// license:BSD-3-Clause // copyright-holders:Robbbert /*************************************************************************** Digital Microsystems ZSBC-3 11/01/2010 Skeleton driver. 28/11/2010 Connected to a terminal 11/01/2011 Converted to Modern. **************************************************************************** Monitor commands: [] indicates optional Bx = Boot from device x (0 to 7) Dx [y] = Dump memory (hex and ascii) in range x [to y] Fx y z = Fill memory x to y with z Gx = Execute program at address x Ix = Display IN of port x Ox y = Output y to port x Sx = Enter memory editing mode, press enter for next address Mx y = unknown (affects memory) Tx = unknown (does strange things) enter = dump memory from 9000 to 907F (why?) **************************************************************************** TODO: Everything really... Devices of all kinds; Use the other rom for something.. ****************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" #include "machine/z80ctc.h" #include "machine/z80sio.h" #include "machine/z80pio.h" #include "bus/rs232/rs232.h" class zsbc3_state : public driver_device { public: zsbc3_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") { } void zsbc3(machine_config &config); private: void zsbc3_io(address_map &map); void zsbc3_mem(address_map &map); required_device m_maincpu; }; void zsbc3_state::zsbc3_mem(address_map &map) { map.unmap_value_high(); map(0x0000, 0x07ff).rom(); map(0x0800, 0xffff).ram(); } void zsbc3_state::zsbc3_io(address_map &map) { map.unmap_value_high(); map.global_mask(0xff); map(0x08, 0x0b); //.rw("pio", FUNC(z80pio_device::read), FUNC(z80pio_device::write)); // the control bytes appear to be for a PIO map(0x28, 0x2b).rw("sio", FUNC(z80sio_device::cd_ba_r), FUNC(z80sio_device::cd_ba_w)); map(0x30, 0x33).rw("ctc", FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); map(0x38, 0x38); // unknown device, init byte = C3 } /* Input ports */ static INPUT_PORTS_START( zsbc3 ) INPUT_PORTS_END void zsbc3_state::zsbc3(machine_config &config) { /* basic machine hardware */ Z80(config, m_maincpu, 16_MHz_XTAL / 4); m_maincpu->set_addrmap(AS_PROGRAM, &zsbc3_state::zsbc3_mem); m_maincpu->set_addrmap(AS_IO, &zsbc3_state::zsbc3_io); z80ctc_device &ctc(Z80CTC(config, "ctc", 16_MHz_XTAL / 4)); ctc.set_clk<0>(16_MHz_XTAL / 8); ctc.set_clk<1>(16_MHz_XTAL / 8); ctc.set_clk<2>(16_MHz_XTAL / 8); ctc.set_clk<3>(16_MHz_XTAL / 8); ctc.zc_callback<0>().set("sio", FUNC(z80sio_device::txca_w)); ctc.zc_callback<0>().append("sio", FUNC(z80sio_device::rxca_w)); z80sio_device &sio(Z80SIO(config, "sio", 16_MHz_XTAL / 4)); //sio.out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); // no evidence of a daisy chain because IM2 is not set sio.out_txda_callback().set("rs232", FUNC(rs232_port_device::write_txd)); sio.out_dtra_callback().set("rs232", FUNC(rs232_port_device::write_dtr)); sio.out_rtsa_callback().set("rs232", FUNC(rs232_port_device::write_rts)); rs232_port_device &rs232(RS232_PORT(config, "rs232", default_rs232_devices, "terminal")); rs232.rxd_handler().set("sio", FUNC(z80sio_device::rxa_w)); rs232.cts_handler().set("sio", FUNC(z80sio_device::ctsa_w)); /*z80pio_device &pio(*/Z80PIO(config, "pio", 16_MHz_XTAL / 4)/*)*/; //pio.out_int_callback.set_inputline(m_maincpu, INPUT_LINE_IRQ0); } /* ROM definition */ ROM_START( zsbc3 ) ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) ROM_LOAD( "54-3002_zsbc_monitor_1.09.bin", 0x0000, 0x0800, CRC(628588e9) SHA1(8f0d489147ec8382ca007236e0a95a83b6ebcd86)) ROM_REGION( 0x10000, "hdc", ROMREGION_ERASEFF ) ROM_LOAD( "54-8622_hdc13.bin", 0x0000, 0x0400, CRC(02c7cd6d) SHA1(494281ba081a0f7fbadfc30a7d2ea18c59e55101)) ROM_END /* Driver */ /* YEAR NAME PARENT COMPAT MACHINE INPUT STATE INIT COMPANY FULLNAME FLAGS */ COMP( 1980, zsbc3, 0, 0, zsbc3, zsbc3, zsbc3_state, empty_init, "Digital Microsystems", "ZSBC-3", MACHINE_NO_SOUND_HW)