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Diffstat (limited to 'src/mame/drivers/qtsbc.cpp')
-rw-r--r--src/mame/drivers/qtsbc.cpp512
1 files changed, 0 insertions, 512 deletions
diff --git a/src/mame/drivers/qtsbc.cpp b/src/mame/drivers/qtsbc.cpp
deleted file mode 100644
index eea67dee318..00000000000
--- a/src/mame/drivers/qtsbc.cpp
+++ /dev/null
@@ -1,512 +0,0 @@
-// license:BSD-3-Clause
-// copyright-holders:AJR
-/***************************************************************************
-
-QT Computer Systems SBC +2/4
-
-This looks like the same system as the Compu/Time SBC-880 Processor Board.
-
-Currently it crashes. There's a memory move routine at 50A4, and after
-a few turns it is told to move E603 bytes which corrupts everything.
-
-Chips: P8251, D8253C, MK3880N-4 (Z80). 3x 6-sw dips. Unmarked crystal.
- EPROM: D2716-2; RAM: 2x MM2114N-3L.
-
-A blue jumper marked 4M and 2M (between U11 and U12) selects the CPU clock.
-
-The RS232 port uses a 26-pin header (J1) rather than the conventional DB25
-connector. The second 26-pin header (J2) is for the parallel port.
-
-Feature list from QT ad:
-- 1K RAM (which can be located at any 1K boundary) plus one each
- Parallel and Serial I/O ports on board
-- Power on jump to onboard EPROM (2708 or 2716)
-- EPROM addressable on any 1K or 2K boundary
-- Full 64K use of RAM allowed in shadow mode
-- Programmable Baud rate selection, 110-9600
-- 2 or 4MHz switch selectable
-- DMA capability allows MWRT signal generation on CPU board or elsewhere
- in system under DMA logic or front panel control
-- Two programmable timers available for use by programs run with the
- SBC+2/4 (timer output and controls available at parallel I/O connector;
- parallel input and output ports available for use on CPU board).
-
-****************************************************************************/
-
-#include "emu.h"
-#include "cpu/z80/z80.h"
-#include "machine/i8251.h"
-#include "machine/pit8253.h"
-#include "bus/rs232/rs232.h"
-//#include "bus/s100/s100.h"
-
-
-class qtsbc_state : public driver_device
-{
-public:
- qtsbc_state(const machine_config &mconfig, device_type type, const char *tag)
- : driver_device(mconfig, type, tag)
- , m_maincpu(*this, "maincpu")
- , m_pit(*this, "pit")
- , m_usart(*this, "usart")
- , m_rs232(*this, "rs232")
- , m_dsw(*this, "DSW%u", 1)
- , m_jumpers(*this, "JUMPERS")
- , m_cpu_speed(*this, "SPEED")
- , m_eprom(*this, "maincpu")
- , m_p_ram(*this, "ram")
- , m_rts(true)
- { }
-
- void qtsbc(machine_config &config);
- void io_map(address_map &map);
- void mem_map(address_map &map);
-private:
- DECLARE_READ8_MEMBER(memory_r);
- DECLARE_WRITE8_MEMBER(memory_w);
- DECLARE_READ8_MEMBER(io_r);
- DECLARE_WRITE8_MEMBER(io_w);
- DECLARE_WRITE_LINE_MEMBER(rts_loopback_w);
-
- virtual void machine_start() override;
- virtual void machine_reset() override;
- required_device<cpu_device> m_maincpu;
- required_device<pit8253_device> m_pit;
- required_device<i8251_device> m_usart;
- required_device<rs232_port_device> m_rs232;
- required_ioport_array<3> m_dsw;
- required_ioport m_jumpers;
- required_ioport m_cpu_speed;
- required_region_ptr<u8> m_eprom;
- required_shared_ptr<u8> m_p_ram;
- bool m_power_on;
- bool m_rts;
-};
-
-
-READ8_MEMBER(qtsbc_state::memory_r)
-{
- ioport_value jumpers = m_jumpers->read();
- ioport_value dsw3 = m_dsw[2]->read();
-
- bool eprom_addressed = (offset & (BIT(jumpers, 2) ? 0xf800 : 0xfc00)) >> 10 == dsw3;
- if (eprom_addressed && !machine().side_effects_disabled())
- m_power_on = false;
-
- if ((m_power_on && !BIT(jumpers, 1)) || (eprom_addressed && !BIT(jumpers, 0)))
- {
- offset &= BIT(jumpers, 2) ? 0x07ff : 0x03ff;
- return m_eprom[offset];
- }
-#ifdef NOT_IMPLEMENTED_CURRENTLY
- else if ((offset & 0xfc00) >> 10 == m_dsw[1]->read())
- {
- offset &= 0x03ff;
- return m_ram[offset];
- }
-#endif
- else
- {
- if (offset == 0xe377)
- return 0x80;
-
- // TODO: S-100 bus
- return m_p_ram[offset];
- }
-}
-
-WRITE8_MEMBER(qtsbc_state::memory_w)
-{
-#ifdef NOT_IMPLEMENTED_CURRENTLY
- if ((offset & 0xfc00) >> 10 == m_dsw[1]->read())
- {
- offset &= 0x03ff;
- m_ram[offset] = data;
- }
- else
-#endif
- {
- // TODO: S-100 bus
- m_p_ram[offset] = data;
- }
-}
-
-READ8_MEMBER(qtsbc_state::io_r)
-{
- if ((offset & 0xf8) >> 3 == (m_dsw[0]->read() & 0x1f))
- {
- switch (offset & 7)
- {
- case 0:
- case 1:
- case 2:
- case 3:
- default:
- return m_pit->read(offset & 3);
-
- case 4:
- case 5:
- // TODO: 8-bit parallel input port
- return 0xff;
-
- case 6:
- case 7:
- return m_usart->read(offset & 1);
- }
- }
- else
- {
- // TODO: S-100 bus (no address mirroring)
- logerror("Input from %04X\n", offset);
-
- // Ports 40 and 43 are for some sort of off-board RAM
- // Bit 0 of 43 is some sort of busy signal; bits 1-3 select some memory size factor
- if ((offset & 0xff) == 0x43)
- return 0x00;
-
- // Ports 08, 10 and 80 also used for read access
-
- return 0xff;
- }
-}
-
-WRITE8_MEMBER(qtsbc_state::io_w)
-{
- if ((offset & 0x00f8) >> 3 == (m_dsw[0]->read() & 0x1f))
- {
- switch (offset & 7)
- {
- case 0:
- case 1:
- case 2:
- case 3:
- default:
- m_pit->write(offset & 3, data);
- break;
-
- case 4:
- case 5:
- // TODO: 8-bit parallel output port
- break;
-
- case 6:
- case 7:
- m_usart->write(offset & 1, data);
- break;
- }
- }
- else
- {
- // TODO: S-100 bus (no address mirroring)
-
- logerror("Output %02X to %04X\n", data, offset);
- }
-}
-
-WRITE_LINE_MEMBER(qtsbc_state::rts_loopback_w)
-{
- // Filtered through this routine to avoid infinite loops
- if (state != bool(m_rts))
- {
- m_rts = state;
- m_rs232->write_rts(m_rts);
- }
-}
-
-void qtsbc_state::mem_map(address_map &map)
-{
- map.unmap_value_high();
- map(0x0000, 0xffff).ram().share("ram");
- map(0x0000, 0xffff).rw(FUNC(qtsbc_state::memory_r), FUNC(qtsbc_state::memory_w));
-}
-
-void qtsbc_state::io_map(address_map &map)
-{
- map.unmap_value_high();
- map(0x0000, 0xffff).rw(FUNC(qtsbc_state::io_r), FUNC(qtsbc_state::io_w));
-}
-
-/* Input ports */
-static INPUT_PORTS_START( qtsbc )
- PORT_START("DSW1")
- PORT_DIPNAME(0x1f, 0x00, "On-Board I/O Ports") PORT_DIPLOCATION("SW1:1,2,3,4,5")
- PORT_DIPSETTING(0x00, "00-07")
- PORT_DIPSETTING(0x01, "08-0F")
- PORT_DIPSETTING(0x02, "10-17")
- PORT_DIPSETTING(0x03, "18-1F")
- PORT_DIPSETTING(0x04, "20-27")
- PORT_DIPSETTING(0x05, "28-2F")
- PORT_DIPSETTING(0x06, "30-37")
- PORT_DIPSETTING(0x07, "38-3F")
- PORT_DIPSETTING(0x08, "40-47")
- PORT_DIPSETTING(0x09, "48-4F")
- PORT_DIPSETTING(0x0a, "50-57")
- PORT_DIPSETTING(0x0b, "58-5F")
- PORT_DIPSETTING(0x0c, "60-67")
- PORT_DIPSETTING(0x0d, "68-6F")
- PORT_DIPSETTING(0x0e, "70-77")
- PORT_DIPSETTING(0x0f, "78-7F")
- PORT_DIPSETTING(0x10, "80-87")
- PORT_DIPSETTING(0x11, "88-8F")
- PORT_DIPSETTING(0x12, "90-87")
- PORT_DIPSETTING(0x13, "98-9F")
- PORT_DIPSETTING(0x14, "A0-A7")
- PORT_DIPSETTING(0x15, "A8-AF")
- PORT_DIPSETTING(0x16, "B0-B7")
- PORT_DIPSETTING(0x17, "B8-BF")
- PORT_DIPSETTING(0x18, "C0-C7")
- PORT_DIPSETTING(0x19, "C8-CF")
- PORT_DIPSETTING(0x1a, "D0-D7")
- PORT_DIPSETTING(0x1b, "D8-DF")
- PORT_DIPSETTING(0x1c, "E0-E7")
- PORT_DIPSETTING(0x1d, "E8-EF")
- PORT_DIPSETTING(0x1e, "F0-F7")
- PORT_DIPSETTING(0x1f, "F8-FF")
- PORT_DIPUNUSED(0x20, 0x20) PORT_DIPLOCATION("SW1:6")
-
- PORT_START("DSW2")
- PORT_DIPNAME(0x3f, 0x37, "On-Board RAM Address") PORT_DIPLOCATION("SW2:6,5,4,3,2,1")
- PORT_DIPSETTING(0x00, "0000-03FF")
- PORT_DIPSETTING(0x01, "0400-07FF")
- PORT_DIPSETTING(0x02, "0800-0BFF")
- PORT_DIPSETTING(0x03, "0C00-0FFF")
- PORT_DIPSETTING(0x04, "1000-13FF")
- PORT_DIPSETTING(0x05, "1400-17FF")
- PORT_DIPSETTING(0x06, "1800-1BFF")
- PORT_DIPSETTING(0x07, "1C00-1FFF")
- PORT_DIPSETTING(0x08, "2000-23FF")
- PORT_DIPSETTING(0x09, "2400-27FF")
- PORT_DIPSETTING(0x0a, "2800-2BFF")
- PORT_DIPSETTING(0x0b, "2C00-2FFF")
- PORT_DIPSETTING(0x0c, "3000-33FF")
- PORT_DIPSETTING(0x0d, "3400-37FF")
- PORT_DIPSETTING(0x0e, "3800-3BFF")
- PORT_DIPSETTING(0x0f, "3C00-3FFF")
- PORT_DIPSETTING(0x10, "4000-43FF")
- PORT_DIPSETTING(0x11, "4400-47FF")
- PORT_DIPSETTING(0x12, "4800-4BFF")
- PORT_DIPSETTING(0x13, "4C00-4FFF")
- PORT_DIPSETTING(0x14, "5000-53FF")
- PORT_DIPSETTING(0x15, "5400-57FF")
- PORT_DIPSETTING(0x16, "5800-5BFF")
- PORT_DIPSETTING(0x17, "5C00-5FFF")
- PORT_DIPSETTING(0x18, "6000-63FF")
- PORT_DIPSETTING(0x19, "6400-67FF")
- PORT_DIPSETTING(0x1a, "6800-6BFF")
- PORT_DIPSETTING(0x1b, "6C00-6FFF")
- PORT_DIPSETTING(0x1c, "7000-73FF")
- PORT_DIPSETTING(0x1d, "7400-77FF")
- PORT_DIPSETTING(0x1e, "7800-7BFF")
- PORT_DIPSETTING(0x1f, "7C00-7FFF")
- PORT_DIPSETTING(0x20, "8000-83FF")
- PORT_DIPSETTING(0x21, "8400-87FF")
- PORT_DIPSETTING(0x22, "8800-8BFF")
- PORT_DIPSETTING(0x23, "8C00-8FFF")
- PORT_DIPSETTING(0x24, "9000-93FF")
- PORT_DIPSETTING(0x25, "9400-97FF")
- PORT_DIPSETTING(0x26, "9800-9BFF")
- PORT_DIPSETTING(0x27, "9C00-9FFF")
- PORT_DIPSETTING(0x28, "A000-A3FF")
- PORT_DIPSETTING(0x29, "A400-A7FF")
- PORT_DIPSETTING(0x2a, "A800-ABFF")
- PORT_DIPSETTING(0x2b, "AC00-AFFF")
- PORT_DIPSETTING(0x2c, "B000-B3FF")
- PORT_DIPSETTING(0x2d, "B400-B7FF")
- PORT_DIPSETTING(0x2e, "B800-BBFF")
- PORT_DIPSETTING(0x2f, "BC00-BFFF")
- PORT_DIPSETTING(0x30, "C000-C3FF")
- PORT_DIPSETTING(0x31, "C400-C7FF")
- PORT_DIPSETTING(0x32, "C800-CBFF")
- PORT_DIPSETTING(0x33, "CC00-CFFF")
- PORT_DIPSETTING(0x34, "D000-D3FF")
- PORT_DIPSETTING(0x35, "D400-D7FF")
- PORT_DIPSETTING(0x36, "D800-DBFF")
- PORT_DIPSETTING(0x37, "DC00-DFFF")
- PORT_DIPSETTING(0x38, "E000-E3FF")
- PORT_DIPSETTING(0x39, "E400-E7FF")
- PORT_DIPSETTING(0x3a, "E800-EBFF")
- PORT_DIPSETTING(0x3b, "EC00-EFFF")
- PORT_DIPSETTING(0x3c, "F000-F3FF")
- PORT_DIPSETTING(0x3d, "F400-F7FF")
- PORT_DIPSETTING(0x3e, "F800-FBFF")
- PORT_DIPSETTING(0x3f, "FC00-FFFF")
-
- PORT_START("DSW3")
- PORT_DIPNAME(0x3f, 0x14, "On-Board EPROM Address") PORT_DIPLOCATION("SW3:6,5,4,3,2,1")
- PORT_DIPSETTING(0x00, "0000-03FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x01, "0400-07FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x02, "0800-0BFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x03, "0C00-0FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x04, "1000-13FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x05, "1400-17FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x06, "1800-1BFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x07, "1C00-1FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x08, "2000-23FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x09, "2400-27FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x0a, "2800-2BFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x0b, "2C00-2FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x0c, "3000-33FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x0d, "3400-37FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x0e, "3800-3BFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x0f, "3C00-3FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x10, "4000-43FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x11, "4400-47FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x12, "4800-4BFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x13, "4C00-4FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x14, "5000-53FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x15, "5400-57FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x16, "5800-5BFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x17, "5C00-5FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x18, "6000-63FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x19, "6400-67FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x1a, "6800-6BFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x1b, "6C00-6FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x1c, "7000-73FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x1d, "7400-77FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x1e, "7800-7BFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x1f, "7C00-7FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x20, "8000-83FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x21, "8400-87FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x22, "8800-8BFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x23, "8C00-8FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x24, "9000-93FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x25, "9400-97FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x26, "9800-9BFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x27, "9C00-9FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x28, "A000-A3FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x29, "A400-A7FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x2a, "A800-ABFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x2b, "AC00-AFFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x2c, "B000-B3FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x2d, "B400-B7FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x2e, "B800-BBFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x2f, "BC00-BFFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x30, "C000-C3FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x31, "C400-C7FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x32, "C800-CBFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x33, "CC00-CFFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x34, "D000-D3FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x35, "D400-D7FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x36, "D800-DBFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x37, "DC00-DFFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x38, "E000-E3FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x39, "E400-E7FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x3a, "E800-EBFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x3b, "EC00-EFFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x3c, "F000-F3FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x3d, "F400-F7FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x3e, "F800-FBFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x3f, "FC00-FFFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x00)
- PORT_DIPSETTING(0x00, "0000-07FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x02, "0800-0FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x04, "1000-17FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x06, "1800-1FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x08, "2000-27FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x0a, "2800-2FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x0c, "3000-37FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x0e, "3800-3FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x10, "4000-47FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x12, "4800-4FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x14, "5000-57FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x16, "5800-5FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x18, "6000-67FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x1a, "6800-6FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x1c, "7000-77FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x1e, "7800-7FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x20, "8000-87FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x22, "8800-8FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x24, "9000-97FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x26, "9800-9FFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x28, "A000-A7FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x2a, "A800-AFFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x2c, "B000-B7FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x2e, "B800-BFFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x30, "C000-C7FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x32, "C800-CFFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x34, "D000-D7FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x36, "D800-DFFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x38, "E000-E7FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x3a, "E800-EFFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x3c, "F000-F7FF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
- PORT_DIPSETTING(0x3e, "F800-FFFF") PORT_CONDITION("JUMPERS", 0x04, EQUALS, 0x04)
-
- PORT_START("JUMPERS")
- PORT_DIPNAME(0x02, 0x00, "Power-On Jump") PORT_DIPLOCATION("T to U:1")
- PORT_DIPSETTING(0x02, DEF_STR(Off)) // T to U open
- PORT_DIPSETTING(0x00, DEF_STR(On)) // T to U shorted
- PORT_DIPNAME(0x01, 0x01, "EPROM Phantom Mode") PORT_DIPLOCATION("Q to R:1") PORT_CONDITION("JUMPERS", 0x02, EQUALS, 0x00)
- PORT_DIPSETTING(0x00, DEF_STR(Off)) // Q to R shorted
- PORT_DIPSETTING(0x01, DEF_STR(On)) // Q to R open
- PORT_DIPNAME(0x01, 0x00, "On-Board EPROM") PORT_DIPLOCATION("Q to R:1") PORT_CONDITION("JUMPERS", 0x02, EQUALS, 0x02)
- PORT_DIPSETTING(0x01, "Disabled") // Q to R open
- PORT_DIPSETTING(0x00, "Enabled") // Q to R shorted
- PORT_DIPNAME(0x04, 0x04, "On-Board EPROM Size") PORT_DIPLOCATION("P to O:1")
- PORT_DIPSETTING(0x00, "1K x 8 (2708)") // P to O shorted
- PORT_DIPSETTING(0x04, "2K x 8 (2716)") // P to O open
-
- PORT_START("SPEED")
- PORT_CONFNAME(0x01, 0x01, "CPU Speed")
- PORT_CONFSETTING(0x00, "2 MHz")
- PORT_CONFSETTING(0x01, "4 MHz")
-INPUT_PORTS_END
-
-
-void qtsbc_state::machine_start()
-{
- m_usart->write_cts(0);
-
- save_item(NAME(m_power_on));
- save_item(NAME(m_rts));
-}
-
-void qtsbc_state::machine_reset()
-{
- m_power_on = true;
- m_maincpu->set_unscaled_clock(BIT(m_cpu_speed->read(), 0) ? 4_MHz_XTAL : 4_MHz_XTAL / 2);
-}
-
-static DEVICE_INPUT_DEFAULTS_START( terminal )
- DEVICE_INPUT_DEFAULTS( "RS232_RXBAUD", 0xff, RS232_BAUD_9600 )
- DEVICE_INPUT_DEFAULTS( "RS232_TXBAUD", 0xff, RS232_BAUD_9600 )
- DEVICE_INPUT_DEFAULTS( "RS232_STARTBITS", 0xff, RS232_STARTBITS_1 )
- DEVICE_INPUT_DEFAULTS( "RS232_DATABITS", 0xff, RS232_DATABITS_7 )
- DEVICE_INPUT_DEFAULTS( "RS232_PARITY", 0xff, RS232_PARITY_EVEN )
- DEVICE_INPUT_DEFAULTS( "RS232_STOPBITS", 0xff, RS232_STOPBITS_1 )
-DEVICE_INPUT_DEFAULTS_END
-
-void qtsbc_state::qtsbc(machine_config &config)
-{
- /* basic machine hardware */
- Z80(config, m_maincpu, 4_MHz_XTAL); // Mostek MK3880
- m_maincpu->set_addrmap(AS_PROGRAM, &qtsbc_state::mem_map);
- m_maincpu->set_addrmap(AS_IO, &qtsbc_state::io_map);
-
- /* video hardware */
- PIT8253(config, m_pit, 0); // U9
- m_pit->set_clk<0>(4_MHz_XTAL / 2); /* Timer 0: baud rate gen for 8251 */
- m_pit->out_handler<0>().set(m_usart, FUNC(i8251_device::write_txc));
- m_pit->out_handler<0>().append(m_usart, FUNC(i8251_device::write_rxc));
- m_pit->set_clk<1>(4_MHz_XTAL / 2);
- m_pit->out_handler<1>().set(m_pit, FUNC(pit8253_device::write_clk2));
-
- I8251(config, m_usart, 0); // U8
- m_usart->txd_handler().set(m_rs232, FUNC(rs232_port_device::write_txd));
-
- RS232_PORT(config, m_rs232, default_rs232_devices, "terminal");
- m_rs232->rxd_handler().set(m_usart, FUNC(i8251_device::write_rxd));
- m_rs232->dsr_handler().set(m_usart, FUNC(i8251_device::write_dsr)); // actually from pin 11, "Reverse Channel Transmit"
- m_rs232->cts_handler().set(FUNC(qtsbc_state::rts_loopback_w));
- m_rs232->dcd_handler().set(m_rs232, FUNC(rs232_port_device::write_dtr));
- m_rs232->set_option_device_input_defaults("terminal", DEVICE_INPUT_DEFAULTS_NAME(terminal));
-}
-
-/* ROM definition */
-ROM_START( qtsbc )
- ROM_REGION( 0x0800, "maincpu", ROMREGION_ERASEFF )
- ROM_LOAD( "qtsbc.u23", 0x0000, 0x0800, CRC(823fd942) SHA1(64c4f74dd069ae4d43d301f5e279185f32a1efa0))
-ROM_END
-
-/* Driver */
-
-// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
-COMP( 19??, qtsbc, 0, 0, qtsbc, qtsbc, qtsbc_state, empty_init, "QT Computer Systems Inc.", "SBC + 2/4", MACHINE_NOT_WORKING | MACHINE_NO_SOUND )