Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-24 01:11:11 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

v102: Add serial ports and prepare for serial keyboard (nw)

Browse Source
This commit is contained in:
AJR 2019-01-05 15:16:51 -05:00
parent abca99ae01
commit f0931b1994
1 changed files with 64 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

70
src/mame/drivers/v102.cpp
View File

@ -1,5 +1,5 @@
// license:BSD-3-Clause
// copyright-holders:
// copyright-holders:AJR
/***********************************************************************************************************************************
Skeleton driver for Visual 102 display terminal.
@ -7,6 +7,7 @@ Skeleton driver for Visual 102 display terminal.
************************************************************************************************************************************/
#include "emu.h"
#include "bus/rs232/rs232.h"
#include "cpu/z80/z80.h"
#include "cpu/mcs48/mcs48.h"
#include "machine/eeprompar.h"
@ -26,20 +27,30 @@ public:
v102_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_p_chargen(*this, "chargen")
, m_mpsc(*this, "mpsc")
, m_chargen(*this, "chargen")
{ }
void v102(machine_config &config);
protected:
virtual void machine_start() override;
private:
u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
DECLARE_WRITE_LINE_MEMBER(hs_w);
void io_map(address_map &map);
void kbd_map(address_map &map);
void mem_map(address_map &map);
required_device<cpu_device> m_maincpu;
required_region_ptr<u8> m_p_chargen;
required_device<upd7201_new_device> m_mpsc;
required_region_ptr<u8> m_chargen;
bool m_hs_state;
bool m_kb_clock;
};
@ -48,6 +59,18 @@ u32 v102_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const
return 0;
}
WRITE_LINE_MEMBER(v102_state::hs_w)
{
if (state && !m_hs_state)
{
m_kb_clock = !m_kb_clock;
m_mpsc->txca_w(m_kb_clock);
m_mpsc->rxca_w(m_kb_clock);
}
m_hs_state = bool(state);
}
void v102_state::mem_map(address_map &map)
{
@ -73,6 +96,18 @@ void v102_state::kbd_map(address_map &map)
map(0x000, 0x7ff).rom().region("keyboard", 0);
}
void v102_state::machine_start()
{
m_hs_state = false;
m_kb_clock = false;
m_mpsc->ctsa_w(0);
m_mpsc->ctsb_w(0);
save_item(NAME(m_hs_state));
save_item(NAME(m_kb_clock));
}
static INPUT_PORTS_START(v102)
INPUT_PORTS_END
@ -90,23 +125,46 @@ void v102_state::v102(machine_config &config)
crt9007_device &vpac(CRT9007(config, "vpac", 18.575_MHz_XTAL / 10));
vpac.set_character_width(10); // 6 in 132-column mode
vpac.int_callback().set("mainirq", FUNC(input_merger_device::in_w<2>));
vpac.hs_callback().set(FUNC(v102_state::hs_w));
EEPROM_2804(config, "eeprom");
upd7201_new_device &mpsc(UPD7201_NEW(config, "mpsc", 18.575_MHz_XTAL / 5)); // divider not verified
mpsc.out_int_callback().set("mainirq", FUNC(input_merger_device::in_w<0>));
UPD7201_NEW(config, m_mpsc, 18.575_MHz_XTAL / 5); // divider not verified
m_mpsc->out_int_callback().set("mainirq", FUNC(input_merger_device::in_w<0>));
m_mpsc->out_txdb_callback().set("aux", FUNC(rs232_port_device::write_txd));
m_mpsc->out_dtrb_callback().set("aux", FUNC(rs232_port_device::write_dtr));
m_mpsc->out_rtsb_callback().set("aux", FUNC(rs232_port_device::write_rts));
i8251_device &usart(I8251(config, "usart", 18.575_MHz_XTAL / 5)); // divider not verified
usart.rxrdy_handler().set("mainirq", FUNC(input_merger_device::in_w<1>));
usart.txd_handler().set("modem", FUNC(rs232_port_device::write_txd));
usart.dtr_handler().set("modem", FUNC(rs232_port_device::write_dtr));
usart.rts_handler().set("modem", FUNC(rs232_port_device::write_rts));
INPUT_MERGER_ANY_HIGH(config, "mainirq").output_handler().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
PIT8253(config, "pit", 0);
pit8253_device &pit(PIT8253(config, "pit", 0));
pit.set_clk<0>(18.575_MHz_XTAL / 6);
pit.set_clk<1>(18.575_MHz_XTAL / 6);
pit.set_clk<2>(18.575_MHz_XTAL / 6);
pit.out_handler<0>().set("usart", FUNC(i8251_device::write_txc));
pit.out_handler<1>().set("usart", FUNC(i8251_device::write_rxc));
pit.out_handler<2>().set(m_mpsc, FUNC(upd7201_new_device::txcb_w));
pit.out_handler<2>().append(m_mpsc, FUNC(upd7201_new_device::rxcb_w));
I8255(config, "ppi");
mcs48_cpu_device &kbdcpu(I8039(config, "kbdcpu", 4.608_MHz_XTAL)); // oscillator marked "4608 - 300 107 - KSS4D"
kbdcpu.set_addrmap(AS_PROGRAM, &v102_state::kbd_map);
rs232_port_device &modem(RS232_PORT(config, "modem", default_rs232_devices, nullptr));
modem.rxd_handler().set("usart", FUNC(i8251_device::write_rxd));
modem.cts_handler().set("usart", FUNC(i8251_device::write_cts));
modem.dcd_handler().set("usart", FUNC(i8251_device::write_dsr));
rs232_port_device &aux(RS232_PORT(config, "aux", default_rs232_devices, nullptr));
aux.rxd_handler().set(m_mpsc, FUNC(upd7201_new_device::rxb_w));
aux.dcd_handler().set(m_mpsc, FUNC(upd7201_new_device::dcdb_w)); // DTR (printer busy)
}