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Diffstat (limited to 'src/devices/bus/nubus/nubus_radiustpd.c')
-rw-r--r--src/devices/bus/nubus/nubus_radiustpd.c214
1 files changed, 214 insertions, 0 deletions
diff --git a/src/devices/bus/nubus/nubus_radiustpd.c b/src/devices/bus/nubus/nubus_radiustpd.c
new file mode 100644
index 00000000000..3b30fc4a384
--- /dev/null
+++ b/src/devices/bus/nubus/nubus_radiustpd.c
@@ -0,0 +1,214 @@
+// license:BSD-3-Clause
+// copyright-holders:R. Belmont
+/***************************************************************************
+
+ Radius Two Page Display (1280x960?)
+
+ Fsx8000a = DAC data
+ Fsx8000e = DAC control
+ Fsx00000 = VRAM (offset 0x200, stride 0x1b0)
+
+***************************************************************************/
+
+#include "emu.h"
+#include "nubus_radiustpd.h"
+
+#define RADIUSTPD_SCREEN_NAME "tpd_screen"
+#define RADIUSTPD_ROM_REGION "tpd_rom"
+
+#define VRAM_SIZE (0x40000) // 256k. 1152x880 1 bit per pixel fits nicely.
+
+MACHINE_CONFIG_FRAGMENT( radiustpd )
+ MCFG_SCREEN_ADD( RADIUSTPD_SCREEN_NAME, RASTER)
+ MCFG_SCREEN_UPDATE_DEVICE(DEVICE_SELF, nubus_radiustpd_device, screen_update)
+ MCFG_SCREEN_SIZE(1280, 960)
+ MCFG_SCREEN_REFRESH_RATE(70)
+ MCFG_SCREEN_VISIBLE_AREA(0, 1152-1, 0, 880-1)
+MACHINE_CONFIG_END
+
+ROM_START( radiustpd )
+ ROM_REGION(0x8000, RADIUSTPD_ROM_REGION, 0)
+ ROM_LOAD( "tpd_v22.bin", 0x0000, 0x8000, CRC(7dc5ed05) SHA1(4abb64e49201e966c17a255a94b670564b229934) )
+ROM_END
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+const device_type NUBUS_RADIUSTPD = &device_creator<nubus_radiustpd_device>;
+
+
+//-------------------------------------------------
+// machine_config_additions - device-specific
+// machine configurations
+//-------------------------------------------------
+
+machine_config_constructor nubus_radiustpd_device::device_mconfig_additions() const
+{
+ return MACHINE_CONFIG_NAME( radiustpd );
+}
+
+//-------------------------------------------------
+// rom_region - device-specific ROM region
+//-------------------------------------------------
+
+const rom_entry *nubus_radiustpd_device::device_rom_region() const
+{
+ return ROM_NAME( radiustpd );
+}
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// nubus_radiustpd_device - constructor
+//-------------------------------------------------
+
+nubus_radiustpd_device::nubus_radiustpd_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, NUBUS_RADIUSTPD, "Radius Two Page Display video card", tag, owner, clock, "nb_rtpd", __FILE__),
+ device_video_interface(mconfig, *this),
+ device_nubus_card_interface(mconfig, *this)
+{
+ m_assembled_tag = std::string(tag).append(":").append(RADIUSTPD_SCREEN_NAME);
+ m_screen_tag = m_assembled_tag.c_str();
+}
+
+nubus_radiustpd_device::nubus_radiustpd_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source) :
+ device_t(mconfig, type, name, tag, owner, clock, shortname, source),
+ device_video_interface(mconfig, *this),
+ device_nubus_card_interface(mconfig, *this)
+{
+ m_assembled_tag = std::string(tag).append(":").append(RADIUSTPD_SCREEN_NAME);
+ m_screen_tag = m_assembled_tag.c_str();
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void nubus_radiustpd_device::device_start()
+{
+ UINT32 slotspace;
+
+ // set_nubus_device makes m_slot valid
+ set_nubus_device();
+ install_declaration_rom(this, RADIUSTPD_ROM_REGION, true, true);
+
+ slotspace = get_slotspace();
+
+ printf("[radiustpd %p] slotspace = %x\n", (void *)this, slotspace);
+
+ m_vram.resize(VRAM_SIZE);
+ m_vram32 = (UINT32 *)&m_vram[0];
+
+ m_nubus->install_device(slotspace, slotspace+VRAM_SIZE-1, read32_delegate(FUNC(nubus_radiustpd_device::vram_r), this), write32_delegate(FUNC(nubus_radiustpd_device::vram_w), this));
+ m_nubus->install_device(slotspace+0x900000, slotspace+VRAM_SIZE-1+0x900000, read32_delegate(FUNC(nubus_radiustpd_device::vram_r), this), write32_delegate(FUNC(nubus_radiustpd_device::vram_w), this));
+ m_nubus->install_device(slotspace+0x80000, slotspace+0xeffff, read32_delegate(FUNC(nubus_radiustpd_device::radiustpd_r), this), write32_delegate(FUNC(nubus_radiustpd_device::radiustpd_w), this));
+ m_nubus->install_device(slotspace+0x980000, slotspace+0x9effff, read32_delegate(FUNC(nubus_radiustpd_device::radiustpd_r), this), write32_delegate(FUNC(nubus_radiustpd_device::radiustpd_w), this));
+
+ m_timer = timer_alloc(0, NULL);
+ m_timer->adjust(m_screen->time_until_pos(479, 0), 0);
+}
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void nubus_radiustpd_device::device_reset()
+{
+ m_count = 0;
+ m_clutoffs = 0;
+ m_vbl_disable = 1;
+ m_mode = 0;
+ memset(&m_vram[0], 0, VRAM_SIZE);
+ memset(m_palette, 0, sizeof(m_palette));
+
+ m_palette[1] = rgb_t(255, 255, 255);
+ m_palette[0] = rgb_t(0, 0, 0);
+}
+
+
+void nubus_radiustpd_device::device_timer(emu_timer &timer, device_timer_id tid, int param, void *ptr)
+{
+ if (!m_vbl_disable)
+ {
+ raise_slot_irq();
+ }
+
+ m_timer->adjust(m_screen->time_until_pos(479, 0), 0);
+}
+
+/***************************************************************************
+
+ Two Page Display section
+
+***************************************************************************/
+
+UINT32 nubus_radiustpd_device::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
+{
+ UINT32 *scanline;
+ int x, y;
+ UINT8 pixels, *vram;
+
+ vram = &m_vram[0x200];
+
+ for (y = 0; y < 880; y++)
+ {
+ scanline = &bitmap.pix32(y);
+ for (x = 0; x < 1152/8; x++)
+ {
+ pixels = vram[(y * (1152/8)) + (BYTE4_XOR_BE(x))];
+
+ *scanline++ = m_palette[((pixels>>7)&0x1)];
+ *scanline++ = m_palette[((pixels>>6)&0x1)];
+ *scanline++ = m_palette[((pixels>>5)&0x1)];
+ *scanline++ = m_palette[((pixels>>4)&0x1)];
+ *scanline++ = m_palette[((pixels>>3)&0x1)];
+ *scanline++ = m_palette[((pixels>>2)&0x1)];
+ *scanline++ = m_palette[((pixels>>1)&0x1)];
+ *scanline++ = m_palette[(pixels&1)];
+ }
+ }
+
+ return 0;
+}
+
+WRITE32_MEMBER( nubus_radiustpd_device::radiustpd_w )
+{
+// printf("TPD: write %08x to %x, mask %08x\n", data, offset, mem_mask);
+}
+
+READ32_MEMBER( nubus_radiustpd_device::radiustpd_r )
+{
+// printf("TPD: read @ %x, mask %08x\n", offset, mem_mask);
+
+ if (offset == 0)
+ {
+ lower_slot_irq();
+ m_vbl_disable = true;
+ }
+
+ if (offset == 0x8000)
+ {
+ m_vbl_disable = false;
+ }
+
+ if (offset == 0x18000)
+ {
+ return 0xffffffff;
+ }
+
+ return 0;
+}
+
+WRITE32_MEMBER( nubus_radiustpd_device::vram_w )
+{
+ data ^= 0xffffffff;
+ COMBINE_DATA(&m_vram32[offset]);
+}
+
+READ32_MEMBER( nubus_radiustpd_device::vram_r )
+{
+ return m_vram32[offset] ^ 0xffffffff;
+}