diff options
Diffstat (limited to 'src/devices/bus/isa/vga.c')
-rw-r--r-- | src/devices/bus/isa/vga.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/src/devices/bus/isa/vga.c b/src/devices/bus/isa/vga.c new file mode 100644 index 00000000000..8b52309b31f --- /dev/null +++ b/src/devices/bus/isa/vga.c @@ -0,0 +1,84 @@ +// license:BSD-3-Clause +// copyright-holders:Barry Rodewald +/*************************************************************************** + + ISA VGA wrapper + +***************************************************************************/ + +#include "emu.h" +#include "vga.h" +#include "video/pc_vga.h" + +ROM_START( ibm_vga ) + ROM_REGION(0x8000,"ibm_vga", 0) + ROM_LOAD("ibm-vga.bin", 0x00000, 0x8000, BAD_DUMP CRC(74e3fadb) SHA1(dce6491424f1726203776dfae9a967a98a4ba7b5) ) +ROM_END + +//************************************************************************** +// GLOBAL VARIABLES +//************************************************************************** + +const device_type ISA8_VGA = &device_creator<isa8_vga_device>; + + +//------------------------------------------------- +// machine_config_additions - device-specific +// machine configurations +//------------------------------------------------- + +machine_config_constructor isa8_vga_device::device_mconfig_additions() const +{ + return MACHINE_CONFIG_NAME( pcvideo_vga ); +} + +//------------------------------------------------- +// rom_region - device-specific ROM region +//------------------------------------------------- + +const rom_entry *isa8_vga_device::device_rom_region() const +{ + return ROM_NAME( ibm_vga ); +} + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// isa8_vga_device - constructor +//------------------------------------------------- + +isa8_vga_device::isa8_vga_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, ISA8_VGA, "IBM VGA Graphics Card", tag, owner, clock, "ibm_vga", __FILE__), + device_isa8_card_interface(mconfig, *this) +{ +} + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- +READ8_MEMBER( isa8_vga_device::input_port_0_r ) { return 0xff; } //return space.machine().root_device().ioport("IN0")->read(); } + +void isa8_vga_device::device_start() +{ + set_isa_device(); + + m_vga = subdevice<vga_device>("vga"); + + m_isa->install_rom(this, 0xc0000, 0xc7fff, 0, 0, "ibm_vga", "ibm_vga"); + + m_isa->install_device(0x3b0, 0x3bf, 0, 0, read8_delegate(FUNC(vga_device::port_03b0_r),m_vga), write8_delegate(FUNC(vga_device::port_03b0_w),m_vga)); + m_isa->install_device(0x3c0, 0x3cf, 0, 0, read8_delegate(FUNC(vga_device::port_03c0_r),m_vga), write8_delegate(FUNC(vga_device::port_03c0_w),m_vga)); + m_isa->install_device(0x3d0, 0x3df, 0, 0, read8_delegate(FUNC(vga_device::port_03d0_r),m_vga), write8_delegate(FUNC(vga_device::port_03d0_w),m_vga)); + + m_isa->install_memory(0xa0000, 0xbffff, 0, 0, read8_delegate(FUNC(vga_device::mem_r),m_vga), write8_delegate(FUNC(vga_device::mem_w),m_vga)); +} + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void isa8_vga_device::device_reset() +{ +} |