/* Luxor ABC 80 PCB Layout ---------- 55 10470-02 CN1 CN2 CN5 SW1 |-----| |------------------------| |-----| |-------| |--| |----------------------------------| |---| | CN3 CN4 | | 7912 | | MC1488 | | MC1489 7812 | | LS245 LS138 | | |-------| | | |-----CN6-----| LS241 LS241 LS138 LS32 |SN76477| LS04 LM339 | | |-------| | | |--------------| |------------| PROM0 LS132 LS273 7406 LS08 | | | Z80A PIO | | Z80A | | | |--------------| |------------| LS04 LS74A LS86 LS161 LS166 74393 | | | | ROM3 LS107 4116 4116 LS10 LS257 LS74A LS08 LS107 PROM2 | | | | ROM2 LS257 4116 4116 LS139 74393 LS107 LS32 LS175 74393 | | | | ROM1 LS257 4116 4116 LS08 LS283 LS10 LS32 PROM1 74393 | | | | ROM0 LS257 4116 4116 LS257 74393 LS375 74S263 LS145 PROM4 | | | | DIPSW1 DIPSW2 4045 4045 LS257 LS245 LS375 LS273 LS166 PROM3 | |--------------------------------------------------------------------------------------| Notes: All IC's shown. ROM0-3 - Texas Instruments TMS4732 4Kx8 General Purpose Mask Programmable ROM PROM0-2 - Philips Semiconductors N82S129 256x4 TTL Bipolar PROM PROM3-4 - Philips Semiconductors N82S131 512x4 TTL Bipolar PROM 4116 - Texas Instruments TMS4116-25 16Kx1 Dynamic RAM 4045 - Texas Instruments TMS4045-15 1Kx4 General Purpose Static RAM with Multiplexed I/O Z80A - Sharp LH0080A Z80A CPU Z80APIO - SGS-Thomson Z8420AB1 Z80A PIO SN76477 - Texas Instruments SN76477N Complex Sound Generator 74S263 - Texas Instruments SN74S263N Row Output Character Generator MC1488 - Texas Instruments MC1488 Quadruple Line Driver MC1489 - Texas Instruments MC1489 Quadruple Line Receiver CN1 - RS-232 connector CN2 - ABC bus connector (DIN 41612) CN3 - video connector CN4 - cassette motor connector CN5 - cassette connector CN6 - keyboard connector SW1 - reset switch DIPSW1 - DIPSW2 - */ /* TODO: - cassette interrupt routine samples the latch too soon - proper keyboard controller emulation - MyAB 80-column card - GeJo 80-column card - Mikrodatorn 64K expansion - floppy - printer - IEC - Metric ABC CAD 1000 */ #include "includes/abc80.h" //************************************************************************** // MACROS / CONSTANTS //************************************************************************** #define MMU_XM 0x01 #define MMU_ROM 0x02 #define MMU_VRAMS 0x04 #define MMU_RAM 0x08 //************************************************************************** // KEYBOARD HACK //************************************************************************** static INPUT_PORTS_START( fake_keyboard ) PORT_START("ROW0") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"') PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("4 \xC2\xA4") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR(0x00A4) PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&') PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('/') PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(') PORT_START("ROW1") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')') PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR('=') PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('+') PORT_CHAR('?') PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR(0x00E9) PORT_CHAR(0x00C9) PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('<') PORT_CHAR('>') PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E') PORT_START("ROW2") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR(0x00E5) PORT_CHAR(0x00C5) PORT_START("ROW3") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(0x00FC) PORT_CHAR(0x00DC) PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("RETURN") PORT_CODE(KEYCODE_ENTER) PORT_CHAR('\r') PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D') PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') PORT_START("ROW4") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(0x00F6) PORT_CHAR(0x00D6) PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(0x00E4) PORT_CHAR(0x00C4) PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\'') PORT_CHAR('*') PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME(UTF8_LEFT) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') PORT_START("ROW5") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR(';') PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR(':') PORT_START("ROW6") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('-') PORT_CHAR('_') PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME(UTF8_RIGHT) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("SPACE") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNUSED ) PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED ) PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED ) PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNUSED ) PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED ) PORT_START("ROW7") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("LEFT SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1) PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("RIGHT SHIFT") PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("UPPER CASE") PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) PORT_TOGGLE PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_MAMEKEY(LCONTROL)) PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED ) PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED ) PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNUSED ) PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED ) INPUT_PORTS_END static const UINT8 abc80_keycodes[7*4][8] = { /* unshifted */ { 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38 }, { 0x39, 0x30, 0x2B, 0x60, 0x3C, 0x71, 0x77, 0x65 }, { 0x72, 0x74, 0x79, 0x75, 0x69, 0x6F, 0x70, 0x7D }, { 0x7E, 0x0D, 0x61, 0x73, 0x64, 0x66, 0x67, 0x68 }, { 0x6A, 0x6B, 0x6C, 0x7C, 0x7B, 0x27, 0x08, 0x7A }, { 0x78, 0x63, 0x76, 0x62, 0x6E, 0x6D, 0x2C, 0x2E }, { 0x2D, 0x09, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00 }, /* shift */ { 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x2f, 0x28 }, { 0x29, 0x3d, 0x3f, 0x40, 0x3e, 0x51, 0x57, 0x45 }, { 0x52, 0x54, 0x59, 0x55, 0x49, 0x4f, 0x50, 0x5d }, { 0x5e, 0x0d, 0x41, 0x53, 0x44, 0x46, 0x47, 0x48 }, { 0x4a, 0x4b, 0x4c, 0x5c, 0x5b, 0x2a, 0x08, 0x5a }, { 0x58, 0x43, 0x56, 0x42, 0x4e, 0x4d, 0x3b, 0x3a }, { 0x5f, 0x09, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00 }, /* control */ { 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38 }, { 0x39, 0x30, 0x2b, 0x00, 0x7f, 0x11, 0x17, 0x05 }, { 0x12, 0x14, 0x19, 0x15, 0x09, 0x0f, 0x10, 0x1d }, { 0x1e, 0x0d, 0x01, 0x13, 0x04, 0x06, 0x07, 0x08 }, { 0x0a, 0x0b, 0x0c, 0x1c, 0x1b, 0x27, 0x08, 0x1a }, { 0x18, 0x03, 0x16, 0x02, 0x0e, 0x0d, 0x2c, 0x2e }, { 0x2d, 0x09, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00 }, /* control-shift */ { 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x2f, 0x28 }, { 0x29, 0x3d, 0x3f, 0x00, 0x7f, 0x11, 0x17, 0x05 }, { 0x12, 0x14, 0x19, 0x15, 0x09, 0x1f, 0x00, 0x1d }, { 0x1e, 0x0d, 0x01, 0x13, 0x04, 0x06, 0x07, 0x08 }, { 0x0a, 0x1b, 0x1c, 0x1c, 0x1b, 0x2a, 0x08, 0x1a }, { 0x18, 0x03, 0x16, 0x02, 0x1e, 0x1d, 0x3b, 0x3a }, { 0x5f, 0x09, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00 } }; void abc80_state::scan_keyboard() { static const char *const keynames[] = { "ROW0", "ROW1", "ROW2", "ROW3", "ROW4", "ROW5", "ROW6" }; int table = 0, row, col; if (ioport("ROW7")->read() & 0x07) { /* shift, upper case */ table |= 0x01; } if (ioport("ROW7")->read() & 0x08) { /* ctrl */ table |= 0x02; } /* clear key strobe */ m_key_strobe = 0; /* scan keyboard */ for (row = 0; row < 7; row++) { UINT8 data = ioport(keynames[row])->read(); for (col = 0; col < 8; col++) { if (BIT(data, col)) { UINT8 keydata = abc80_keycodes[row + (table * 7)][col]; /* set key strobe */ m_key_strobe = 1; if (m_key_data != keydata) { UINT8 pio_data = 0x80 | keydata; /* latch key data */ m_key_data = keydata; m_pio->port_a_write(pio_data); return; } } } } if (!m_key_strobe && m_key_data) { m_pio->port_a_write(m_key_data); timer_set(attotime::from_msec(50), TIMER_ID_FAKE_KEYBOARD_CLEAR); } } //************************************************************************** // MEMORY MANAGEMENT //************************************************************************** //------------------------------------------------- // read - //------------------------------------------------- READ8_MEMBER( abc80_state::read ) { UINT8 data = 0xff; UINT8 mmu = m_mmu_rom[0x40 | (offset >> 10)]; if (!(mmu & MMU_XM)) { data = m_bus->xmemfl_r(space, offset); } else if (!(mmu & MMU_ROM)) { data = memregion(Z80_TAG)->base()[offset & 0x3fff]; } else if (mmu & MMU_VRAMS) { data = m_video_ram[offset & 0x3ff]; } else if (!(mmu & MMU_RAM)) { data = m_ram->pointer()[offset & 0x3fff]; } return data; } //------------------------------------------------- // write - //------------------------------------------------- WRITE8_MEMBER( abc80_state::write ) { UINT8 mmu = m_mmu_rom[0x40 | (offset >> 10)]; if (!(mmu & MMU_XM)) { m_bus->xmemw_w(space, offset, data); } else if (mmu & MMU_VRAMS) { m_video_ram[offset & 0x3ff] = data; } else if (!(mmu & MMU_RAM)) { m_ram->pointer()[offset & 0x3fff] = data; } } //************************************************************************** // SOUND //************************************************************************** //------------------------------------------------- // vco_voltage_w - CSG VCO voltage select //------------------------------------------------- WRITE_LINE_MEMBER( abc80_state::vco_voltage_w ) { sn76477_vco_voltage_w(m_psg, state ? 2.5 : 0); } //************************************************************************** // ADDRESS MAPS //************************************************************************** //------------------------------------------------- // ADDRESS_MAP( abc80_mem ) //------------------------------------------------- static ADDRESS_MAP_START( abc80_mem, AS_PROGRAM, 8, abc80_state ) ADDRESS_MAP_UNMAP_HIGH AM_RANGE(0x0000, 0xffff) AM_READWRITE(read, write) ADDRESS_MAP_END //------------------------------------------------- // ADDRESS_MAP( abc80_io ) //------------------------------------------------- static ADDRESS_MAP_START( abc80_io, AS_IO, 8, abc80_state ) ADDRESS_MAP_UNMAP_HIGH ADDRESS_MAP_GLOBAL_MASK(0x17) AM_RANGE(0x00, 0x00) AM_DEVREADWRITE(ABCBUS_TAG, abcbus_slot_device, inp_r, utp_w) AM_RANGE(0x01, 0x01) AM_DEVREADWRITE(ABCBUS_TAG, abcbus_slot_device, stat_r, cs_w) AM_RANGE(0x02, 0x02) AM_DEVWRITE(ABCBUS_TAG, abcbus_slot_device, c1_w) AM_RANGE(0x03, 0x03) AM_DEVWRITE(ABCBUS_TAG, abcbus_slot_device, c2_w) AM_RANGE(0x04, 0x04) AM_DEVWRITE(ABCBUS_TAG, abcbus_slot_device, c3_w) AM_RANGE(0x05, 0x05) AM_DEVWRITE(ABCBUS_TAG, abcbus_slot_device, c4_w) AM_RANGE(0x06, 0x06) AM_WRITE_PORT("SN76477") AM_RANGE(0x07, 0x07) AM_DEVREAD(ABCBUS_TAG, abcbus_slot_device, rst_r) AM_RANGE(0x10, 0x13) AM_MIRROR(0x04) AM_DEVREADWRITE(Z80PIO_TAG, z80pio_device, read_alt, write_alt) ADDRESS_MAP_END //************************************************************************** // INPUT PORTS //************************************************************************** //------------------------------------------------- // INPUT_PORTS( abc80 ) //------------------------------------------------- static INPUT_PORTS_START( abc80 ) PORT_INCLUDE(fake_keyboard) PORT_START("SW1") PORT_DIPNAME( 0x01, 0x01, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x01, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x02, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x04, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x08, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x10, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x20, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x40, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x80, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_START("SW2") PORT_DIPNAME( 0x01, 0x01, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x01, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x02, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x04, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x08, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x10, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x20, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x40, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) ) PORT_DIPSETTING( 0x80, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_START("SN76477") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_SPECIAL) PORT_WRITE_LINE_DEVICE(SN76477_TAG, sn76477_enable_w) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_SPECIAL) PORT_WRITE_LINE_DEVICE_MEMBER(DEVICE_SELF, abc80_state, vco_voltage_w) PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_SPECIAL) PORT_WRITE_LINE_DEVICE(SN76477_TAG, sn76477_vco_w) PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_SPECIAL) PORT_WRITE_LINE_DEVICE(SN76477_TAG, sn76477_mixer_b_w) PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_SPECIAL) PORT_WRITE_LINE_DEVICE(SN76477_TAG, sn76477_mixer_a_w) PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_SPECIAL) PORT_WRITE_LINE_DEVICE(SN76477_TAG, sn76477_mixer_c_w) PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_SPECIAL) PORT_WRITE_LINE_DEVICE(SN76477_TAG, sn76477_envelope_2_w) PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_SPECIAL) PORT_WRITE_LINE_DEVICE(SN76477_TAG, sn76477_envelope_1_w) INPUT_PORTS_END //************************************************************************** // DEVICE CONFIGURATION //************************************************************************** //------------------------------------------------- // sn76477_interface csg_intf //------------------------------------------------- static const sn76477_interface csg_intf = { RES_K(47), // 4 noise_res R26 47k RES_K(330), // 5 filter_res R24 330k CAP_P(390), // 6 filter_cap C52 390p RES_K(47), // 7 decay_res R23 47k CAP_U(10), // 8 attack_decay_cap C50 10u/35V RES_K(2.2), // 10 attack_res R21 2.2k RES_K(33), // 11 amplitude_res R19 33k RES_K(10), // 12 feedback_res R18 10k 0, // 16 vco_voltage 0V or 2.5V CAP_N(10) , // 17 vco_cap C48 10n RES_K(100), // 18 vco_res R20 100k 0, // 19 pitch_voltage N/C RES_K(220), // 20 slf_res R22 220k CAP_U(1), // 21 slf_cap C51 1u/35V CAP_U(0.1), // 23 oneshot_cap C53 0.1u RES_K(330) // 24 oneshot_res R25 330k }; //------------------------------------------------- // Z80PIO_INTERFACE( pio_intf ) //------------------------------------------------- READ8_MEMBER( abc80_state::pio_pa_r ) { /* PIO Port A bit description 0 keyboard data 1 keyboard data 2 keyboard data 3 keyboard data 4 keyboard data 5 keyboard data 6 keyboard data 7 keyboard strobe */ UINT8 data = 0; //data |= m_kb->data_r(); data |= m_key_data; data |= (m_key_strobe << 7); return data; }; READ8_MEMBER( abc80_state::pio_pb_r ) { /* PIO Channel B 0 R RS-232C RxD 1 R RS-232C _CTS 2 R RS-232C _DCD 3 W RS-232C TxD 4 W RS-232C _RTS 5 W Cassette Motor 6 W Cassette Data 7 R Cassette Data */ UINT8 data = 0; // receive data data |= m_rs232->rx(); // clear to send data |= m_rs232->cts_r() << 1; // data carrier detect data |= m_rs232->dcd_r() << 2; // cassette data data |= m_tape_in_latch << 7; //logerror("read tape latch %u\n", m_tape_in_latch); return data; }; WRITE8_MEMBER( abc80_state::pio_pb_w ) { /* PIO Channel B 0 R RS-232C RxD 1 R RS-232C _CTS 2 R RS-232C _DCD 3 W RS-232C TxD 4 W RS-232C _RTS 5 W Cassette Motor 6 W Cassette Data 7 R Cassette Data */ // transmit data m_rs232->tx(BIT(data, 3)); // request to send m_rs232->rts_w(BIT(data, 4)); // cassette motor if (BIT(data, 5)) { m_cassette->change_state(CASSETTE_MOTOR_ENABLED, CASSETTE_MASK_MOTOR); m_cassette_timer->enable(true); } else { m_cassette->change_state(CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR); m_cassette_timer->enable(false); } // cassette data m_cassette->output(BIT(data, 6) ? -1.0 : +1.0); // cassette input latch if (BIT(data, 6)) { //logerror("clear tape in latch\n"); m_tape_in_latch = 1; m_pio->port_b_write(m_tape_in_latch << 7); } }; static Z80PIO_INTERFACE( pio_intf ) { DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_IRQ0), /* callback when change interrupt status */ DEVCB_DRIVER_MEMBER(abc80_state, pio_pa_r), /* port A read callback */ DEVCB_NULL, /* port A write callback */ DEVCB_NULL, /* portA ready active callback */ DEVCB_DRIVER_MEMBER(abc80_state, pio_pb_r), /* port B read callback */ DEVCB_DRIVER_MEMBER(abc80_state, pio_pb_w), /* port B write callback */ DEVCB_NULL /* portB ready active callback */ }; //------------------------------------------------- // Z80PIO_INTERFACE( pio_intf ) //------------------------------------------------- static const z80_daisy_config abc80_daisy_chain[] = { { Z80PIO_TAG }, { NULL } }; //------------------------------------------------- // cassette_interface abc80_cassette_interface //------------------------------------------------- static const cassette_interface abc80_cassette_interface = { cassette_default_formats, NULL, (cassette_state)(CASSETTE_STOPPED | CASSETTE_MOTOR_DISABLED | CASSETTE_SPEAKER_MUTED), NULL, NULL }; //------------------------------------------------- // ABC80_KEYBOARD_INTERFACE( kb_intf ) //------------------------------------------------- WRITE_LINE_MEMBER( abc80_state::keydown_w ) { m_key_strobe = state; m_pio->port_a_write(m_key_strobe << 7); } static ABC80_KEYBOARD_INTERFACE( kb_intf ) { DEVCB_DRIVER_LINE_MEMBER(abc80_state, keydown_w) }; //------------------------------------------------- // ABCBUS_INTERFACE( abcbus_intf ) //------------------------------------------------- static ABCBUS_INTERFACE( abcbus_intf ) { DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL }; //------------------------------------------------- // rs232_port_interface rs232_intf //------------------------------------------------- static SLOT_INTERFACE_START( rs232_devices ) SLOT_INTERFACE_END static const rs232_port_interface rs232_intf = { DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL }; //************************************************************************** // MACHINE INITIALIZATION //************************************************************************** //------------------------------------------------- // device_timer - handler timer events //------------------------------------------------- void abc80_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) { switch (id) { case TIMER_ID_PIO: m_pio_astb = !m_pio_astb; m_pio->strobe_a(m_pio_astb); break; case TIMER_ID_CASSETTE: { int tape_in = m_cassette->input() > 0; //logerror("tape bit %u\n", tape_in); if (m_tape_in_latch && !m_tape_in && tape_in) { //logerror("-------- set tape in latch\n"); m_tape_in_latch = 0; m_pio->port_b_write(m_tape_in_latch << 7); } m_tape_in = tape_in; } break; case TIMER_ID_BLINK: m_blink = !m_blink; break; case TIMER_ID_VSYNC_ON: m_maincpu->set_input_line(INPUT_LINE_NMI, ASSERT_LINE); break; case TIMER_ID_VSYNC_OFF: m_maincpu->set_input_line(INPUT_LINE_NMI, CLEAR_LINE); break; case TIMER_ID_FAKE_KEYBOARD_SCAN: scan_keyboard(); break; case TIMER_ID_FAKE_KEYBOARD_CLEAR: m_key_data = 0; break; } } //------------------------------------------------- // MACHINE_START( abc80 ) //------------------------------------------------- void abc80_state::machine_start() { // start timers m_cassette_timer = timer_alloc(TIMER_ID_CASSETTE); m_cassette_timer->adjust(attotime::from_hz(44100), 0, attotime::from_hz(44100)); m_cassette_timer->enable(false); m_kb_timer = timer_alloc(TIMER_ID_FAKE_KEYBOARD_SCAN); m_kb_timer->adjust(attotime::from_usec(2500), 0, attotime::from_usec(2500)); // find memory regions m_mmu_rom = memregion("mmu")->base(); // register for state saving save_item(NAME(m_key_data)); save_item(NAME(m_key_strobe)); save_item(NAME(m_pio_astb)); save_item(NAME(m_tape_in)); save_item(NAME(m_tape_in_latch)); } //************************************************************************** // MACHINE DRIVERS //************************************************************************** //------------------------------------------------- // MACHINE_CONFIG( abc80 ) //------------------------------------------------- static MACHINE_CONFIG_START( abc80, abc80_state ) // basic machine hardware MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_11_9808MHz/2/2) // 2.9952 MHz MCFG_CPU_PROGRAM_MAP(abc80_mem) MCFG_CPU_IO_MAP(abc80_io) MCFG_CPU_CONFIG(abc80_daisy_chain) // video hardware MCFG_FRAGMENT_ADD(abc80_video) // sound hardware MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD(SN76477_TAG, SN76477, 0) MCFG_SOUND_CONFIG(csg_intf) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) // devices MCFG_Z80PIO_ADD(Z80PIO_TAG, XTAL_11_9808MHz/2/2, pio_intf) MCFG_CASSETTE_ADD(CASSETTE_TAG, abc80_cassette_interface) MCFG_ABC80_KEYBOARD_ADD(kb_intf) MCFG_ABCBUS_SLOT_ADD(ABCBUS_TAG, abcbus_intf, abcbus_cards, NULL, NULL) // "slow", abc830_slow) MCFG_RS232_PORT_ADD(RS232_TAG, rs232_intf, rs232_devices, NULL, NULL) // internal ram MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("16K") // software list MCFG_SOFTWARE_LIST_ADD("flop_list", "abc80") MACHINE_CONFIG_END //************************************************************************** // ROMS //************************************************************************** //------------------------------------------------- // ROM( abc80 ) //------------------------------------------------- ROM_START( abc80 ) ROM_REGION( 0x4000, Z80_TAG, 0 ) ROM_DEFAULT_BIOS("v2") ROM_SYSTEM_BIOS( 0, "v1", "V1" ) ROMX_LOAD( "3506_3.a5", 0x0000, 0x1000, CRC(7c004fb6) SHA1(9aee1d085122f4537c3e6ecdab9d799bd429ef52), ROM_BIOS(1) ) ROMX_LOAD( "3507_3.a3", 0x1000, 0x1000, CRC(d1850a84) SHA1(f7719f3af9173601a2aa23ae38ae00de1a387ad8), ROM_BIOS(1) ) ROMX_LOAD( "3508_3.a4", 0x2000, 0x1000, CRC(b55528e9) SHA1(3e5017e8cacad1f13215242f1bbd89d1d3eee131), ROM_BIOS(1) ) ROMX_LOAD( "3509_3.a2", 0x3000, 0x1000, CRC(659cab1e) SHA1(181db748cef22cdcccd311a60aa6189c85343db7), ROM_BIOS(1) ) ROM_SYSTEM_BIOS( 1, "v2", "V2" ) ROMX_LOAD( "3506_3_v2.a5", 0x0000, 0x1000, CRC(e2afbf48) SHA1(9883396edd334835a844dcaa792d29599a8c67b9), ROM_BIOS(2) ) ROMX_LOAD( "3507_3_v2.a3", 0x1000, 0x1000, CRC(d224412a) SHA1(30968054bba7c2aecb4d54864b75a446c1b8fdb1), ROM_BIOS(2) ) ROMX_LOAD( "3508_3_v2.a4", 0x2000, 0x1000, CRC(1502ba5b) SHA1(5df45909c2c4296e5701c6c99dfaa9b10b3a729b), ROM_BIOS(2) ) ROMX_LOAD( "3509_3_v2.a2", 0x3000, 0x1000, CRC(bc8860b7) SHA1(28b6cf7f5a4f81e017c2af091c3719657f981710), ROM_BIOS(2) ) ROM_REGION( 0xa00, "chargen", 0 ) ROM_LOAD( "sn74s263.h2", 0x0000, 0x0a00, BAD_DUMP CRC(9e064e91) SHA1(354783c8f2865f73dc55918c9810c66f3aca751f) ) // created by hand ROM_REGION( 0x100, "hsync", 0 ) ROM_LOAD( "abc80_11.k5", 0x0000, 0x0100, CRC(e4f7e018) SHA1(63e718a39537f37286ea183e6469808c271dbfa5) ) // "64 40029-01" 82S129 256x4 horizontal sync ROM_REGION( 0x200, "vsync", 0 ) ROM_LOAD( "abc80_21.k2", 0x0000, 0x0200, CRC(445a45b9) SHA1(bcc1c4fafe68b3500b03de785ca32abd63cea252) ) // "64 40030-01" 82S131 512x4 vertical sync ROM_REGION( 0x100, "attr", 0 ) ROM_LOAD( "abc80_12.j3", 0x0000, 0x0100, CRC(6c46811c) SHA1(2d3bdf2d3a2a88ddb1c0c637967e1b2b9541a928) ) // "64 40056-01" 82S129 256x4 attribute ROM_REGION( 0x200, "line", 0 ) ROM_LOAD( "abc80_22.k1", 0x0000, 0x0200, CRC(74de7a0b) SHA1(96f37b0ca65aa8af4242bad38124f410b7f657fe) ) // "64 40058-01" 82S131 512x4 chargen 74S263 row address ROM_REGION( 0x100, "mmu", 0 ) ROM_LOAD( "abc80_13.e7", 0x0000, 0x0100, CRC(f7738834) SHA1(b02df3e678fb50c9cb75b4a97615222d3b4577a3) ) // "64 40057-01" 82S129 256x4 address decoder ROM_END //************************************************************************** // SYSTEM DRIVERS //************************************************************************** // YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS COMP( 1978, abc80, 0, 0, abc80, abc80, driver_device, 0, "Luxor Datorer AB", "ABC 80", GAME_SUPPORTS_SAVE | GAME_IMPERFECT_KEYBOARD )