Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-21 07:52:35 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

luna_68k: more probable serial clock, handle reset

Browse Source
This commit is contained in:
Patrick Mackinlay 2021-10-08 16:49:57 +07:00
parent 16fc6c6e29
commit 49a62ba99c
1 changed files with 17 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
src/mame/drivers/luna_68k.cpp
View File

@ -34,6 +34,7 @@
#include "machine/mc146818.h"
#include "machine/z80sio.h"
#include "machine/am9513.h"
#include "machine/clock.h"
// busses and connectors
#include "bus/rs232/rs232.h"
@ -56,6 +57,7 @@ public:
, m_sio(*this, "sio")
, m_stc(*this, "stc")
, m_serial(*this, "serial%u", 0U)
, m_eprom(*this, "eprom")
{
}
@ -75,13 +77,6 @@ protected:
void common(machine_config &config);
private:
// HACK: this timer drives the am9513 gate1 line
void timer(void *ptr, s32 param)
{
m_stc->gate1_w(1);
m_stc->gate1_w(0);
}
// devices
required_device<m68030_device> m_cpu;
required_device<ram_device> m_ram;
@ -90,28 +85,25 @@ private:
required_device<am9513_device> m_stc;
required_device_array<rs232_port_device, 2> m_serial;
emu_timer *m_timer;
required_region_ptr<u32> m_eprom;
};
void luna_68k_state::init()
{
m_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(luna_68k_state::timer), this));
}
void luna_68k_state::machine_start()
{
// HACK: arbitrary/unknown cycle time
m_timer->adjust(attotime::from_hz(1'000'000), 0, attotime::from_hz(1'000'000));
}
void luna_68k_state::machine_reset()
{
// mirror eprom at reset
m_cpu->space(AS_PROGRAM).install_rom(0, m_eprom.bytes() - 1, m_eprom);
}
void luna_68k_state::cpu_map(address_map &map)
{
map(0x00000000, 0x0001ffff).rom().region("eprom", 0);
map(0x40000000, 0x4001ffff).rom().region("eprom", 0);
map(0x50000000, 0x50000007).rw(m_sio, FUNC(upd7201_device::ba_cd_r), FUNC(upd7201_device::ba_cd_w)).umask32(0xff00ff00);
@ -133,6 +125,11 @@ void luna_68k_state::cpu_autovector_map(address_map &map)
map(0xffffffff, 0xffffffff).lr8(NAME([]() { return m68000_base_device::autovector(7); }));
}
static DEVICE_INPUT_DEFAULTS_START(terminal)
DEVICE_INPUT_DEFAULTS("RS232_RXBAUD", 0xff, RS232_BAUD_19200)
DEVICE_INPUT_DEFAULTS("RS232_TXBAUD", 0xff, RS232_BAUD_19200)
DEVICE_INPUT_DEFAULTS_END
void luna_68k_state::luna(machine_config &config)
{
M68030(config, m_cpu, 50_MHz_XTAL / 2);
@ -145,10 +142,11 @@ void luna_68k_state::luna(machine_config &config)
DS1287(config, m_rtc, 32'768);
UPD7201(config, m_sio, 9'830'000 / 2); // D9.83B0
UPD7201(config, m_sio, 9'830'000); // D9.83B0
// TODO: one of these is for console, other is keyboard
RS232_PORT(config, m_serial[0], default_rs232_devices, "terminal");
m_serial[0]->set_option_device_input_defaults("terminal", DEVICE_INPUT_DEFAULTS_NAME(terminal));
m_sio->out_txda_callback().set(m_serial[0], FUNC(rs232_port_device::write_txd));
m_sio->out_dtra_callback().set(m_serial[0], FUNC(rs232_port_device::write_dtr));
m_sio->out_rtsa_callback().set(m_serial[0], FUNC(rs232_port_device::write_rts));
@ -162,11 +160,15 @@ void luna_68k_state::luna(machine_config &config)
m_serial[1]->rxd_handler().set(m_sio, FUNC(upd7201_device::rxb_w));
m_serial[1]->cts_handler().set(m_sio, FUNC(upd7201_device::ctsb_w));
AM9513(config, m_stc, 9'830'000 / 2); // FIXME: clock? sources?
AM9513(config, m_stc, 9'830'000); // FIXME: clock? sources?
m_stc->out4_cb().set(m_sio, FUNC(upd7201_device::rxca_w));
m_stc->out4_cb().append(m_sio, FUNC(upd7201_device::txca_w));
m_stc->out5_cb().set(m_sio, FUNC(upd7201_device::rxcb_w));
m_stc->out5_cb().append(m_sio, FUNC(upd7201_device::txcb_w));
// HACK: arbitrary input clock for am9513 gate1
clock_device &stc_clock(CLOCK(config, "stc_clock", 1'000'000));
stc_clock.signal_handler().set(m_stc, FUNC(am9513_device::gate1_w));
}
ROM_START(luna)