/
a7150.cpp
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/
a7150.cpp
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// license:BSD-3-Clause
// copyright-holders:Miodrag Milanovic, Sergey Svishchev
/***************************************************************************
Robotron A7150
2009-10-04 Skeleton driver.
http://www.robotrontechnik.de/index.htm?/html/computer/a7150.htm
http://www.tiffe.de/Robotron/MMS16/
- Confidence test is documented in A7150_Rechner...pdf, pp. 112-119
- Internal test of KGS -- in KGS-K7070.pdf, pp. 19-23
After about a minute, the self-test will appear.
To do:
- native keyboard -- K7637 and/or K7672
- interrupts
- ABS K7071 (text-only video)
- ABG K7075 (CGA compatible video)
- KES K5170 media controller (derived from iSBC 215A but not 100% compatible)
- boot BOS (iRMX clone)
- boot DCP (DOS clone)
- boot MUTOS (V7 UNIX) to multiuser
- boot SCP (CP/M clone)
- A7100 model (KES at 0x100 etc.)
****************************************************************************/
#include "emu.h"
#include "isbc_215g.h"
#include "bus/multibus/multibus.h"
#include "bus/multibus/robotron_k7070.h"
#include "bus/multibus/robotron_k7071.h"
#include "bus/rs232/rs232.h"
#include "cpu/i86/i86.h"
#include "machine/i8087.h"
#include "machine/i8251.h"
#include "machine/i8255.h"
#include "machine/keyboard.h"
#include "machine/pic8259.h"
#include "machine/pit8253.h"
namespace {
class a7150_state : public driver_device
{
public:
a7150_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_bus(*this, "slot")
, m_maincpu(*this, "maincpu")
, m_uart8251(*this, "uart8251")
, m_pit8253(*this, "pit8253")
, m_pic8259(*this, "pic8259")
, m_rs232(*this, "rs232")
{ }
void a7150(machine_config &config);
protected:
virtual void machine_reset() override;
virtual void machine_start() override;
private:
void ppi_c_w(uint8_t data);
bool m_ifss_loopback = 0;
required_device<multibus_device> m_bus;
required_device<i8086_cpu_device> m_maincpu;
required_device<i8251_device> m_uart8251;
required_device<pit8253_device> m_pit8253;
required_device<pic8259_device> m_pic8259;
required_device<rs232_port_device> m_rs232;
void io_map(address_map &map);
void mem_map(address_map &map);
u8 bus_pio_r(offs_t offset) { return m_bus->space(AS_IO).read_byte(offset); }
void bus_pio_w(offs_t offset, u8 data) { m_bus->space(AS_IO).write_byte(offset, data); }
};
void a7150_state::ppi_c_w(uint8_t data)
{
// b0 -- INTR(B)
// b1 -- /OBF(B)
// m_centronics->write_ack(BIT(data, 2));
// m_centronics->write_strobe(BIT(data, 3));
// b7 -- /NMIDIS
}
void a7150_state::mem_map(address_map &map)
{
map.unmap_value_high();
map(0x00000, 0xf7fff).ram();
map(0xf8000, 0xfffff).rom().region("maincpu", 0);
}
void a7150_state::io_map(address_map &map)
{
map.unmap_value_high();
// map PIO to Multibus by default
map(0x0000, 0xffff).rw(FUNC(a7150_state::bus_pio_r), FUNC(a7150_state::bus_pio_w));
// map(0x0000, 0x0003).unmaprw(); // memory parity 1-2
// map(0x0040, 0x0043).unmaprw(); // memory parity 3-4
map(0x004a, 0x004a).w("isbc_215g", FUNC(isbc_215g_device::write)); // KES board
map(0x00c0, 0x00c3).rw(m_pic8259, FUNC(pic8259_device::read), FUNC(pic8259_device::write)).umask16(0x00ff);
map(0x00c8, 0x00cf).rw("ppi8255", FUNC(i8255_device::read), FUNC(i8255_device::write)).umask16(0x00ff);
map(0x00d0, 0x00d7).rw(m_pit8253, FUNC(pit8253_device::read), FUNC(pit8253_device::write)).umask16(0x00ff);
map(0x00d8, 0x00db).rw(m_uart8251, FUNC(i8251_device::read), FUNC(i8251_device::write)).umask16(0x00ff);
// map(0x0300, 0x031f).unmaprw(); // ASP board #1
// map(0x0320, 0x033f).unmaprw(); // ASP board #2
}
static DEVICE_INPUT_DEFAULTS_START( kbd_rs232_defaults )
DEVICE_INPUT_DEFAULTS( "RS232_TXBAUD", 0xff, RS232_BAUD_28800 )
DEVICE_INPUT_DEFAULTS( "RS232_RXBAUD", 0xff, RS232_BAUD_28800 )
DEVICE_INPUT_DEFAULTS( "RS232_DATABITS", 0xff, RS232_DATABITS_8 )
DEVICE_INPUT_DEFAULTS( "RS232_PARITY", 0xff, RS232_PARITY_NONE )
DEVICE_INPUT_DEFAULTS( "RS232_STOPBITS", 0xff, RS232_STOPBITS_2 )
DEVICE_INPUT_DEFAULTS( "FLOW_CONTROL", 0x01, 0x01 )
DEVICE_INPUT_DEFAULTS_END
void a7150_state::machine_reset()
{
m_ifss_loopback = false;
}
void a7150_state::machine_start()
{
save_item(NAME(m_ifss_loopback));
}
static void a7150_cards(device_slot_interface &device)
{
device.option_add("kgs", ROBOTRON_K7070);
device.option_add("abs", ROBOTRON_K7071);
}
/*
* K2771.30 ZRE - processor board
* K3571 OPS - 256KB RAM board (x4)
* K7070 KGS - graphics terminal, running firmware from A7100
* K7072 ABG - dumb grayscale framebuffer
* K5170 KES - media controller
*/
void a7150_state::a7150(machine_config &config)
{
MULTIBUS(config, m_bus, 10_MHz_XTAL); // FIXME: clock driven by bus master
m_bus->int_callback<1>().set(m_pic8259, FUNC(pic8259_device::ir1_w));
m_bus->int_callback<6>().set(m_pic8259, FUNC(pic8259_device::ir6_w));
m_bus->int_callback<7>().set(m_pic8259, FUNC(pic8259_device::ir7_w));
MULTIBUS_SLOT(config, "slot:1", m_bus, a7150_cards, "kgs", false);
// ZRE board
I8086(config, m_maincpu, XTAL(9'832'000) / 2);
m_maincpu->set_addrmap(AS_PROGRAM, &a7150_state::mem_map);
m_maincpu->set_addrmap(AS_IO, &a7150_state::io_map);
m_maincpu->set_irq_acknowledge_callback("pic8259", FUNC(pic8259_device::inta_cb));
m_maincpu->esc_opcode_handler().set("i8087", FUNC(i8087_device::insn_w));
m_maincpu->esc_data_handler().set("i8087", FUNC(i8087_device::addr_w));
i8087_device &i8087(I8087(config, "i8087", XTAL(9'832'000) / 2));
i8087.set_space_86(m_maincpu, AS_PROGRAM);
i8087.irq().set(m_pic8259, FUNC(pic8259_device::ir0_w));
i8087.busy().set_inputline("maincpu", INPUT_LINE_TEST);
PIC8259(config, m_pic8259, 0);
m_pic8259->out_int_callback().set_inputline(m_maincpu, 0);
// IFSP port (IRQ 4)
i8255_device &ppi(I8255(config, "ppi8255"));
// ppi.in_pa_callback().set("cent_status_in", FUNC(input_buffer_device::read));
// ppi.out_pb_callback().set("cent_data_out", output_latch_device::write));
ppi.out_pc_callback().set(FUNC(a7150_state::ppi_c_w));
PIT8253(config, m_pit8253, 0);
m_pit8253->set_clk<0>(14.7456_MHz_XTAL / 4);
m_pit8253->out_handler<0>().set(m_pic8259, FUNC(pic8259_device::ir2_w));
m_pit8253->set_clk<1>(14.7456_MHz_XTAL / 4);
m_pit8253->set_clk<2>(14.7456_MHz_XTAL / 4);
m_pit8253->out_handler<2>().set([this] (bool state) { m_uart8251->write_rxc(state); m_uart8251->write_txc(state); });
// IFSS port -- keyboard runs at 28800 8N2
I8251(config, m_uart8251, 0);
m_uart8251->txd_handler().set([this] (bool state) { if (m_ifss_loopback) m_uart8251->write_rxd(state); else m_rs232->write_txd(state); });
m_uart8251->dtr_handler().set([this] (bool state) { if (m_ifss_loopback) m_uart8251->write_dsr(state); else m_rs232->write_dtr(state); });
m_uart8251->rts_handler().set([this] (bool state) { m_ifss_loopback = !state; });
m_uart8251->rxrdy_handler().set(m_pic8259, FUNC(pic8259_device::ir6_w));
RS232_PORT(config, m_rs232, default_rs232_devices, "keyboard");
m_rs232->rxd_handler().set(m_uart8251, FUNC(i8251_device::write_rxd));
m_rs232->cts_handler().set(m_uart8251, FUNC(i8251_device::write_cts));
m_rs232->dsr_handler().set(m_uart8251, FUNC(i8251_device::write_dsr));
m_rs232->set_option_device_input_defaults("keyboard", DEVICE_INPUT_DEFAULTS_NAME(kbd_rs232_defaults));
// KES board
ISBC_215G(config, "isbc_215g", 0, 0x4a, m_maincpu).irq_callback().set(m_pic8259, FUNC(pic8259_device::ir5_w));
}
/* ROM definition */
ROM_START( a7150 )
ROM_REGION16_LE( 0x8000, "maincpu", 0 )
ROM_DEFAULT_BIOS("2.3")
// A7100
ROM_SYSTEM_BIOS(0, "1.1", "ACT 1.1")
ROMX_LOAD("q259.bin", 0x4001, 0x2000, CRC(fb5b547b) SHA1(1d17fcededa91cad321a7b237a46a308142d902b), ROM_BIOS(0) | ROM_SKIP(1))
ROMX_LOAD("q260.bin", 0x0001, 0x2000, CRC(b51f8ed6) SHA1(9aa6291bf8ab49a343741717366992649e2957b3), ROM_BIOS(0) | ROM_SKIP(1))
ROMX_LOAD("q261.bin", 0x4000, 0x2000, CRC(43c08ea3) SHA1(ea697180b415b71d834968be84431a6efe9490c2), ROM_BIOS(0) | ROM_SKIP(1))
ROMX_LOAD("q262.bin", 0x0000, 0x2000, CRC(9df1c396) SHA1(a627889e1162e5b2fe95804de52bb78e41aaf7cc), ROM_BIOS(0) | ROM_SKIP(1))
// A7150
ROM_SYSTEM_BIOS(1, "2.1", "ACT 2.1") // requires K7075 video card
ROMX_LOAD("265.bin", 0x4001, 0x2000, CRC(a5fb5f35) SHA1(9d9501441cad0ef724dec7b5ffb52b17a678a9f8), ROM_BIOS(1) | ROM_SKIP(1))
ROMX_LOAD("266.bin", 0x0001, 0x2000, CRC(f5898eb7) SHA1(af3fd82813fbea7883dea4d7e23a9b5e5b2b844a), ROM_BIOS(1) | ROM_SKIP(1))
ROMX_LOAD("267.bin", 0x4000, 0x2000, CRC(c1873a01) SHA1(77f15cc217cd854732fbe33d395e1ea9867fedd7), ROM_BIOS(1) | ROM_SKIP(1))
ROMX_LOAD("268.bin", 0x0000, 0x2000, CRC(e3f09213) SHA1(1e2d69061f8e84697440b219181e0b870fe21835), ROM_BIOS(1) | ROM_SKIP(1))
ROM_SYSTEM_BIOS(2, "2.2", "ACT 2.2")
ROMX_LOAD("269.bin", 0x4001, 0x2000, CRC(f137f94b) SHA1(7cb79f332db48cb66dae04c1ce1bdd169a6ab561), ROM_BIOS(2) | ROM_SKIP(1))
ROMX_LOAD("270.bin", 0x0001, 0x2000, CRC(1ea44a33) SHA1(f5708d1f6a9dc109979a9a91a80f2a4e4956d1eb), ROM_BIOS(2) | ROM_SKIP(1))
ROMX_LOAD("271.bin", 0x4000, 0x2000, CRC(de2222c9) SHA1(e02225c93b49f0380dfb2d996b63370141359199), ROM_BIOS(2) | ROM_SKIP(1))
ROMX_LOAD("272.bin", 0x0000, 0x2000, CRC(5001c528) SHA1(ce67c35326fbfd17f086a37ffe81b79aefaef0cb), ROM_BIOS(2) | ROM_SKIP(1))
ROM_SYSTEM_BIOS(3, "2.3", "ACT 2.3")
ROMX_LOAD("273.rom", 0x4001, 0x2000, CRC(67ca9b78) SHA1(bcb6221f6df28b24b602846b149ac12e93b5e356), ROM_BIOS(3) | ROM_SKIP(1))
ROMX_LOAD("274.rom", 0x0001, 0x2000, CRC(6fa68834) SHA1(49abe48bbb5ae151f977a9c63b27336c15e8a08d), ROM_BIOS(3) | ROM_SKIP(1))
ROMX_LOAD("275.rom", 0x4000, 0x2000, CRC(0da54426) SHA1(7492caff98b1d1a896c5964942b17beadf996b60), ROM_BIOS(3) | ROM_SKIP(1))
ROMX_LOAD("276.rom", 0x0000, 0x2000, CRC(5924192a) SHA1(eb494d9f96a0b3ea69f4b9cb2b7add66a8c16946), ROM_BIOS(3) | ROM_SKIP(1))
ROM_END
} // anonymous namespace
/* Driver */
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 1986, a7150, 0, 0, a7150, 0, a7150_state, empty_init, "VEB Robotron", "A7150", MACHINE_NOT_WORKING | MACHINE_NO_SOUND | MACHINE_SUPPORTS_SAVE )