_device::mem_r)), write8sm_delegate(*m_vga, FUNC(tseng_vga_device::mem_w)));
+ // TODO: can be disabled or narrowed thru TS Auxiliary Mode
m_isa->install_rom(this, 0xc0000, 0xc7fff, "vga_rom");
}
else if (space_id == AS_IO)
{
- m_isa->install_device(0x03b0, 0x03df, *this, &isa16_svga_et4k_w32i_device::io_isa_map);
+ m_isa->install_device(0x0000, 0xffff, *this, &isa16_svga_et4k_w32i_device::io_isa_map);
}
}
void isa16_svga_et4k_w32i_device::io_isa_map(address_map &map)
{
- map(0x00, 0x2f).m(m_vga, FUNC(tseng_vga_device::io_map));
+ map(0x03b0, 0x03df).m(m_vga, FUNC(et4kw32i_vga_device::io_map));
+ // IOD controls mirroring
+ map(0x210a, 0x210a).mirror(0x70).rw(m_vga, FUNC(et4kw32i_vga_device::acl_index_r), FUNC(et4kw32i_vga_device::acl_index_w));
+ map(0x210b, 0x210b).mirror(0x70).rw(m_vga, FUNC(et4kw32i_vga_device::acl_data_r), FUNC(et4kw32i_vga_device::acl_data_w));
}