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Diffstat (limited to 'src/mame/drivers/att4425.cpp')
-rw-r--r-- | src/mame/drivers/att4425.cpp | 317 |
1 files changed, 0 insertions, 317 deletions
diff --git a/src/mame/drivers/att4425.cpp b/src/mame/drivers/att4425.cpp deleted file mode 100644 index 0dab4bf2d4b..00000000000 --- a/src/mame/drivers/att4425.cpp +++ /dev/null @@ -1,317 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Sergey Svishchev -/*************************************************************************** - - AT&T model 4425 text terminal with mosaic graphics character set - Also known as Teletype model 56D. - - Skeleton driver. This terminal is supported by netpbm -- pbmto4425(1) - - To do: - - keyboard - - everything else - -****************************************************************************/ - - -#include "emu.h" - -#include "cpu/z80/z80.h" -#include "machine/clock.h" -#include "machine/i8251.h" -#include "machine/ram.h" -#include "machine/z80ctc.h" -#include "machine/z80sio.h" - -#include "bus/rs232/rs232.h" -#include "machine/keyboard.h" - -#include "emupal.h" -#include "screen.h" - - -#define SCREEN_TAG "screen" -#define Z80_TAG "maincpu" -#define Z80CTC_TAG "z80ctc" -#define Z80SIO_TAG "z80sio" -#define RS232_A_TAG "sioa" -#define RS232_B_TAG "siob" -#define I8251_TAG "i8251" - -class att4425_state : public driver_device -{ -public: - att4425_state(const machine_config &mconfig, device_type type, const char *tag) - : driver_device(mconfig, type, tag) - , m_maincpu(*this, Z80_TAG) - , m_i8251(*this, I8251_TAG) - , m_sio(*this, Z80SIO_TAG) - , m_p_videoram(*this, "videoram") - , m_p_chargen(*this, "chargen") - , m_screen(*this, SCREEN_TAG) - { } - - void att4425(machine_config &config); - -private: - DECLARE_WRITE8_MEMBER(port10_w); - DECLARE_WRITE8_MEMBER(port14_w); - DECLARE_READ8_MEMBER(port14_r); - DECLARE_READ8_MEMBER(port15_r); - - DECLARE_WRITE_LINE_MEMBER(write_line_clock); - DECLARE_WRITE_LINE_MEMBER(write_keyboard_clock); - - uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); - - virtual void machine_start() override; - virtual void video_start() override; - void att4425_io(address_map &map); - void att4425_mem(address_map &map); - - required_device<z80_device> m_maincpu; - required_device<i8251_device> m_i8251; - required_device<z80sio_device> m_sio; - required_shared_ptr<uint8_t> m_p_videoram; - required_region_ptr<u8> m_p_chargen; - required_device<screen_device> m_screen; -}; - -/* Memory Maps */ - -WRITE8_MEMBER(att4425_state::port10_w) -{ - logerror("Writing %02X to port 10\n", data); -} - -WRITE8_MEMBER(att4425_state::port14_w) -{ - logerror("Writing %02X to port 14\n", data); -} - -READ8_MEMBER(att4425_state::port14_r) -{ - // only complement of bit 0 used? - return 0; -} - -READ8_MEMBER(att4425_state::port15_r) -{ - // status of something (at least bits 2 and 3 used) - return 0; -} - -void att4425_state::att4425_mem(address_map &map) -{ - map(0x0000, 0x7fff).rom().region(Z80_TAG, 0); - map(0x8000, 0xffff).ram().share("videoram"); // c000..f7af? -} - -void att4425_state::att4425_io(address_map &map) -{ - map.global_mask(0xff); - map(0x00, 0x01).rw(m_i8251, FUNC(i8251_device::read), FUNC(i8251_device::write)); - map(0x10, 0x10).w(FUNC(att4425_state::port10_w)); - map(0x14, 0x14).rw(FUNC(att4425_state::port14_r), FUNC(att4425_state::port14_w)); - map(0x15, 0x15).r(FUNC(att4425_state::port15_r)); - map(0x18, 0x1b).rw(Z80CTC_TAG, FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); - map(0x1c, 0x1f).rw(m_sio, FUNC(z80sio_device::ba_cd_r), FUNC(z80sio_device::ba_cd_w)); -} - -/* Input Ports */ - -static INPUT_PORTS_START( att4425 ) -INPUT_PORTS_END - -/* Video */ - -void att4425_state::video_start() -{ -} - -uint32_t att4425_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) -{ - uint8_t y, ra, gfx, fg, bg, chr, attr; - uint16_t sy = 0, ma, x, ca; - - fg = 2; - bg = 0; - - for (y = 0; y < 27; y++) - { - ma = 0x7e9c + 4 * (81 - 27 + y); - ma = (m_p_videoram[ma] << 8) + m_p_videoram[ma + 1] - 0x8000; - - for (ra = 0; ra < 13; ra++) - { - uint16_t *p = &bitmap.pix16(sy++); - - for (x = ma; x < ma + 160; x += 2) - { - chr = m_p_videoram[x + 1]; - attr = m_p_videoram[x]; - ca = (chr << 4) & 0x7f0; - - // font 2 - if (attr & 0x01) - ca += 0x0800; - - // underline - if (attr & 0x10 && ra == 12) - gfx = 0xff; - else - gfx = m_p_chargen[ca | ra] ^ 255; - - // dim - if (attr & 0x02) - fg = 1; - else - fg = 2; - - // conceal - if (attr & 0x04) - fg = bg; - - // reverse video - if (attr & 0x20) - gfx ^= 255; - - /* Display a scanline of a character */ - for (int i = 7; i >= 0; i--) - { - *p++ = BIT(gfx, i) ? fg : bg; - } - *p++ = bg; - } - } - } - return 0; -} - -static const gfx_layout att4425_charlayout = -{ - 8, 13, - RGN_FRAC(1,1), - 1, - { 0 }, - { STEP8(0,1) }, - { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8, 12*8, }, - 16*8 -}; - -static GFXDECODE_START( gfx_att4425 ) - GFXDECODE_ENTRY( "chargen", 0x0000, att4425_charlayout, 0, 1 ) -GFXDECODE_END - -/* Machine Initialization */ - -void att4425_state::machine_start() -{ -} - -/* Machine Driver */ - -WRITE_LINE_MEMBER(att4425_state::write_line_clock) -{ - m_sio->rxca_w(state); - m_sio->txca_w(state); - m_sio->rxtxcb_w(state); -} - -WRITE_LINE_MEMBER(att4425_state::write_keyboard_clock) -{ - m_i8251->write_txc(state); - m_i8251->write_rxc(state); -} - -static const z80_daisy_config att4425_daisy_chain[] = -{ - // XXX order is unknown - { Z80SIO_TAG }, - { Z80CTC_TAG }, - { nullptr } -}; - -void att4425_state::att4425(machine_config &config) -{ - /* basic machine hardware */ - Z80(config, m_maincpu, XTAL(32'000'000)/8); // XXX - m_maincpu->set_addrmap(AS_PROGRAM, &att4425_state::att4425_mem); - m_maincpu->set_addrmap(AS_IO, &att4425_state::att4425_io); - m_maincpu->set_daisy_config(att4425_daisy_chain); - - /* video hardware */ - SCREEN(config, m_screen, SCREEN_TYPE_RASTER, rgb_t::green()); - m_screen->set_refresh_hz(50); - m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */ - m_screen->set_screen_update(FUNC(att4425_state::screen_update)); - m_screen->set_palette("palette"); - m_screen->set_size(720, 351); - m_screen->set_visarea(0, 720-1, 0, 351-1); - GFXDECODE(config, "gfxdecode", "palette", gfx_att4425); - PALETTE(config, "palette", palette_device::MONOCHROME_HIGHLIGHT); - - // ch.3 -- timer? - z80ctc_device& ctc(Z80CTC(config, Z80CTC_TAG, XTAL(32'000'000))); // XXX; - ctc.intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); -#ifdef notdef - ctc.zc_callback<0>().set(m_sio, FUNC(z80sio_device::rxca_w)); - ctc.zc_callback<0>().append(m_sio, FUNC(z80sio_device::txca_w)); - ctc.zc_callback<2>().set(m_sio, FUNC(z80sio_device::rxtxcb_w)); -#endif - - Z80SIO(config, m_sio, 4800); // XXX - m_sio->out_int_callback().set_inputline(Z80_TAG, INPUT_LINE_IRQ0); - m_sio->out_txda_callback().set(RS232_A_TAG, FUNC(rs232_port_device::write_txd)); - m_sio->out_dtra_callback().set(RS232_A_TAG, FUNC(rs232_port_device::write_dtr)); - m_sio->out_rtsa_callback().set(RS232_A_TAG, FUNC(rs232_port_device::write_rts)); - m_sio->out_txdb_callback().set(RS232_B_TAG, FUNC(rs232_port_device::write_txd)); - - // host - rs232_port_device &rs232a(RS232_PORT(config, RS232_A_TAG, default_rs232_devices, "null_modem")); - rs232a.rxd_handler().set(m_sio, FUNC(z80sio_device::rxa_w)); - rs232a.dcd_handler().set(m_sio, FUNC(z80sio_device::dcda_w)); - rs232a.cts_handler().set(m_sio, FUNC(z80sio_device::ctsa_w)); - - // aux printer? - rs232_port_device &rs232b(RS232_PORT(config, RS232_B_TAG, default_rs232_devices, "printer")); - rs232b.rxd_handler().set(m_sio, FUNC(z80sio_device::rxb_w)); - - // XXX - clock_device &line_clock(CLOCK(config, "line_clock", 9600*64)); - line_clock.signal_handler().set(FUNC(att4425_state::write_line_clock)); - - I8251(config, m_i8251, 0); - m_i8251->txd_handler().set("rs232", FUNC(rs232_port_device::write_txd)); - m_i8251->dtr_handler().set("rs232", FUNC(rs232_port_device::write_dtr)); - m_i8251->rts_handler().set("rs232", FUNC(rs232_port_device::write_rts)); - - rs232_port_device &rs232(RS232_PORT(config, "rs232", default_rs232_devices, "keyboard")); - rs232.rxd_handler().set(m_i8251, FUNC(i8251_device::write_rxd)); - rs232.cts_handler().set(m_i8251, FUNC(i8251_device::write_cts)); - rs232.dsr_handler().set(m_i8251, FUNC(i8251_device::write_dsr)); - - // XXX - clock_device &keyboard_clock(CLOCK(config, "keyboard_clock", 4800*64)); - keyboard_clock.signal_handler().set(FUNC(att4425_state::write_keyboard_clock)); - - RAM(config, RAM_TAG).set_default_size("32K").set_default_value(0); -} - -/* ROMs */ - -ROM_START( att4425 ) - ROM_REGION( 0x8000, Z80_TAG, 0 ) - ROM_LOAD( "455773-1.bin", 0x0000, 0x2000, CRC(d216515b) SHA1(6e098c35f8fe6be4f28a577a43145c92972041b1) ) - ROM_LOAD( "455774-1.bin", 0x2000, 0x2000, CRC(636c069a) SHA1(c00648eae44c574b983de6a0ba6cf74a7f07b098) ) - ROM_LOAD( "456305-1.bin", 0x4000, 0x2000, CRC(43cbf638) SHA1(939569e65957370ab8e60d4f90179373b72b9573) ) - ROM_LOAD( "456306-1.bin", 0x6000, 0x2000, CRC(e4f2b0f1) SHA1(c80c2b7219b313b4924834b0a9d1d42536d1ae63) ) - - ROM_REGION( 0x2000, "chargen", 0 ) - ROM_LOAD( "char.bin", 0x0000, 0x2000, CRC(cca962cc) SHA1(201d97b954f782ceae8d17a08fb9a1c4d5ae7a58) ) -ROM_END - -/* System Drivers */ - -// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS -COMP( 1983, att4425, 0, 0, att4425, att4425, att4425_state, empty_init, "AT&T", "AT&T Teletype 4425", MACHINE_IS_SKELETON ) |