// license:BSD-3-Clause // copyright-holders:Barry Rodewald /*************************************************************************** ISA VGA wrapper ***************************************************************************/ #include "emu.h" #include "vga.h" #include "video/pc_vga.h" #include "screen.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 //************************************************************************** DEFINE_DEVICE_TYPE(ISA8_VGA, isa8_vga_device, "ibm_vga", "IBM VGA Graphics Card") //------------------------------------------------- // device_add_mconfig - add device configuration //------------------------------------------------- void isa8_vga_device::device_add_mconfig(machine_config &config) { screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); screen.set_raw(XTAL(25'174'800), 900, 0, 640, 526, 0, 480); screen.set_screen_update("vga", FUNC(vga_device::screen_update)); VGA(config, "vga", 0).set_screen("screen"); } //------------------------------------------------- // rom_region - device-specific ROM region //------------------------------------------------- const tiny_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_t clock) : device_t(mconfig, ISA8_VGA, tag, owner, clock), device_isa8_card_interface(mconfig, *this), m_vga(nullptr) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- READ8_MEMBER( isa8_vga_device::input_port_0_r ) { return 0xff; } //return machine().root_device().ioport("IN0")->read(); } void isa8_vga_device::device_start() { set_isa_device(); m_vga = subdevice("vga"); m_isa->install_rom(this, 0xc0000, 0xc7fff, "ibm_vga", "ibm_vga"); m_isa->install_device(0x3b0, 0x3bf, 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, 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, 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, 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() { }