// license:BSD-3-Clause // copyright-holders:Curt Coder /*************************************************************************** Tektronix 4051/4052A Skeleton driver. http://www.electronixandmore.com/articles/teksystem.html ****************************************************************************/ /* TODO: - bank switch - keyboard - video (persistent vector display) - joystick - magnetic tape storage (3M 300) - communications backpack - 4051E01 ROM expander */ #include "includes/tek405x.h" //************************************************************************** // MACROS / CONSTANTS //************************************************************************** enum { LBS_RBC = 0, // ROM Bank Control LBS_BSOFL, // Bank Switch Overflow (Select Overflow ROMs) LBS_BSCOM, // Bank Switch Communication (Select Communication ROMs) LBS_INVALID, LBS_BS_L, // Bank Switch Left (Select Left ROM Pack) LBS_BS_R, // Bank Switch Right (Select Right ROM Pack) LBS_BSX_L, // Bank Switch Expander (Select Left ROM Expander Unit) LBS_BSX_R // Bank Switch Expander (Select Right ROM Expander Unit) }; //************************************************************************** // INTERRUPTS //************************************************************************** //------------------------------------------------- // update_irq - //------------------------------------------------- void tek4051_state::update_irq() { int state = m_kb_pia_irqa | m_kb_pia_irqb | m_x_pia_irqa | m_x_pia_irqb | m_gpib_pia_irqa | m_gpib_pia_irqb | m_com_pia_irqa | m_com_pia_irqb | m_acia_irq; m_maincpu->set_input_line(INPUT_LINE_IRQ0, state); } //------------------------------------------------- // update_nmi - //------------------------------------------------- void tek4051_state::update_nmi() { int state = m_y_pia_irqa | m_y_pia_irqb | m_tape_pia_irqa | m_tape_pia_irqb; m_maincpu->set_input_line(INPUT_LINE_NMI, state); } //************************************************************************** // KEYBOARD //************************************************************************** //------------------------------------------------- // scan_keyboard - scan keyboard //------------------------------------------------- void tek4051_state::scan_keyboard() { } //------------------------------------------------- // TIMER_DEVICE_CALLBACK_MEMBER( keyboard_tick ) //------------------------------------------------- TIMER_DEVICE_CALLBACK_MEMBER(tek4051_state::keyboard_tick) { scan_keyboard(); } //************************************************************************** // MEMORY BANKING //************************************************************************** //------------------------------------------------- // bankswitch - //------------------------------------------------- void tek4051_state::bankswitch(UINT8 data) { address_space &program = m_maincpu->space(AS_PROGRAM); //int d = data & 0x07; int lbs = (data >> 3) & 0x07; switch (lbs) { case LBS_RBC: program.install_rom(0x8800, 0xa7ff, m_rom->base() + 0x800); break; case LBS_BSOFL: program.install_rom(0x8800, 0xa7ff, m_bsofl_rom->base()); break; case LBS_BSCOM: program.install_rom(0x8800, 0xa7ff, m_bscom_rom->base()); break; default: program.unmap_readwrite(0x8800, 0xa7ff); } } WRITE8_MEMBER( tek4051_state::lbs_w ) { /* bit description 0 ROM Expander Slot Address 1 ROM Expander Slot Address 2 ROM Expander Slot Address 3 Bank Switch 4 Bank Switch 5 Bank Switch 6 7 */ logerror("LBS %02x\n", data); bankswitch(data); } //************************************************************************** // ADDRESS MAPS //************************************************************************** //------------------------------------------------- // ADDRESS_MAP( tek4051_mem ) //------------------------------------------------- static ADDRESS_MAP_START( tek4051_mem, AS_PROGRAM, 8, tek4051_state ) AM_RANGE(0x0000, 0x1fff) AM_RAM AM_RANGE(0x2000, 0x7fff) AM_RAM // optional RAM AM_RANGE(0x8000, 0x877f) AM_ROM AM_REGION(MC6800_TAG, 0) AM_RANGE(0x878c, 0x878f) AM_DEVREADWRITE(MC6820_Y_TAG, pia6821_device, read, write) AM_RANGE(0x8794, 0x8797) AM_DEVREADWRITE(MC6820_X_TAG, pia6821_device, read, write) AM_RANGE(0x8798, 0x879b) AM_DEVREADWRITE(MC6820_TAPE_TAG, pia6821_device, read, write) AM_RANGE(0x87a8, 0x87ab) AM_DEVREADWRITE(MC6820_KB_TAG, pia6821_device, read, write) AM_RANGE(0x87b0, 0x87b3) AM_DEVREADWRITE(MC6820_GPIB_TAG, pia6821_device, read, write) AM_RANGE(0x87c0, 0x87c0) AM_MIRROR(0x03) AM_WRITE(lbs_w) // AM_RANGE(0x87c0, 0x87c3) AM_DEVREADWRITE(MC6820_COM_TAG, pia6821_device, read, write) // AM_RANGE(0x87c4, 0x87c4) AM_MIRROR(0x02) AM_DEVREADWRITE(MC6850_TAG, acia6850_device, status_r, control_w) // AM_RANGE(0x87c5, 0x87c5) AM_MIRROR(0x02) AM_DEVREADWRITE(MC6850_TAG, acia6850_device, data_r, data_w) // AM_RANGE(0x87c8, 0x87cb) XPC2 // AM_RANGE(0x87cc, 0x87cf) XPC3 // AM_RANGE(0x87d0, 0x87d3) XPC4 AM_RANGE(0x8800, 0xa7ff) AM_ROM AM_REGION(MC6800_TAG, 0x800) AM_RANGE(0xa800, 0xffff) AM_ROM AM_REGION(MC6800_TAG, 0x2800) ADDRESS_MAP_END //------------------------------------------------- // ADDRESS_MAP( tek4052_mem ) //------------------------------------------------- static ADDRESS_MAP_START( tek4052_mem, AS_PROGRAM, 8, tek4052_state ) ADDRESS_MAP_END //************************************************************************** // INPUT PORTS //************************************************************************** //------------------------------------------------- // INPUT_PORTS( tek4051 ) //------------------------------------------------- static INPUT_PORTS_START( tek4051 ) PORT_START("Y0") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_START("Y1") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_START("Y2") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_START("Y3") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_START("Y4") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_START("Y5") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_START("Y6") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_START("Y7") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_START("Y8") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_START("Y9") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_START("Y10") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_START("Y11") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_START("Y12") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_START("Y13") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_START("Y14") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_START("Y15") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_START("SPECIAL") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Left SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Right SHIFT") PORT_CODE(KEYCODE_RSHIFT) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_MAMEKEY(LCONTROL)) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("TTY LOCK") PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) INPUT_PORTS_END //************************************************************************** // VIDEO //************************************************************************** void tek4051_state::video_start() { } void tek4052_state::video_start() { } //************************************************************************** // DEVICE CONFIGURATION //************************************************************************** READ8_MEMBER( tek4051_state::x_pia_pa_r ) { /* bit description PA0 PA1 PA2 DRBUSY-0 PA3 VPULSE-1 PA4 PA5 PA6 PA7 */ return 0; } WRITE8_MEMBER( tek4051_state::x_pia_pa_w ) { /* bit description PA0 X D/A PA1 X D/A PA2 PA3 PA4 ERASE-0 PA5 COPY-0 PA6 VECTOR-0 PA7 VEN-1 */ } WRITE8_MEMBER( tek4051_state::x_pia_pb_w ) { /* bit description PB0 X D/A PB1 X D/A PB2 X D/A PB3 X D/A PB4 X D/A PB5 X D/A PB6 X D/A PB7 X D/A */ } WRITE_LINE_MEMBER( tek4051_state::adot_w ) { } WRITE_LINE_MEMBER( tek4051_state::bufclk_w ) { } WRITE_LINE_MEMBER( tek4051_state::x_pia_irqa_w ) { m_x_pia_irqa = state; update_irq(); } WRITE_LINE_MEMBER( tek4051_state::x_pia_irqb_w ) { m_x_pia_irqb = state; update_irq(); } READ8_MEMBER( tek4051_state::sa_r ) { /* bit description PA0 SA0 PA1 SA1 PA2 SA2 PA3 SA3 PA4 SA4 PA5 SA5 PA6 SA6 PA7 SA7 */ return 0; } WRITE8_MEMBER( tek4051_state::y_pia_pa_w ) { /* bit description PA0 Y D/A PA1 Y D/A PA2 Y CHAR D/A PA3 Y CHAR D/A PA4 Y CHAR D/A PA5 X CHAR D/A PA6 X CHAR D/A PA7 X CHAR D/A */ } WRITE8_MEMBER( tek4051_state::sb_w ) { /* bit description PB0 SB0 PB1 SB1 PB2 SB2 PB3 SB3 PB4 SB4 PB5 SB5 PB6 SB6 PB7 SB7 */ } WRITE_LINE_MEMBER( tek4051_state::sot_w ) { } WRITE_LINE_MEMBER( tek4051_state::y_pia_irqa_w ) { m_y_pia_irqa = state; update_nmi(); } WRITE_LINE_MEMBER( tek4051_state::y_pia_irqb_w ) { m_y_pia_irqb = state; update_nmi(); } READ8_MEMBER( tek4051_state::kb_pia_pa_r ) { /* bit description PA0 KC0-1 PA1 KC1-1 PA2 KC2-1 PA3 KC3-1 PA4 KC4-1 PA5 KC5-1 PA6 KC6-1 PA7 TTY-0 */ UINT8 data = 0; UINT8 special = m_special->read(); // keyboard column data = m_kc; // TTY lock data |= BIT(special, 3) << 7; return data; } READ8_MEMBER( tek4051_state::kb_pia_pb_r ) { /* bit description PB0 SHIFT-0 PB1 CTRL-0 PB2 PB3 LOAD-0 PB4 PB5 PB6 PB7 */ UINT8 data = 0; UINT8 special = m_special->read(); // shift data |= (BIT(special, 0) & BIT(special, 1)); // ctrl data |= BIT(special, 2) << 1; return data; } WRITE8_MEMBER( tek4051_state::kb_pia_pb_w ) { /* bit description PB0 PB1 PB2 PB3 PB4 EOI-1 PB5 BREAK-1 PB6 I/O-1 PB7 BUSY-1/REN-0/SPEAKER */ // lamps output_set_led_value(1, !BIT(data, 5)); output_set_led_value(2, !BIT(data, 6)); output_set_led_value(3, !BIT(data, 7)); // end or identify m_gpib->eoi_w(!BIT(data, 4)); // speaker m_speaker->level_w(!BIT(data, 7)); // remote enable m_gpib->ren_w(!BIT(data, 7)); } WRITE_LINE_MEMBER( tek4051_state::kb_halt_w ) { } WRITE_LINE_MEMBER( tek4051_state::kb_pia_irqa_w ) { m_kb_pia_irqa = state; update_irq(); } WRITE_LINE_MEMBER( tek4051_state::kb_pia_irqb_w ) { m_kb_pia_irqb = state; update_irq(); } READ8_MEMBER( tek4051_state::tape_pia_pa_r ) { /* bit description PA0 DELAY OUT-1 PA1 PA2 TUTS-1 PA3 SAFE-1 PA4 SAFE-1 PA5 JOYSTICK PA6 FILFND-1 PA7 JOYSTICK */ return 0; } WRITE8_MEMBER( tek4051_state::tape_pia_pa_w ) { /* bit description PA0 PA1 LDCLK-1 PA2 PA3 PA4 PA5 XERR-1 PA6 PA7 YERR-1 */ } WRITE8_MEMBER( tek4051_state::tape_pia_pb_w ) { /* bit description PB0 WR-0 PB1 FAST-1 PB2 REV-1 PB3 DRTAPE-0 PB4 GICG-1 PB5 FICG-1 PB6 WENABLE-1 PB7 FSENABLE-0 */ } WRITE_LINE_MEMBER( tek4051_state::tape_pia_irqa_w ) { m_tape_pia_irqa = state; update_nmi(); } WRITE_LINE_MEMBER( tek4051_state::tape_pia_irqb_w ) { m_tape_pia_irqb = state; update_nmi(); } WRITE8_MEMBER( tek4051_state::dio_w ) { /* bit description PA0 DIO1-1 PA1 DIO2-1 PA2 DIO3-1 PA3 DIO4-1 PA4 DIO5-1 PA5 DIO6-1 PA6 DIO7-1 PA7 DIO8-1 */ if (m_talk) { m_gpib->dio_w(data); } } READ8_MEMBER( tek4051_state::gpib_pia_pb_r ) { /* bit description PB0 PB1 PB2 PB3 PB4 NRFD PB5 SRQ-1 PB6 DAV-1 PB7 NDAC */ UINT8 data = 0; // service request data |= m_gpib->srq_r() << 5; // data valid data |= m_gpib->dav_r() << 6; if (!m_talk) { // not ready for data data |= m_gpib->nrfd_r() << 4; // not data acknowledged data |= m_gpib->ndac_r() << 7; } return data; } WRITE8_MEMBER( tek4051_state::gpib_pia_pb_w ) { /* bit description PB0 EOI-1 PB1 IFC-1 PB2 PB3 ATN-0 PB4 NRFD PB5 PB6 PB7 NDAC */ // end or identify m_gpib->eoi_w(!BIT(data, 0)); // interface clear m_gpib->ifc_w(!BIT(data, 1)); // attention m_gpib->atn_w(BIT(data, 3)); if (m_talk) { // not ready for data m_gpib->nrfd_w(!BIT(data, 4)); // not data acknowledged m_gpib->ndac_w(!BIT(data, 7)); } } WRITE_LINE_MEMBER( tek4051_state::talk_w ) { m_talk = state; if (!m_talk) { m_gpib->dio_w(0xff); m_gpib->nrfd_w(1); m_gpib->ndac_w(1); } } WRITE_LINE_MEMBER( tek4051_state::gpib_pia_irqa_w ) { m_gpib_pia_irqa = state; update_irq(); } WRITE_LINE_MEMBER( tek4051_state::gpib_pia_irqb_w ) { m_gpib_pia_irqb = state; update_irq(); } WRITE8_MEMBER( tek4051_state::com_pia_pa_w ) { /* bit description PA0 PA1 PA2 PA3 Bank Switch Register PA4 Bank Switch Register PA5 Bank Switch Register PA6 PA7 */ bankswitch(data); } READ8_MEMBER( tek4051_state::com_pia_pb_r ) { /* bit description PB0 SRX PB1 DTR PB2 RTS PB3 PB4 PB5 PB6 PB7 */ UINT8 data = 0; // data terminal ready // request to send return data; } WRITE8_MEMBER( tek4051_state::com_pia_pb_w ) { /* bit description PB0 PB1 PB2 PB3 CTS PB4 STXA-C PB5 Baud Rate Select PB6 Baud Rate Select PB7 Baud Rate Select */ // clear to send // baud rate select int osc = BIT(data, 7) ? 28160 : 38400; int div = 1; switch ((data >> 5) & 0x03) { case 2: div = 4; break; case 3: div = 2; break; } m_acia_clock->set_unscaled_clock(osc); m_acia_clock->set_clock_scale((double) 1 / div); } WRITE_LINE_MEMBER( tek4051_state::com_pia_irqa_w ) { m_com_pia_irqa = state; update_irq(); } WRITE_LINE_MEMBER( tek4051_state::com_pia_irqb_w ) { m_com_pia_irqb = state; update_irq(); } WRITE_LINE_MEMBER( tek4051_state::acia_irq_w ) { m_acia_irq = state; update_irq(); } WRITE_LINE_MEMBER( tek4051_state::write_acia_clock ) { m_acia->write_txc(state); m_acia->write_rxc(state); } //************************************************************************** // MACHINE INITIALIZATION //************************************************************************** //------------------------------------------------- // MACHINE_START( tek4051 ) //------------------------------------------------- void tek4051_state::machine_start() { address_space &program = m_maincpu->space(AS_PROGRAM); // configure RAM switch (m_ram->size()) { case 8*1024: program.unmap_readwrite(0x2000, 0x7fff); break; case 16*1024: program.unmap_readwrite(0x4000, 0x7fff); break; case 24*1024: program.unmap_readwrite(0x6000, 0x7fff); break; } // register for state saving } //------------------------------------------------- // MACHINE_START( tek4052 ) //------------------------------------------------- void tek4052_state::machine_start() { } //************************************************************************** // MACHINE CONFIGURATION //************************************************************************** //------------------------------------------------- // MACHINE_CONFIG( tek4051 ) //------------------------------------------------- static MACHINE_CONFIG_START( tek4051, tek4051_state ) // basic machine hardware MCFG_CPU_ADD(MC6800_TAG, M6800, XTAL_12_5MHz/15) MCFG_CPU_PROGRAM_MAP(tek4051_mem) // video hardware MCFG_VECTOR_ADD("vector") MCFG_SCREEN_ADD(SCREEN_TAG, VECTOR) MCFG_SCREEN_REFRESH_RATE(50) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) // not accurate MCFG_SCREEN_SIZE(1024, 780) MCFG_SCREEN_VISIBLE_AREA(0, 1024-1, 0, 780-1) MCFG_SCREEN_UPDATE_DEVICE("vector", vector_device, screen_update) MCFG_PALETTE_ADD_MONOCHROME_GREEN("palette") // sound hardware MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) // devices MCFG_TIMER_DRIVER_ADD_PERIODIC("keyboard", tek4051_state, keyboard_tick, attotime::from_hz(XTAL_12_5MHz/15/4)) MCFG_DEVICE_ADD(MC6820_X_TAG, PIA6821, 0) MCFG_PIA_READPA_HANDLER(READ8(tek4051_state, x_pia_pa_r)) // CB1 viewcause MCFG_PIA_WRITEPA_HANDLER(WRITE8(tek4051_state, x_pia_pa_w)) MCFG_PIA_WRITEPB_HANDLER(WRITE8(tek4051_state, x_pia_pb_w)) MCFG_PIA_CA2_HANDLER(WRITELINE(tek4051_state, adot_w)) MCFG_PIA_CB2_HANDLER(WRITELINE(tek4051_state, bufclk_w)) MCFG_PIA_IRQA_HANDLER(WRITELINE(tek4051_state, x_pia_irqa_w)) MCFG_PIA_IRQB_HANDLER(WRITELINE(tek4051_state, x_pia_irqb_w)) MCFG_DEVICE_ADD(MC6820_Y_TAG, PIA6821, 0) MCFG_PIA_READPA_HANDLER(READ8(tek4051_state, sa_r)) // CA1 rdbyte // CB1 mdata // CB2 fmark MCFG_PIA_WRITEPA_HANDLER(WRITE8(tek4051_state, y_pia_pa_w)) MCFG_PIA_WRITEPB_HANDLER(WRITE8(tek4051_state, sb_w)) MCFG_PIA_CA2_HANDLER(WRITELINE(tek4051_state, sot_w)) MCFG_PIA_IRQA_HANDLER(WRITELINE(tek4051_state, y_pia_irqa_w)) MCFG_PIA_IRQB_HANDLER(WRITELINE(tek4051_state, y_pia_irqb_w)) MCFG_DEVICE_ADD(MC6820_KB_TAG, PIA6821, 0) MCFG_PIA_READPA_HANDLER(READ8(tek4051_state, kb_pia_pa_r)) MCFG_PIA_READPB_HANDLER(READ8(tek4051_state, kb_pia_pb_r)) // CA1 key MCFG_PIA_WRITEPB_HANDLER(WRITE8(tek4051_state, kb_pia_pb_w)) MCFG_PIA_CA2_HANDLER(WRITELINE(tek4051_state, kb_halt_w)) MCFG_PIA_IRQA_HANDLER(WRITELINE(tek4051_state, kb_pia_irqa_w)) MCFG_PIA_IRQB_HANDLER(WRITELINE(tek4051_state, kb_pia_irqb_w)) MCFG_DEVICE_ADD(MC6820_TAPE_TAG, PIA6821, 0) MCFG_PIA_READPA_HANDLER(READ8(tek4051_state, tape_pia_pa_r)) // CA1 rmark // CB1 lohole // CA2 filfnd // CB2 uphole MCFG_PIA_WRITEPA_HANDLER(WRITE8(tek4051_state, tape_pia_pa_w)) MCFG_PIA_WRITEPB_HANDLER(WRITE8(tek4051_state, tape_pia_pb_w)) MCFG_PIA_IRQA_HANDLER(WRITELINE(tek4051_state, tape_pia_irqa_w)) MCFG_PIA_IRQB_HANDLER(WRITELINE(tek4051_state, tape_pia_irqb_w)) MCFG_DEVICE_ADD(MC6820_GPIB_TAG, PIA6821, 0) MCFG_PIA_READPA_HANDLER(DEVREAD8(IEEE488_TAG, ieee488_device, dio_r)) MCFG_PIA_READPB_HANDLER(READ8(tek4051_state, gpib_pia_pb_r)) MCFG_PIA_WRITEPA_HANDLER(WRITE8(tek4051_state, dio_w)) MCFG_PIA_WRITEPB_HANDLER(WRITE8(tek4051_state, gpib_pia_pb_w)) MCFG_PIA_CB2_HANDLER(WRITELINE(tek4051_state, talk_w)) MCFG_PIA_IRQA_HANDLER(WRITELINE(tek4051_state, gpib_pia_irqa_w)) MCFG_PIA_IRQB_HANDLER(WRITELINE(tek4051_state, gpib_pia_irqb_w)) MCFG_DEVICE_ADD(MC6820_COM_TAG, PIA6821, 0) MCFG_PIA_READPB_HANDLER(READ8(tek4051_state, com_pia_pb_r)) //CA1 - SRX (RS-232 pin 12) MCFG_PIA_WRITEPA_HANDLER(WRITE8(tek4051_state, com_pia_pa_w)) MCFG_PIA_WRITEPB_HANDLER(WRITE8(tek4051_state, com_pia_pb_w)) MCFG_PIA_IRQA_HANDLER(WRITELINE(tek4051_state, com_pia_irqa_w)) MCFG_PIA_IRQB_HANDLER(WRITELINE(tek4051_state, com_pia_irqb_w)) MCFG_DEVICE_ADD(MC6850_TAG, ACIA6850, 0) MCFG_ACIA6850_IRQ_HANDLER(WRITELINE(tek4051_state, acia_irq_w)) MCFG_DEVICE_ADD("acia_clock", CLOCK, 38400) MCFG_CLOCK_SIGNAL_HANDLER(WRITELINE(tek4051_state, write_acia_clock)) MCFG_IEEE488_BUS_ADD() MCFG_IEEE488_EOI_CALLBACK(DEVWRITELINE(MC6820_GPIB_TAG, pia6821_device, ca1_w)) MCFG_IEEE488_SRQ_CALLBACK(DEVWRITELINE(MC6820_GPIB_TAG, pia6821_device, cb1_w)) // internal ram MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("8K") MCFG_RAM_EXTRA_OPTIONS("16K,24K,32K") // cartridge MCFG_CARTSLOT_ADD("cart1") MCFG_CARTSLOT_EXTENSION_LIST("bin") MCFG_CARTSLOT_INTERFACE("tek4050_cart") MCFG_CARTSLOT_ADD("cart2") MCFG_CARTSLOT_EXTENSION_LIST("bin") MCFG_CARTSLOT_INTERFACE("tek4050_cart") MACHINE_CONFIG_END //------------------------------------------------- // MACHINE_CONFIG( tek4052 ) //------------------------------------------------- static MACHINE_CONFIG_START( tek4052, tek4052_state ) // basic machine hardware MCFG_CPU_ADD(AM2901A_TAG, M6800, 1000000) // should be 4x AM2901A + AM2911 MCFG_CPU_PROGRAM_MAP(tek4052_mem) // video hardware MCFG_VECTOR_ADD("vector") MCFG_SCREEN_ADD(SCREEN_TAG, VECTOR) MCFG_SCREEN_REFRESH_RATE(50) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) // not accurate MCFG_SCREEN_SIZE(1024, 780) MCFG_SCREEN_VISIBLE_AREA(0, 1024-1, 0, 780-1) MCFG_SCREEN_UPDATE_DEVICE("vector", vector_device, screen_update) MCFG_PALETTE_ADD_MONOCHROME_GREEN("palette") // sound hardware MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) // internal ram MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("32K") MCFG_RAM_EXTRA_OPTIONS("64K") // cartridge MCFG_CARTSLOT_ADD("cart1") MCFG_CARTSLOT_EXTENSION_LIST("bin") MCFG_CARTSLOT_INTERFACE("tek4050_cart") MCFG_CARTSLOT_ADD("cart2") MCFG_CARTSLOT_EXTENSION_LIST("bin") MCFG_CARTSLOT_INTERFACE("tek4050_cart") // software lists MCFG_SOFTWARE_LIST_ADD("cart_list", "tek4052_cart") MACHINE_CONFIG_END //------------------------------------------------- // MACHINE_CONFIG( tek4054 ) //------------------------------------------------- /* static MACHINE_CONFIG_START( tek4054, tek4052_state ) MCFG_SCREEN_SIZE(4096, 3125) MCFG_SCREEN_VISIBLE_AREA(0, 4096-1, 0, 3125-1) MACHINE_CONFIG_END */ //************************************************************************** // ROMS //************************************************************************** //------------------------------------------------- // ROM( tek4051 ) //------------------------------------------------- ROM_START( tek4051 ) ROM_REGION( 0x8000, MC6800_TAG, 0 ) ROM_LOAD( "156-0659-xx.u585", 0x0000, 0x0800, CRC(0017ba54) SHA1(533bfacb2e698c1df88a00acce6df6a8c536239d) ) // -01 or -02 ? ROM_LOAD( "156-0660-01.u581", 0x0800, 0x0800, CRC(c4e302e8) SHA1(a0438cbc70ddc1bab000e30c0f835f0948aae969) ) ROM_LOAD( "156-0661-01.u487", 0x1000, 0x0800, CRC(edb097c8) SHA1(a07b777b6b20de496089730db8097b65b9a8ef31) ) ROM_LOAD( "156-0662-01.u485", 0x1800, 0x0800, CRC(0a3af548) SHA1(01bcffa7d55b2585348ea96852b4319c6454d19a) ) ROM_LOAD( "156-0663-01.u481", 0x2000, 0x0800, CRC(f220d24c) SHA1(fb5dc8a617f4b4d5c094c0cbabb9af158c19c2c2) ) ROM_LOAD( "156-0664-xx.u385", 0x2800, 0x0800, CRC(aa1ae67d) SHA1(8816654c1b0ad0230bf5027f68c2ec1d315ad188) ) // -01 or -02 ? ROM_LOAD( "156-0665-xx.u381", 0x3000, 0x0800, CRC(90497138) SHA1(2d6bbe169a434581a49fffcab0d2ca18107b67da) ) // -01 or -02 ? ROM_LOAD( "156-0666-01.u285", 0x3800, 0x0800, CRC(c35ce405) SHA1(10cae122d000fe2886228a178a1a4e4d3ec2c3f5) ) ROM_LOAD( "156-0667-xx.u595", 0x4000, 0x0800, CRC(e1723a06) SHA1(dde3e64eb6acc77d8e7234235a99ec338cc74717) ) // -01 or -02 ? ROM_LOAD( "156-0668-xx.u591", 0x4800, 0x0800, CRC(d8b80d7a) SHA1(6c1f00fa2f9ff6ebd84268c2100637ddbdb3bae6) ) // -01 or -02 ? ROM_LOAD( "156-0669-01.u497", 0x5000, 0x0800, CRC(f760ed39) SHA1(2b30d20d880002ce3950ee7abe40f4e1539208cc) ) ROM_LOAD( "156-0670-01.u495", 0x5800, 0x0800, CRC(d40a303d) SHA1(111b399f6178e2fe50b1368536f290d4df9883fc) ) ROM_LOAD( "156-0671-xx.u491", 0x6000, 0x0800, CRC(32060b64) SHA1(af254dc068686fcd7584128258724fd5415ea458) ) // -01 or -02 ? ROM_LOAD( "156-0672-xx.u395", 0x6800, 0x0800, CRC(93ad68d1) SHA1(8242058bfc89d11cd9ae82d967410714875eface) ) // -01 or -02 ? ROM_LOAD( "156-0673-xx.u391", 0x7000, 0x0800, CRC(ee1f5d4c) SHA1(a6fb8347a0dfa94268f091fb7ca091c8bfabeabd) ) // -01 or -02 or -03 ? ROM_LOAD( "156-0674-xx.u295", 0x7800, 0x0800, CRC(50582341) SHA1(1a028176e5d5ca83012e2f75e9daad88cd7d8fc3) ) // -01 or -02 ? ROM_REGION( 0x2000, "020_0147_00", 0 ) // Firmware Backpack (020-0147-00) ROM_LOAD( "156-0747-xx.u101", 0x0000, 0x0800, CRC(9e1facc1) SHA1(7e7a118c3e8c49630f630ee02c3de843dd95d7e1) ) // -00 or -01 ? ROM_LOAD( "156-0748-xx.u201", 0x0800, 0x0800, CRC(be42bfbf) SHA1(23575b411bd9dcb7d7116628820096e3064ff93b) ) // -00 or -01 ? ROM_REGION( 0x2000, "021_0188_00", 0 ) // Communications Backpack (021-0188-00) ROM_LOAD( "156-0712-00.u101", 0x0000, 0x0800, NO_DUMP ) ROM_LOAD( "156-0712-01.u101", 0x0000, 0x0800, NO_DUMP ) ROM_LOAD( "156-0713-00.u111", 0x0800, 0x0800, NO_DUMP ) ROM_LOAD( "156-0713-01.u111", 0x0800, 0x0800, NO_DUMP ) ROM_LOAD( "156-0714-00.u121", 0x1000, 0x0800, NO_DUMP ) ROM_LOAD( "156-0714-01.u121", 0x1000, 0x0800, NO_DUMP ) ROM_LOAD( "156-0715-01.u131", 0x1800, 0x0800, NO_DUMP ) /* ROM_REGION( 0x2000, "4051r01", 0 ) // 4051R01 Matrix Functions ROM_LOAD( "4051r01", 0x0000, 0x1000, NO_DUMP ) ROM_REGION( 0x2000, "4051r05", 0 ) // 4051R05 Binary Program Loader ROM_LOAD( "156-0856-00.u1", 0x0000, 0x0800, NO_DUMP ) ROM_LOAD( "156-0857-00.u11", 0x0800, 0x0800, NO_DUMP ) ROM_REGION( 0x2000, "4051r06", 0 ) // 4051R06 Editor ROM_LOAD( "4051r06", 0x0000, 0x1000, NO_DUMP ) */ ROM_END //------------------------------------------------- // ROM( tek4052a ) //------------------------------------------------- ROM_START( tek4052a ) ROM_REGION( 0x3800, AM2901A_TAG, 0 ) // ALU 670-7705-00 microcode ROM_LOAD( "160-1689-00.u340", 0x0000, 0x0800, CRC(97ff62d4) SHA1(e25b495fd1b3f8a5bfef5c8f20efacde8366e89c) ) ROM_LOAD( "160-1688-00.u335", 0x0800, 0x0800, CRC(19033422) SHA1(0f6ea45be5123701940331c4278bcdc5db4f4147) ) ROM_LOAD( "160-1687-00.u330", 0x1000, 0x0800, CRC(3b2e37dd) SHA1(294b626d0022fbf9bec50680b6b932f21a3cb049) ) ROM_LOAD( "160-1686-00.u320", 0x1800, 0x0800, CRC(7916cd64) SHA1(d6b3ed783e488667ca203ec605aa27d78261c61b) ) ROM_LOAD( "160-1695-00.u315", 0x2000, 0x0800, CRC(cdac76a7) SHA1(2a47f34ae63fb7fe96e7c6fc92ca4f629b0e31ec) ) ROM_LOAD( "160-1694-00.u305", 0x2800, 0x0800, CRC(c33ae212) SHA1(25ed4cc3600391fbc93bb46c92d3f64ca2aca58e) ) ROM_LOAD( "160-1693-00.u300", 0x3000, 0x0800, CRC(651b7af2) SHA1(7255c682cf74f2e77661d77c8406b36a567eea46) ) ROM_REGION( 0x14000, "672_0799_08", 0 ) // Memory Access Sequencer 672-0799-08 ROM_LOAD16_BYTE( "160-1698-00.u810", 0x00000, 0x2000, CRC(fd0b8bc3) SHA1(ea9caa151295024267a467ba636ad41aa0c517d3) ) ROM_LOAD16_BYTE( "160-1682-00.u893", 0x00001, 0x2000, CRC(d54104ef) SHA1(b796c320c8f96f6e4b845718bfb62ccb5903f2db) ) ROM_LOAD16_BYTE( "160-1699-00.u820", 0x04000, 0x2000, CRC(59cc6c2e) SHA1(b6d85cdfaaef360af2a4fc44eae55e512bb08b21) ) ROM_LOAD16_BYTE( "160-1684-00.u870", 0x04001, 0x2000, CRC(b24cdbaf) SHA1(476032624110bc5c7a7f30d10458e8baffb2f2ff) ) ROM_LOAD16_BYTE( "160-1700-00.u825", 0x08000, 0x2000, CRC(59f4a4e2) SHA1(81b5f74ec14bb13735382abc123bb9b09dfb7a63) ) ROM_LOAD16_BYTE( "160-1683-00.u880", 0x08001, 0x2000, CRC(f6bb15d1) SHA1(eca06211876c12236cfeae0417131e8f04728d51) ) ROM_LOAD16_BYTE( "160-1701-00.u835", 0x0c000, 0x2000, CRC(195988b9) SHA1(995a77963e869f1a461addf58db9ecbf2b9222ba) ) ROM_LOAD16_BYTE( "160-1691-00.u885", 0x0c001, 0x2000, CRC(0670bf9e) SHA1(a8c39bd7f3f61436296c6bc5f734354371ae8123) ) ROM_LOAD16_BYTE( "160-1702-00.u845", 0x10000, 0x2000, CRC(013344b1) SHA1(4a79654427e15d0fcedd9519914f6448938ecffd) ) ROM_LOAD16_BYTE( "160-1685-00.u863", 0x10001, 0x2000, CRC(53ddc8f9) SHA1(431d6f329dedebb54232c623a924d5ecddc5e44e) ) ROM_REGION( 0x2000, "020_0147_00", 0 ) // Firmware Backpack (020-0147-00) ROM_LOAD( "156-0747-xx.u101", 0x0000, 0x0800, CRC(9e1facc1) SHA1(7e7a118c3e8c49630f630ee02c3de843dd95d7e1) ) // -00 or -01 ? ROM_LOAD( "156-0748-xx.u201", 0x0800, 0x0800, CRC(be42bfbf) SHA1(23575b411bd9dcb7d7116628820096e3064ff93b) ) // -00 or -01 ? ROM_REGION( 0x2000, "021_0188_00", 0 ) // Communications Backpack (021-0188-00) ROM_LOAD( "156-0712-00.u101", 0x0000, 0x0800, NO_DUMP ) ROM_LOAD( "156-0712-01.u101", 0x0000, 0x0800, NO_DUMP ) ROM_LOAD( "156-0713-00.u111", 0x0800, 0x0800, NO_DUMP ) ROM_LOAD( "156-0713-01.u111", 0x0800, 0x0800, NO_DUMP ) ROM_LOAD( "156-0714-00.u121", 0x1000, 0x0800, NO_DUMP ) ROM_LOAD( "156-0714-01.u121", 0x1000, 0x0800, NO_DUMP ) ROM_LOAD( "156-0715-01.u131", 0x1800, 0x0800, NO_DUMP ) ROM_END //************************************************************************** // SYSTEM DRIVERS //************************************************************************** /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ COMP( 1975, tek4051, 0, 0, tek4051, tek4051, driver_device, 0, "Tektronix", "Tektronix 4051", GAME_NOT_WORKING ) COMP( 1978, tek4052a, tek4051, 0, tek4052, tek4051, driver_device, 0, "Tektronix", "Tektronix 4052A", GAME_NOT_WORKING ) //COMP( 1979, tek4054, tek4051, 0, tek4054, tek4054, driver_device, 0, "Tektronix", "Tektronix 4054", GAME_NOT_WORKING )