diff options
Diffstat (limited to 'src/devices/bus/pci/promotion.cpp')
-rw-r--r-- | src/devices/bus/pci/promotion.cpp | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/src/devices/bus/pci/promotion.cpp b/src/devices/bus/pci/promotion.cpp new file mode 100644 index 00000000000..68396af870b --- /dev/null +++ b/src/devices/bus/pci/promotion.cpp @@ -0,0 +1,153 @@ +// license:BSD-3-Clause +// copyright-holders: +/************************************************************************************************** + +Alliance Semiconductor ProMotion family + +- aT3D is the 2d base of 3dfx Voodoo Rush on Hercules Stingray 128/3D cards at least + (thru THP i/f, reportedly slow) +- On its own aT3D is infamously known to be a terrible 3D card + cfr. https://www.youtube.com/watch?v=vCz-rSlSREA + +TODO: +- Requires own family of VGA based devices; +- Catch is that said device mirrors the PCI space in memory mapped regs, along with the + (more or less) typical SVGA regs of the mid-90s; +- Black screens when mounted; +- Bare documentation, covering pinout and register names only. aT3D datasheet available for +crosschecking; + +**************************************************************************************************/ + +#include "emu.h" +#include "promotion.h" + +#define LOG_WARN (1U << 1) + +#define VERBOSE (LOG_GENERAL | LOG_WARN) +//#define LOG_OUTPUT_FUNC osd_printf_info +#include "logmacro.h" + +#define LOGWARN(...) LOGMASKED(LOG_WARN, __VA_ARGS__) + + +DEFINE_DEVICE_TYPE(PROMOTION3210, promotion3210_device, "promotion3210", "Alliance Semiconductor ProMotion 3210") +//DEFINE_DEVICE_TYPE(PROMOTION6410, promotion6410_device, "promotion6410", "Alliance Semiconductor ProMotion 6410") +//DEFINE_DEVICE_TYPE(PROMOTION6422, promotion6422_device, "promotion6422", "Alliance Semiconductor ProMotion 6422") +//DEFINE_DEVICE_TYPE(PROMOTION6424, promotion6424_device, "promotion6424", "Alliance Semiconductor ProMotion 6424") +// Alias of above? +//DEFINE_DEVICE_TYPE(PROMOTIONAT24, promotionat24_device, "promotionat24", "Alliance Semiconductor ProMotion aT24") +//DEFINE_DEVICE_TYPE(PROMOTIONAT3D, promotionat3d_device, "promotionat3d", "Alliance Semiconductor ProMotion aT3D") +//DEFINE_DEVICE_TYPE(PROMOTIONAT25, promotionat25_device, "promotionat25", "Alliance Semiconductor ProMotion aT25") + + +promotion3210_device::promotion3210_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) + : pci_card_device(mconfig, type, tag, owner, clock) + , m_vga(*this, "vga") + , m_vga_rom(*this, "vga_rom") +{ + // vendor ID 0x1142 Alliance Semiconductor Corporation + // subvendor unknown + set_ids(0x11423210, 0x00, 0x030000, 0x11423210); +} + +promotion3210_device::promotion3210_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) + : promotion3210_device(mconfig, PROMOTION3210, tag, owner, clock) +{ +} + +ROM_START( promotion3210 ) + ROM_REGION32_LE( 0x8000, "vga_rom", ROMREGION_ERASEFF ) + ROM_SYSTEM_BIOS( 0, "miro", "miro Video 12PD" ) + ROMX_LOAD( "mirovideo12pd.vbi", 0x0000, 0x8000, CRC(46041709) SHA1(bd43f05ae7ddb4bbf515132b72b32719b60e6950), ROM_BIOS(0) ) +ROM_END + +const tiny_rom_entry *promotion3210_device::device_rom_region() const +{ + return ROM_NAME(promotion3210); +} + +void promotion3210_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(m_vga, FUNC(vga_device::screen_update)); + + PROMOTION_VGA(config, m_vga, 0); + m_vga->set_screen("screen"); + // TODO: configurable between 1 and 4 MB (2x EDO slots on board) + // Only known OEM Board (Miro) has 1MB + m_vga->set_vram_size(1*1024*1024); + + // AT&T ATT20C408-13 PrecisionDAC + // Reused by ATI Mach64? +} + +void promotion3210_device::device_start() +{ + pci_card_device::device_start(); + + add_map( 4*1024*1024, M_MEM, FUNC(promotion3210_device::vram_aperture_map)); + + add_rom((u8 *)m_vga_rom->base(), 0x8000); + expansion_rom_base = 0xc0000; + + // INTA# + intr_pin = 1; +} + +void promotion3210_device::device_reset() +{ + pci_card_device::device_reset(); + + // TODO: to be checked + command = 0x0000; + status = 0x0000; + command_mask = 0x23; + + remap_cb(); +} + +// bare mapping, except for stuff being mirrored at memory-mapped offsets +void promotion3210_device::config_map(address_map &map) +{ + pci_card_device::config_map(map); +} + +void promotion3210_device::vram_aperture_map(address_map &map) +{ + +} + +// TODO: this should really be a subclass of VGA +void promotion3210_device::legacy_memory_map(address_map &map) +{ + map(0xa0000, 0xbffff).rw(FUNC(promotion3210_device::vram_r), FUNC(promotion3210_device::vram_w)); +} + +void promotion3210_device::legacy_io_map(address_map &map) +{ + map(0, 0x02f).m(m_vga, FUNC(vga_device::io_map)); +} + +uint8_t promotion3210_device::vram_r(offs_t offset) +{ + return downcast<vga_device *>(m_vga.target())->mem_r(offset); +} + +void promotion3210_device::vram_w(offs_t offset, uint8_t data) +{ + downcast<vga_device *>(m_vga.target())->mem_w(offset, data); +} + +void promotion3210_device::map_extra(uint64_t memory_window_start, uint64_t memory_window_end, uint64_t memory_offset, address_space *memory_space, + uint64_t io_window_start, uint64_t io_window_end, uint64_t io_offset, address_space *io_space) +{ +// if (1) + { + memory_space->install_readwrite_handler(0xa0000, 0xbffff, read8sm_delegate(*this, FUNC(promotion3210_device::vram_r)), write8sm_delegate(*this, FUNC(promotion3210_device::vram_w))); + + io_space->install_device(0x03b0, 0x03df, *this, &promotion3210_device::legacy_io_map); + //memory_space->install_rom(0xc0000, 0xcffff, (void *)expansion_rom); + } +} |