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-idpart_video.cpp: added Iskra Delta Partner Video (Text) board [Jern…
…ej Jakob]
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| // license:BSD-3-Clause | ||
| // copyright-holders:Miodrag Milanovic | ||
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| #include "emu.h" | ||
| #include "idpart_video.h" | ||
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| #include "cpu/i8085/i8085.h" | ||
| #include "machine/i8257.h" | ||
| #include "machine/pit8253.h" | ||
| #include "machine/z80sio.h" | ||
| #include "video/i8275.h" | ||
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| #include "emupal.h" | ||
| #include "screen.h" | ||
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| namespace { | ||
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| class idpart_video_device : public device_t, public device_rs232_port_interface | ||
| { | ||
| public: | ||
| idpart_video_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) | ||
| : device_t(mconfig, IDPART_VIDEO, tag, owner, clock) | ||
| , device_rs232_port_interface(mconfig, *this) | ||
| , m_maincpu(*this, "maincpu") | ||
| , m_mpsc(*this, "mpsc") | ||
| , m_serial(*this, "serial") | ||
| , m_dma(*this, "dma") | ||
| , m_pit(*this, "pit") | ||
| , m_crtc(*this, "crtc") | ||
| , m_palette(*this, "palette") | ||
| , m_chargen(*this, "chargen") | ||
| , m_dreq0(0) | ||
| , m_dack0(0) | ||
| { | ||
| } | ||
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| virtual void input_txd(int state) override { m_mpsc->rxa_w(state); } | ||
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| protected: | ||
| virtual void device_start() override; | ||
| virtual void device_reset() override; | ||
| virtual void device_add_mconfig(machine_config &config) override; | ||
| virtual const tiny_rom_entry *device_rom_region() const override; | ||
| virtual ioport_constructor device_input_ports() const override; | ||
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| private: | ||
| void io_map(address_map &map); | ||
| void mem_map(address_map &map); | ||
| I8275_DRAW_CHARACTER_MEMBER(display_pixels); | ||
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| uint8_t memory_read_byte(offs_t offset) { return m_program.read_byte(offset); } | ||
| void memory_write_byte(offs_t offset, uint8_t data) { m_program.write_byte(offset, data); } | ||
| u8 fast_zero_r(offs_t offset) { return 0; } | ||
| void dreq0_w(int state) { m_dreq0 = state; } | ||
| int dreq0_r() { return m_dreq0; } | ||
| void dack0_w(int state) { m_dack0 = state; } | ||
| void tc_w(int state) { if (!m_dack0) m_maincpu->set_input_line(I8085_RST75_LINE, state);} | ||
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| required_device<i8085a_cpu_device> m_maincpu; | ||
| required_device<i8274_device> m_mpsc; | ||
| required_device<rs232_port_device> m_serial; | ||
| required_device<i8257_device> m_dma; | ||
| required_device<pit8254_device> m_pit; | ||
| required_device<i8275_device> m_crtc; | ||
| required_device<palette_device> m_palette; | ||
| required_region_ptr<u8> m_chargen; | ||
| memory_access<16, 0, 0, ENDIANNESS_LITTLE>::specific m_program; | ||
| int m_dreq0; | ||
| int m_dack0; | ||
| }; | ||
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| /* Memory maps */ | ||
| void idpart_video_device::mem_map(address_map &map) | ||
| { | ||
| map.unmap_value_high(); | ||
| map(0x0000, 0x0fff).mirror(0x4000).rom().region("maincpu", 0); | ||
| map(0x8000, 0x8bff).mirror(0x6000).ram(); | ||
| } | ||
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| void idpart_video_device::io_map(address_map &map) | ||
| { | ||
| map.unmap_value_high(); | ||
| map.global_mask(0xff); | ||
| map(0x00, 0x01).mirror(0x0e).rw(m_crtc, FUNC(i8275_device::read), FUNC(i8275_device::write)); | ||
| map(0x10, 0x13).mirror(0x0c).rw(m_mpsc, FUNC(i8274_device::cd_ba_r), FUNC(i8274_device::cd_ba_w)); | ||
| map(0x20, 0x2f).rw(m_dma, FUNC(i8257_device::read), FUNC(i8257_device::write)); | ||
| map(0x30, 0x33).mirror(0x0c).rw(m_pit, FUNC(pit8254_device::read), FUNC(pit8254_device::write)); | ||
| } | ||
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| /* F4 Character Displayer */ | ||
| static const gfx_layout charlayout = | ||
| { | ||
| 8, 8, /* 8 x 8 characters */ | ||
| 128, /* 128 characters */ | ||
| 1, /* 1 bits per pixel */ | ||
| { 0 }, /* no bitplanes */ | ||
| /* x offsets */ | ||
| { 0, 1, 2, 3, 4, 5, 6, 7 }, | ||
| /* y offsets */ | ||
| { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 }, | ||
| 8*8 /* every char takes 16 bytes */ | ||
| }; | ||
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| static GFXDECODE_START( gfx_idpart_video ) | ||
| GFXDECODE_ENTRY( "chargen", 0x0000, charlayout, 0, 1 ) | ||
| GFXDECODE_END | ||
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| I8275_DRAW_CHARACTER_MEMBER(idpart_video_device::display_pixels) | ||
| { | ||
| using namespace i8275_attributes; | ||
| rgb_t const *const palette = m_palette->palette()->entry_list_raw(); | ||
| u8 pixels = m_chargen[(linecount & 7) + (charcode << 3)]; | ||
| if (BIT(attrcode, VSP)) | ||
| pixels = 0; | ||
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| if (BIT(attrcode, LTEN)) | ||
| pixels = 0xff; | ||
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| if (BIT(attrcode, RVV)) | ||
| pixels ^= 0xff; | ||
| bool hlgt = BIT(attrcode, HLGT); | ||
| for (u8 i = 0; i < 7; i++) | ||
| bitmap.pix(y, x + i) = palette[((pixels >> (7-i)) & 1) ? (hlgt ? 2 : 1) : 0]; | ||
| } | ||
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| static DEVICE_INPUT_DEFAULTS_START(keyboard) | ||
| DEVICE_INPUT_DEFAULTS("RS232_TXBAUD", 0xff, RS232_BAUD_300) | ||
| DEVICE_INPUT_DEFAULTS_END | ||
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| void idpart_video_device::device_add_mconfig(machine_config &config) | ||
| { | ||
| /* basic machine hardware */ | ||
| I8085A(config, m_maincpu, XTAL(6'144'000)); | ||
| m_maincpu->set_addrmap(AS_PROGRAM, &idpart_video_device::mem_map); | ||
| m_maincpu->set_addrmap(AS_IO, &idpart_video_device::io_map); | ||
| m_maincpu->in_sid_func().set(*this, FUNC(idpart_video_device::dreq0_r)); | ||
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| PALETTE(config, "palette", palette_device::MONOCHROME_HIGHLIGHT); | ||
| GFXDECODE(config, "gfxdecode", "palette", gfx_idpart_video); | ||
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| RS232_PORT(config, m_serial, default_rs232_devices, nullptr); | ||
| m_serial->rxd_handler().set(m_mpsc, FUNC(z80sio_device::rxb_w)); | ||
| m_serial->set_default_option("keyboard"); | ||
| m_serial->set_option_device_input_defaults("keyboard", DEVICE_INPUT_DEFAULTS_NAME(keyboard)); | ||
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| I8274(config, m_mpsc, XTAL(6'144'000) / 2); | ||
| m_mpsc->out_txdrqa_callback().set(m_dma, FUNC(i8257_device::dreq2_w)); | ||
| m_mpsc->out_rxdrqa_callback().set(m_dma, FUNC(i8257_device::dreq3_w)); | ||
| m_mpsc->out_txda_callback().set(*this, FUNC(idpart_video_device::output_rxd)); | ||
| m_mpsc->out_txdb_callback().set(m_serial, FUNC(rs232_port_device::write_txd)); | ||
| m_mpsc->out_int_callback().set_inputline(m_maincpu, I8085_RST65_LINE); | ||
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| I8257(config, m_dma, XTAL(6'144'000) / 2); | ||
| m_dma->out_hrq_cb().set_inputline(m_maincpu, INPUT_LINE_HALT); | ||
| m_dma->out_hrq_cb().append(m_dma, FUNC(i8257_device::hlda_w)); | ||
| m_dma->in_memr_cb().set(FUNC(idpart_video_device::memory_read_byte)); | ||
| m_dma->out_memw_cb().set(FUNC(idpart_video_device::memory_write_byte)); | ||
| m_dma->out_tc_cb().set(*this, FUNC(idpart_video_device::tc_w)); | ||
| m_dma->out_iow_cb<0>().set(m_crtc, FUNC(i8275_device::dack_w)); | ||
| m_dma->out_dack_cb<0>().set(*this, FUNC(idpart_video_device::dack0_w)); | ||
| m_dma->in_ior_cb<1>().set(*this, FUNC(idpart_video_device::fast_zero_r)); | ||
| m_dma->in_ior_cb<2>().set(m_mpsc, FUNC(i8274_device::da_r)); | ||
| m_dma->out_iow_cb<3>().set(m_mpsc, FUNC(i8274_device::da_w)); | ||
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| // PIT | ||
| PIT8254(config, m_pit, 0); | ||
| m_pit->set_clk<0>(XTAL(6'144'000) / 2); | ||
| m_pit->set_clk<1>(XTAL(6'144'000) / 2); | ||
| m_pit->set_clk<2>(XTAL(6'144'000) / 2); | ||
| m_pit->out_handler<0>().set(m_mpsc, FUNC(i8274_device::txca_w)); | ||
| m_pit->out_handler<0>().append(m_mpsc, FUNC(i8274_device::rxca_w)); | ||
| m_pit->out_handler<1>().set(m_mpsc, FUNC(i8274_device::txcb_w)); | ||
| m_pit->out_handler<1>().append(m_mpsc, FUNC(i8274_device::rxcb_w)); | ||
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| /* video hardware */ | ||
| I8275(config, m_crtc, XTAL(22'680'000) / 2 / 7); | ||
| m_crtc->set_character_width(7); | ||
| m_crtc->set_display_callback(FUNC(idpart_video_device::display_pixels)); | ||
| m_crtc->set_screen("screen"); | ||
| m_crtc->drq_wr_callback().set(m_dma, FUNC(i8257_device::dreq0_w)); | ||
| m_crtc->drq_wr_callback().append(*this, FUNC(idpart_video_device::dreq0_w)); | ||
| m_crtc->irq_wr_callback().set_inputline(m_maincpu, I8085_RST55_LINE); | ||
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| screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); | ||
| screen.set_raw(XTAL(22'680'000) / 2, 728, 0, 560, 310, 0, 270); | ||
| screen.set_screen_update(m_crtc, FUNC(i8275_device::screen_update)); | ||
| } | ||
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| INPUT_PORTS_START(idpart_video) | ||
| INPUT_PORTS_END | ||
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| ioport_constructor idpart_video_device::device_input_ports() const | ||
| { | ||
| return INPUT_PORTS_NAME(idpart_video); | ||
| } | ||
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| ROM_START(idpart_video) | ||
| ROM_REGION( 0x1000, "maincpu", ROMREGION_ERASEFF ) | ||
| ROM_LOAD( "video.e34", 0x0000, 0x0800, CRC(67e2c351) SHA1(1ca86b1b35d9a213db0c3f291dc839fc3621269c)) | ||
| ROM_REGION( 0x0800, "chargen",0 ) | ||
| ROM_LOAD( "video.e4", 0x0000, 0x0800, CRC(5fe52e0d) SHA1(c6067e3fdda84e673aaa74ae6561b535157a8281)) | ||
| ROM_END | ||
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| const tiny_rom_entry *idpart_video_device::device_rom_region() const | ||
| { | ||
| return ROM_NAME( idpart_video ); | ||
| } | ||
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| void idpart_video_device::device_start() | ||
| { | ||
| m_maincpu->space(AS_PROGRAM).specific(m_program); | ||
| save_item(NAME(m_dack0)); | ||
| save_item(NAME(m_dreq0)); | ||
| } | ||
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| void idpart_video_device::device_reset() | ||
| { | ||
| m_dma->dreq1_w(1); | ||
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| output_rxd(1); | ||
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| output_dcd(0); | ||
| output_dsr(0); | ||
| output_cts(0); | ||
| m_dack0 = 0; | ||
| m_dreq0 = 0; | ||
| } | ||
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| } // anonymous namespace | ||
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| DEFINE_DEVICE_TYPE_PRIVATE(IDPART_VIDEO, device_rs232_port_interface, idpart_video_device, "idpart_video", "Iskra Delta Partner Video (Text) Board") |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| // license:BSD-3-Clause | ||
| // copyright-holders:Miodrag Milanovic | ||
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| #ifndef MAME_SFRJ_IDPART_VIDEO_H | ||
| #define MAME_SFRJ_IDPART_VIDEO_H | ||
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| #pragma once | ||
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| #include "bus/rs232/rs232.h" | ||
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| DECLARE_DEVICE_TYPE(IDPART_VIDEO, device_rs232_port_interface) | ||
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| #endif // MAME_SFRJ_IDPART_VIDEO_H |
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