summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/bus/pci/promotion.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/devices/bus/pci/promotion.cpp')
-rw-r--r--src/devices/bus/pci/promotion.cpp153
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);
+ }
+}