diff options
author | 2020-03-15 21:43:38 -0400 | |
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committer | 2020-03-15 21:43:38 -0400 | |
commit | 6f3f0b805e77b89887be7b28a54921c1e89e8fb1 (patch) | |
tree | 13cb1a8dc6d30eb0bdbfd284f19ac606e7444f39 | |
parent | 7697fb631eb2e9c506d41b7c897c285dd7e92839 (diff) |
mac: Initial support for the Sigma Designs LaserView monochrome NuBus video card [Al Kossow, R. Belmont]
-rw-r--r-- | scripts/src/bus.lua | 2 | ||||
-rw-r--r-- | src/devices/bus/nubus/laserview.cpp | 209 | ||||
-rw-r--r-- | src/devices/bus/nubus/laserview.h | 50 | ||||
-rw-r--r-- | src/mame/drivers/mac.cpp | 2 |
4 files changed, 263 insertions, 0 deletions
diff --git a/scripts/src/bus.lua b/scripts/src/bus.lua index 3bbda0c8e18..031815ae01e 100644 --- a/scripts/src/bus.lua +++ b/scripts/src/bus.lua @@ -2389,6 +2389,8 @@ if (BUSES["NUBUS"]~=null) then MAME_DIR .. "src/devices/bus/nubus/bootbug.h", MAME_DIR .. "src/devices/bus/nubus/quadralink.cpp", MAME_DIR .. "src/devices/bus/nubus/quadralink.h", + MAME_DIR .. "src/devices/bus/nubus/laserview.cpp", + MAME_DIR .. "src/devices/bus/nubus/laserview.h", MAME_DIR .. "src/devices/bus/nubus/pds30_cb264.cpp", MAME_DIR .. "src/devices/bus/nubus/pds30_cb264.h", MAME_DIR .. "src/devices/bus/nubus/pds30_procolor816.cpp", diff --git a/src/devices/bus/nubus/laserview.cpp b/src/devices/bus/nubus/laserview.cpp new file mode 100644 index 00000000000..e080f4a1276 --- /dev/null +++ b/src/devices/bus/nubus/laserview.cpp @@ -0,0 +1,209 @@ +// license:BSD-3-Clause +// copyright-holders:R. Belmont +/*************************************************************************** + + Sigma Designs fixed-resolution monochrome video card + 1664x1200 or 832x600 according to the ad, can't find the 1664 mode. + + VRAM at Fs000000, mirrored at Fs900000. + Fs0BFFEC: write 0x04 to enable VBL, 0x01 to ack VBL + +***************************************************************************/ + +#include "emu.h" +#include "laserview.h" +#include "screen.h" + +#define LASERVIEW_SCREEN_NAME "laserview_screen" +#define LASERVIEW_ROM_REGION "laserview_rom" + +#define VRAM_SIZE (0x40000) + +ROM_START( laserview ) + ROM_REGION(0x8000, LASERVIEW_ROM_REGION, 0) + ROM_LOAD( "lva-m2-00020_v3.00.bin", 0x000000, 0x008000, CRC(569d1fb7) SHA1(fd505505226abb5fea7c10ed14e8841077ef1be6) ) +ROM_END + +//************************************************************************** +// GLOBAL VARIABLES +//************************************************************************** + +DEFINE_DEVICE_TYPE(NUBUS_LASERVIEW, nubus_laserview_device, "nb_laserview", "Sigma Designs LaserView video card") + + +//------------------------------------------------- +// device_add_mconfig - add device configuration +//------------------------------------------------- + +void nubus_laserview_device::device_add_mconfig(machine_config &config) +{ + screen_device &screen(SCREEN(config, LASERVIEW_SCREEN_NAME, SCREEN_TYPE_RASTER)); + screen.set_screen_update(FUNC(nubus_laserview_device::screen_update)); + screen.set_size(832,600); + screen.set_visarea(0, 832-1, 0, 600-1); + screen.set_refresh_hz(70); +} + +//------------------------------------------------- +// rom_region - device-specific ROM region +//------------------------------------------------- + +const tiny_rom_entry *nubus_laserview_device::device_rom_region() const +{ + return ROM_NAME( laserview ); +} + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// nubus_laserview_device - constructor +//------------------------------------------------- + +nubus_laserview_device::nubus_laserview_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : + nubus_laserview_device(mconfig, NUBUS_LASERVIEW, tag, owner, clock) +{ +} + +nubus_laserview_device::nubus_laserview_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) : + device_t(mconfig, type, tag, owner, clock), + device_nubus_card_interface(mconfig, *this), + m_vbl_disable(0) +{ +} + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void nubus_laserview_device::device_start() +{ + uint32_t slotspace; + + install_declaration_rom(this, LASERVIEW_ROM_REGION, true); + + slotspace = get_slotspace(); + +// printf("[laserview %p] slotspace = %x\n", this, slotspace); + + m_vram.resize(VRAM_SIZE); + install_bank(slotspace, slotspace+VRAM_SIZE-1, "bank_laserview", &m_vram[0]); + install_bank(slotspace+0x900000, slotspace+0x900000+VRAM_SIZE-1, "bank_laserview2", &m_vram[0]); + + nubus().install_device(slotspace+0xB0000, slotspace+0xBFFFF, read32_delegate(*this, FUNC(nubus_laserview_device::regs_r)), write32_delegate(*this, FUNC(nubus_laserview_device::regs_w))); +} + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void nubus_laserview_device::device_reset() +{ + m_vbl_disable = 1; + m_prot_state = 0; + m_toggle = 0; + memset(&m_vram[0], 0, VRAM_SIZE); + + m_palette[0] = rgb_t(255, 255, 255); + m_palette[1] = rgb_t(0, 0, 0); +} + +/*************************************************************************** + + Viking 1024x768 B&W card section + +***************************************************************************/ + +uint32_t nubus_laserview_device::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) +{ + uint32_t *scanline; + int x, y; + uint8_t pixels; + + if (!m_vbl_disable) + { + raise_slot_irq(); + } + + for (y = 0; y < 600; y++) + { + scanline = &bitmap.pix32(y); + for (x = 0; x < 832/8; x++) + { + pixels = m_vram[(y * 104) + (BYTE4_XOR_BE(x)) + 0x20]; + + *scanline++ = m_palette[(pixels>>7)&1]; + *scanline++ = m_palette[(pixels>>6)&1]; + *scanline++ = m_palette[(pixels>>5)&1]; + *scanline++ = m_palette[(pixels>>4)&1]; + *scanline++ = m_palette[(pixels>>3)&1]; + *scanline++ = m_palette[(pixels>>2)&1]; + *scanline++ = m_palette[(pixels>>1)&1]; + *scanline++ = m_palette[(pixels&1)]; + } + } + + return 0; +} + +WRITE32_MEMBER( nubus_laserview_device::regs_w ) +{ +// printf("%08x to regs @ %x mask %08x\n", data, offset, mem_mask); + + switch (offset) + { + case 0x3ffb: + if ((data & 0xff) == 0x04) + { + m_vbl_disable = 0; + } + else if ((data & 0xff) == 01) + { + lower_slot_irq(); + } + else + { + m_vbl_disable = 1; + lower_slot_irq(); + } + break; + } + +} + +READ32_MEMBER( nubus_laserview_device::regs_r ) +{ + //f (offset != 0x3fc1) printf("Read regs_r @ %x mask %08x\n", offset, mem_mask); + + switch (offset) + { + case 0x3fc1: + m_toggle ^= 1; + if (m_toggle) + { + return 0x01010101; + } + else + { + return 0; + } + machine().debug_break(); + break; + + case 0x3fc2: + if (m_prot_state == 0) + { + m_prot_state = 1; + return 0; + } + return 0x02000000; + + case 0x3fff: + m_prot_state = 0; + return 0xfeffffff; + } + + return 0xffffffff; +} + diff --git a/src/devices/bus/nubus/laserview.h b/src/devices/bus/nubus/laserview.h new file mode 100644 index 00000000000..a21a1aeed26 --- /dev/null +++ b/src/devices/bus/nubus/laserview.h @@ -0,0 +1,50 @@ +// license:BSD-3-Clause +// copyright-holders:R. Belmont +#ifndef MAME_BUS_NUBUS_LASERVIEW_H +#define MAME_BUS_NUBUS_LASERVIEW_H + +#pragma once + +#include "nubus.h" + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +// ======================> nubus_laserview_device + +class nubus_laserview_device : + public device_t, + public device_nubus_card_interface +{ +public: + // construction/destruction + nubus_laserview_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); + +protected: + nubus_laserview_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock); + + // device-level overrides + virtual void device_start() override; + virtual void device_reset() override; + + // optional information overrides + virtual void device_add_mconfig(machine_config &config) override; + virtual const tiny_rom_entry *device_rom_region() const override; + +private: + DECLARE_READ32_MEMBER(regs_r); + DECLARE_WRITE32_MEMBER(regs_w); + + uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); + + std::vector<uint8_t> m_vram; + uint32_t m_vbl_disable, m_palette[2]; + int m_prot_state; + int m_toggle; +}; + +// device type definition +DECLARE_DEVICE_TYPE(NUBUS_LASERVIEW, nubus_laserview_device) + +#endif // MAME_BUS_NUBUS_LASERVIEW_H diff --git a/src/mame/drivers/mac.cpp b/src/mame/drivers/mac.cpp index a5d6a74d0a7..3c7d19ef6a7 100644 --- a/src/mame/drivers/mac.cpp +++ b/src/mame/drivers/mac.cpp @@ -73,6 +73,7 @@ #include "bus/nubus/nubus_m2video.h" #include "bus/nubus/bootbug.h" #include "bus/nubus/quadralink.h" +#include "bus/nubus/laserview.h" #include "bus/nubus/pds30_cb264.h" #include "bus/nubus/pds30_procolor816.h" #include "bus/nubus/pds30_sigmalview.h" @@ -881,6 +882,7 @@ static void mac_nubus_cards(device_slot_interface &device) device.option_add("enetnb", NUBUS_APPLEENET); /* Apple NuBus Ethernet */ device.option_add("bootbug", NUBUS_BOOTBUG); /* Brigent BootBug debugger card */ device.option_add("quadralink", NUBUS_QUADRALINK); /* AE Quadralink serial card */ + device.option_add("laserview", NUBUS_LASERVIEW); /* Sigma Designs LaserView monochrome video card */ } static void mac_pds030_cards(device_slot_interface &device) |