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|
// license:BSD-3-Clause
// copyright-holders:Robbbert
/***************************************************************************
SEL Z80 Trainer (LEHRSYSTEME)
2010-08-31 Skeleton driver.
2011-06-23 Working [Robbbert]
No diagram has been found. The following is guesswork.
Test sequence: Press -, enter an address, press = to show contents, press
up/down-arrow to cycle through addresses.
Paste test: -=11H22H33H44H55H66H77H88H99HK-1000=
Now press UP to see that the data has been entered.
ToDo:
- Keys are a guess, need to be confirmed.
- Needs to be tested by a subject-matter expert.
- i8255 to be added (address is unknown)
- "Tape-Interface" to be added (has its own LED)
- "Binary" area to be added - has 8 slide switches and a LED for each
- Halt LED
- "User Display" to be added - has 6 digits and a 74C917 chip
- 3 large sockets labelled "E C B - BUS"
- Unknown I/O:
'maincpu' (00F2): unmapped i/o memory write to 000C = 00 & FF
'maincpu' (00F8): unmapped i/o memory write to 0010 = FF & FF
****************************************************************************/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "machine/i8251.h"
#include "machine/i8279.h"
#include "bus/rs232/rs232.h"
#include "machine/clock.h"
#include "video/pwm.h"
#include "selz80.lh"
class selz80_state : public driver_device
{
public:
selz80_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_p_ram(*this, "ram")
, m_io_keyboard(*this, "X%u", 0U)
, m_clock(*this, "uart_clock")
, m_display(*this, "display")
{ }
void selz80(machine_config &config);
protected:
void scanlines_w(uint8_t data);
void digit_w(uint8_t data);
uint8_t kbd_r();
void selz80_io(address_map &map);
u8 m_digit = 0U;
u8 m_seg = 0U;
void setup_baud();
void machine_start() override;
required_device<cpu_device> m_maincpu;
optional_shared_ptr<u8> m_p_ram;
required_ioport_array<4> m_io_keyboard;
required_device<clock_device> m_clock;
required_device<pwm_display_device> m_display;
private:
void selz80_mem(address_map &map);
void machine_reset() override;
};
class dagz80_state : public selz80_state
{
public:
using selz80_state::selz80_state;
void dagz80(machine_config &config);
private:
void dagz80_mem(address_map &map);
void machine_reset() override;
};
void dagz80_state::dagz80_mem(address_map &map)
{
map.unmap_value_high();
map(0x0000, 0x1fff).ram().share("ram");
map(0xe000, 0xffff).ram();
}
void selz80_state::selz80_mem(address_map &map)
{
map.unmap_value_high();
map(0x0000, 0x0fff).rom();
map(0x1000, 0x27ff).ram(); // all 3 RAM sockets filled
// map(0x3000, 0x37ff).rom(); // empty socket for ROM
map(0xa000, 0xffff).rom();
}
void selz80_state::selz80_io(address_map &map)
{
map.unmap_value_high();
map.global_mask(0xff);
map(0x00, 0x01).rw("i8279", FUNC(i8279_device::read), FUNC(i8279_device::write));
map(0x18, 0x19).rw("uart", FUNC(i8251_device::read), FUNC(i8251_device::write));
}
/* Input ports */
static INPUT_PORTS_START( selz80 )
/* 2 x 16-key pads
RS SS RN MM C(IS) D(FL) E(FL') F
EX BP TW TR 8(IX) 9(IY) A(PC) B(SP)
RL IN - + 4(AF') 5(BC') 6(DE') 7(HL')
RG EN SA SD 0(AF) 1(BC) 2(DE) 3(HL)
*/
PORT_START("X0")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('F')
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E FL'") PORT_CODE(KEYCODE_E) PORT_CHAR('E')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D FL") PORT_CODE(KEYCODE_D) PORT_CHAR('D')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C IS") PORT_CODE(KEYCODE_C) PORT_CHAR('C')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("MM") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("RN") PORT_CODE(KEYCODE_W) PORT_CHAR('W')
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SS") PORT_CODE(KEYCODE_R) PORT_CHAR('R')
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("RS") PORT_CODE(KEYCODE_T) PORT_CHAR('T')
PORT_START("X1")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B SP") PORT_CODE(KEYCODE_B) PORT_CHAR('B')
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A PC") PORT_CODE(KEYCODE_A) PORT_CHAR('A')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9 IY") PORT_CODE(KEYCODE_9) PORT_CHAR('9')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8 IX") PORT_CODE(KEYCODE_8) PORT_CHAR('8')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("TR (tape read)") PORT_CODE(KEYCODE_Y)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("TW (tape write)") PORT_CODE(KEYCODE_U)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("BP") PORT_CODE(KEYCODE_I) PORT_CHAR('I')
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("EX") PORT_CODE(KEYCODE_O) PORT_CHAR('O')
PORT_START("X2")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7 HL'") PORT_CODE(KEYCODE_7) PORT_CHAR('7')
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6 DE'") PORT_CODE(KEYCODE_6) PORT_CHAR('6')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5 BC'") PORT_CODE(KEYCODE_5) PORT_CHAR('5')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4 AF'") PORT_CODE(KEYCODE_4) PORT_CHAR('4')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("+") PORT_CODE(KEYCODE_UP) PORT_CHAR('^')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("-") PORT_CODE(KEYCODE_DOWN) PORT_CHAR('V')
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("IN") PORT_CODE(KEYCODE_S) PORT_CHAR('S')
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("RL") PORT_CODE(KEYCODE_G) PORT_CHAR('G')
PORT_START("X3")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3 HL") PORT_CODE(KEYCODE_3) PORT_CHAR('3')
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2 DE") PORT_CODE(KEYCODE_2) PORT_CHAR('2')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("1 BC") PORT_CODE(KEYCODE_1) PORT_CHAR('1')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0 AF") PORT_CODE(KEYCODE_0) PORT_CHAR('0')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SD") PORT_CODE(KEYCODE_H) PORT_CHAR('H')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SA") PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=')
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("EN") PORT_CODE(KEYCODE_K) PORT_CHAR('K')
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("RG") PORT_CODE(KEYCODE_L) PORT_CHAR('L')
PORT_START("BJ") // baud jumper
/* not connected to cpu, each pair of pins is connected directly to the output
of a 4020 counter dividing the ???? clock to feed the 8251. You use a jumper
(like the kind on the back of a IDE hard drive) to choose the speed. */
PORT_DIPNAME( 0x0F, 0x00, "Baud Rate" )
PORT_DIPSETTING( 0x00, "9600" )
PORT_DIPSETTING( 0x01, "4800" )
PORT_DIPSETTING( 0x02, "2400" )
PORT_DIPSETTING( 0x03, "1200" )
PORT_DIPSETTING( 0x04, "600" )
PORT_DIPSETTING( 0x05, "300" )
PORT_DIPSETTING( 0x06, "150" )
PORT_DIPSETTING( 0x07, "75" )
PORT_DIPSETTING( 0x08, "38" ) // 37.5
PORT_DIPSETTING( 0x09, "18" ) // 17.75
PORT_DIPSETTING( 0x0A, "9" ) // 8.875
INPUT_PORTS_END
void selz80_state::setup_baud()
{
// setup baud rate for uart
u8 baudsw = ioport("BJ")->read() & 15;
if (baudsw)
{
u32 speed = (9600*16) >> baudsw;
m_clock->set_unscaled_clock(speed);
}
}
void selz80_state::machine_start()
{
save_item(NAME(m_digit));
save_item(NAME(m_seg));
}
void selz80_state::machine_reset()
{
setup_baud();
}
void dagz80_state::machine_reset()
{
setup_baud();
uint8_t* rom = memregion("user1")->base();
uint16_t size = memregion("user1")->bytes();
memcpy(m_p_ram, rom, size);
m_maincpu->reset();
}
void selz80_state::scanlines_w(uint8_t data)
{
m_digit = data;
m_display->matrix(1 << m_digit, m_seg);
}
void selz80_state::digit_w(uint8_t data)
{
m_seg = bitswap<8>(data, 3, 2, 1, 0, 7, 6, 5, 4);
m_display->matrix(1 << m_digit, m_seg);
}
uint8_t selz80_state::kbd_r()
{
uint8_t data = 0xff;
if ((m_digit & 7) < 4)
data = m_io_keyboard[m_digit & 3]->read();
return data;
}
void selz80_state::selz80(machine_config &config)
{
/* basic machine hardware */
Z80(config, m_maincpu, 4.9152_MHz_XTAL / 2); // NEC uPD780C-1 cpu
m_maincpu->set_addrmap(AS_PROGRAM, &selz80_state::selz80_mem);
m_maincpu->set_addrmap(AS_IO, &selz80_state::selz80_io);
/* video hardware */
config.set_default_layout(layout_selz80);
PWM_DISPLAY(config, m_display).set_size(8, 8);
m_display->set_segmask(0xff, 0xff);
/* Devices */
CLOCK(config, m_clock, 153'600);
m_clock->signal_handler().set("uart", FUNC(i8251_device::write_txc));
m_clock->signal_handler().append("uart", FUNC(i8251_device::write_rxc));
i8251_device &uart(I8251(config, "uart", 0));
uart.txd_handler().set("rs232", FUNC(rs232_port_device::write_txd));
uart.dtr_handler().set("rs232", FUNC(rs232_port_device::write_dtr));
uart.rts_handler().set("rs232", FUNC(rs232_port_device::write_rts));
rs232_port_device &rs232(RS232_PORT(config, "rs232", default_rs232_devices, nullptr));
rs232.rxd_handler().set("uart", FUNC(i8251_device::write_rxd));
rs232.dsr_handler().set("uart", FUNC(i8251_device::write_dsr));
rs232.cts_handler().set("uart", FUNC(i8251_device::write_cts));
i8279_device &kbdc(I8279(config, "i8279", 4.9152_MHz_XTAL / 2)); // based on divider
kbdc.out_sl_callback().set(FUNC(selz80_state::scanlines_w)); // scan SL lines
kbdc.out_disp_callback().set(FUNC(selz80_state::digit_w)); // display A&B
kbdc.in_rl_callback().set(FUNC(selz80_state::kbd_r)); // kbd RL lines
kbdc.in_shift_callback().set_constant(1); // Shift key
kbdc.in_ctrl_callback().set_constant(1);
}
void dagz80_state::dagz80(machine_config &config)
{
selz80(config);
m_maincpu->set_addrmap(AS_PROGRAM, &dagz80_state::dagz80_mem);
}
/* ROM definition */
ROM_START( selz80 )
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_SYSTEM_BIOS(0, "v3.3", "V3.3")
ROMX_LOAD( "z80-trainer.rom", 0x0000, 0x1000, CRC(eed1755f) SHA1(72e6ebfccb0e50034660bc36db1a741932311ce1), ROM_BIOS(0)) // (c)TEL86/V3.3
ROM_SYSTEM_BIOS(1, "v3.2", "V3.2")
ROMX_LOAD( "moniz80_3.2_04.12.1985.bin", 0x0000, 0x1000, CRC(3a3cf574) SHA1(ba6cd2276ce66f3a4545baf4d396f6c06d51dc38), ROM_BIOS(1)) // (c)SEL85/V3.2
ROM_LOAD( "term80-a000.bin", 0xa000, 0x2000, CRC(0a58c0a7) SHA1(d1b4b3b2ad0d084175b1ff6966653d8b20025252))
ROM_LOAD( "term80-e000.bin", 0xe000, 0x2000, CRC(158e08e6) SHA1(f1add43bcf8744a01238fb893ee284872d434db5))
ROM_END
ROM_START( dagz80 )
ROM_REGION( 0x2000, "user1", ROMREGION_ERASEFF )
ROM_LOAD( "moni_1.5_15.08.1988.bin", 0x0000, 0x2000, CRC(318aee6e) SHA1(c698fdee401b88e673791aabcba6a9628938a075) )
ROM_END
/* Driver */
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 1985, selz80, 0, 0, selz80, selz80, selz80_state, empty_init, "SEL", "SEL Z80 Trainer", MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE )
COMP( 1988, dagz80, selz80, 0, dagz80, selz80, dagz80_state, empty_init, "DAG", "DAG Z80 Trainer", MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE )
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