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author mooglyguy <therealmogminer@gmail.com>2020-03-01 13:18:32 +0100
committer mooglyguy <therealmogminer@gmail.com>2020-03-01 13:20:42 +0100
commitd808dd967a60336c67681189f5205cc18c869474 (patch)
tree944b969600fc32c52261703da0e412d2b12b4d4e
parentbb01fc2a81ddabbf4c860232ae5c431f7482401f (diff)
-ex1280: Added skeleton device for Vectrix EX1280 ISA card. [Ryan Holtz, Bitsavers]
-rw-r--r--scripts/src/bus.lua2
-rw-r--r--src/devices/bus/isa/ex1280.cpp216
-rw-r--r--src/devices/bus/isa/ex1280.h62
-rw-r--r--src/devices/bus/isa/isa_cards.cpp2
4 files changed, 282 insertions, 0 deletions
diff --git a/scripts/src/bus.lua b/scripts/src/bus.lua
index 7bfef275e8b..9aa8111eb51 100644
--- a/scripts/src/bus.lua
+++ b/scripts/src/bus.lua
@@ -1426,6 +1426,8 @@ if (BUSES["ISA"]~=null) then
MAME_DIR .. "src/devices/bus/isa/svga_cirrus.h",
MAME_DIR .. "src/devices/bus/isa/ega.cpp",
MAME_DIR .. "src/devices/bus/isa/ega.h",
+ MAME_DIR .. "src/devices/bus/isa/ex1280.cpp",
+ MAME_DIR .. "src/devices/bus/isa/ex1280.h",
MAME_DIR .. "src/devices/bus/isa/pgc.cpp",
MAME_DIR .. "src/devices/bus/isa/pgc.h",
MAME_DIR .. "src/devices/bus/isa/vga.cpp",
diff --git a/src/devices/bus/isa/ex1280.cpp b/src/devices/bus/isa/ex1280.cpp
new file mode 100644
index 00000000000..393f40fb51d
--- /dev/null
+++ b/src/devices/bus/isa/ex1280.cpp
@@ -0,0 +1,216 @@
+// license:BSD-3-Clause
+// copyright-holders:Ryan Holtz
+
+#include "emu.h"
+#include "ex1280.h"
+
+
+DEFINE_DEVICE_TYPE(ISA16_EX1280, isa16_ex1280_device, "ex1280", "Vectrix EX1280")
+
+//-------------------------------------------------
+// isa16_ex1280_device - constructor
+//-------------------------------------------------
+
+isa16_ex1280_device::isa16_ex1280_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
+ : device_t(mconfig, ISA16_EX1280, tag, owner, clock)
+ , device_isa16_card_interface(mconfig, *this)
+ , m_cpu(*this, "maincpu")
+ , m_ramdac(*this, "ramdac")
+ , m_screen(*this, "screen")
+{
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void isa16_ex1280_device::device_start()
+{
+ set_isa_device();
+
+ save_item(NAME(m_flags));
+}
+
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void isa16_ex1280_device::device_reset()
+{
+ m_vram.clear();
+ m_vram.resize(0xa00000);
+ m_flags = 0x0002;
+}
+
+
+//-------------------------------------------------
+// main_map - memory map for the card's TMS34010
+//-------------------------------------------------
+
+void isa16_ex1280_device::main_map(address_map &map)
+{
+ map(0x00000000, 0x009fffff).rw(FUNC(isa16_ex1280_device::vram_r), FUNC(isa16_ex1280_device::vram_w));
+ map(0x04000000, 0x04000fff).rw(FUNC(isa16_ex1280_device::regs_r), FUNC(isa16_ex1280_device::regs_w));
+ map(0xfff00000, 0xfffbffff).ram();
+ map(0xfffc0000, 0xffffffff).rom().region("ex1280", 0);
+}
+
+
+//-------------------------------------------------
+// device_add_mconfig - add device configuration
+//-------------------------------------------------
+
+void isa16_ex1280_device::device_add_mconfig(machine_config &config)
+{
+ TMS34010(config, m_cpu, 64000000);
+ m_cpu->set_addrmap(AS_PROGRAM, &isa16_ex1280_device::main_map);
+ m_cpu->set_halt_on_reset(false);
+ m_cpu->set_pixel_clock(64000000);
+ m_cpu->set_pixels_per_clock(1);
+ m_cpu->set_scanline_rgb32_callback(FUNC(isa16_ex1280_device::scanline_update));
+ m_cpu->set_shiftreg_in_callback(FUNC(isa16_ex1280_device::to_shiftreg)); /* write to shiftreg function */
+ m_cpu->set_shiftreg_out_callback(FUNC(isa16_ex1280_device::from_shiftreg)); /* read from shiftreg function */
+ m_cpu->set_screen(m_screen);
+
+ SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
+ m_screen->set_refresh_hz(60);
+ m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(2500)); // Not accurate
+ m_screen->set_size(640, 480);
+ m_screen->set_visarea(0, 640-1, 0, 480-1);
+ m_screen->set_screen_update(m_cpu, FUNC(tms34010_device::tms340x0_rgb32));
+ m_screen->screen_vblank().set(FUNC(isa16_ex1280_device::vblank_w));
+
+ BT451(config, m_ramdac, 0);
+}
+
+
+//-------------------------------------------------
+// regs_r - register read handler
+//-------------------------------------------------
+
+READ16_MEMBER(isa16_ex1280_device::regs_r)
+{
+ uint16_t data = 0;
+ if (offset == 0)
+ {
+ data = m_flags;
+ }
+ else if (offset == 4)
+ {
+ data = 0x0000;
+ }
+ logerror("%s: regs_r: %08x: %04x & %04x\n", machine().describe_context(), 0x04000000 | (offset << 1), data, mem_mask);
+ return data;
+}
+
+
+//-------------------------------------------------
+// regs_w - register write handler
+//-------------------------------------------------
+
+WRITE16_MEMBER(isa16_ex1280_device::regs_w)
+{
+ logerror("%s: regs_w: %08x = %04x & %04x\n", machine().describe_context(), 0x04000000 | (offset << 1), data, mem_mask);
+}
+
+
+//-------------------------------------------------
+// vram_r - VRAM direct read handler
+//-------------------------------------------------
+
+READ16_MEMBER(isa16_ex1280_device::vram_r)
+{
+ logerror("vram_r: %08x = %04x\n", offset, m_vram[offset]);
+ return m_vram[offset];
+}
+
+
+//-------------------------------------------------
+// vram_r - VRAM direct write handler
+//-------------------------------------------------
+
+WRITE16_MEMBER(isa16_ex1280_device::vram_w)
+{
+ logerror("vram_r: %08x = %04x & %04x\n", offset, data, mem_mask);
+ COMBINE_DATA(&m_vram[offset]);
+}
+
+
+//-------------------------------------------------
+// scanline_update -
+//-------------------------------------------------
+
+TMS340X0_SCANLINE_RGB32_CB_MEMBER(isa16_ex1280_device::scanline_update)
+{
+ uint16_t *src = &m_vram[params->rowaddr << 8];
+ uint32_t *dest = &bitmap.pix32(scanline);
+ const pen_t *pens = m_ramdac->pens();
+ int coladdr = params->coladdr << 1;
+
+ /* copy the non-blanked portions of this scanline */
+ for (int x = params->heblnk; x < params->hsblnk; x += 4)
+ {
+ uint16_t pixels = src[coladdr++];
+ dest[x + 0] = pens[pixels & 0x0f];
+ dest[x + 1] = pens[(pixels >> 4) & 0x0f];
+ dest[x + 2] = pens[(pixels >> 8) & 0x0f];
+ dest[x + 3] = pens[(pixels >> 12) & 0x0f];
+ }
+}
+
+
+//-------------------------------------------------
+// to_shiftreg - handle VRAM->TMS shift register
+//-------------------------------------------------
+
+TMS340X0_TO_SHIFTREG_CB_MEMBER(isa16_ex1280_device::to_shiftreg)
+{
+ printf("address to shiftreg: %08x\n", address);
+ if (address < 0xa00000)
+ {
+ memcpy(shiftreg, &m_vram[address >> 4], 0x400);
+ }
+}
+
+
+//---------------------------------------------------
+// from_shiftreg - handle TMS shift register->VRAM
+//---------------------------------------------------
+
+TMS340X0_FROM_SHIFTREG_CB_MEMBER(isa16_ex1280_device::from_shiftreg)
+{
+ printf("address from shiftreg: %08x\n", address);
+ if (address < 0xa00000)
+ {
+ memcpy(&m_vram[address >> 4], shiftreg, 0x400);
+ }
+}
+
+
+//-------------------------------------------------
+// vblank_w - toggle vblank bit(?)
+//-------------------------------------------------
+
+WRITE_LINE_MEMBER(isa16_ex1280_device::vblank_w)
+{
+ //m_flags &= ~(1 << 1);
+ //m_flags |= (state << 1);
+}
+
+
+//-------------------------------------------------
+// rom_region - device-specific ROM region
+//-------------------------------------------------
+
+ROM_START( ex1280 )
+ ROM_REGION16_LE(0x8000, "ex1280", 0)
+ ROM_LOAD16_BYTE("hbv10lo.bin", 0x0000, 0x4000, CRC(4de578b8) SHA1(cd7bc7859dd44f978adca7506afb0a1a73cb1121) )
+ ROM_LOAD16_BYTE("hbv10hi.bin", 0x0001, 0x4000, CRC(b87caa0c) SHA1(88c19cf36cb98e59810dad2a2f1f0e6c884cd7eb) )
+ROM_END
+
+const tiny_rom_entry *isa16_ex1280_device::device_rom_region() const
+{
+ return ROM_NAME( ex1280 );
+}
diff --git a/src/devices/bus/isa/ex1280.h b/src/devices/bus/isa/ex1280.h
new file mode 100644
index 00000000000..ebc18722ea2
--- /dev/null
+++ b/src/devices/bus/isa/ex1280.h
@@ -0,0 +1,62 @@
+// license:BSD-3-Clause
+// copyright-holders:Ryan Holtz
+#ifndef MAME_BUS_ISA_EX1280_H
+#define MAME_BUS_ISA_EX1280_H
+
+#pragma once
+
+#include "isa.h"
+#include "cpu/tms34010/tms34010.h"
+#include "video/bt45x.h"
+#include "screen.h"
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> isa16_ex1280_device
+
+class isa16_ex1280_device : public device_t,
+ public device_isa16_card_interface
+{
+public:
+ // construction/destruction
+ isa16_ex1280_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+ // Flag non working features
+ static constexpr feature_type unemulated_features() { return feature::GRAPHICS | feature::PALETTE; }
+
+protected:
+ // 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;
+
+ DECLARE_READ16_MEMBER(vram_r);
+ DECLARE_WRITE16_MEMBER(vram_w);
+ DECLARE_READ16_MEMBER(regs_r);
+ DECLARE_WRITE16_MEMBER(regs_w);
+ DECLARE_WRITE_LINE_MEMBER(vblank_w);
+
+ required_device<tms34010_device> m_cpu;
+ required_device<bt451_device> m_ramdac;
+ required_device<screen_device> m_screen;
+
+ TMS340X0_TO_SHIFTREG_CB_MEMBER(to_shiftreg);
+ TMS340X0_FROM_SHIFTREG_CB_MEMBER(from_shiftreg);
+ TMS340X0_SCANLINE_RGB32_CB_MEMBER(scanline_update);
+
+ void main_map(address_map &map);
+
+ std::vector<uint16_t> m_vram;
+ uint16_t m_flags;
+};
+
+
+// device type definition
+DECLARE_DEVICE_TYPE(ISA16_EX1280, isa16_ex1280_device)
+
+#endif // MAME_BUS_ISA_EX1280_H
diff --git a/src/devices/bus/isa/isa_cards.cpp b/src/devices/bus/isa/isa_cards.cpp
index 17b42e105d9..ec0603facbd 100644
--- a/src/devices/bus/isa/isa_cards.cpp
+++ b/src/devices/bus/isa/isa_cards.cpp
@@ -23,6 +23,7 @@
#include "svga_trident.h"
#include "num9rev.h"
#include "eis_hgb107x.h"
+#include "ex1280.h"
// storage
#include "fdc.h"
@@ -209,6 +210,7 @@ void pc_isa16_cards(device_slot_interface &device)
device.option_add("bt542bh", BT542BH);
device.option_add("bt545s", BT545S);
device.option_add("dcb", NOVELL_DCB);
+ device.option_add("ex1280", ISA16_EX1280);
device.option_add("ultra12f", ULTRA12F);
device.option_add("ultra14f", ULTRA14F);
device.option_add("ultra24f", ULTRA24F); // actually an EISA card