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luna_68k: add am9513 gate1 clock

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This commit is contained in:
Patrick Mackinlay 2021-10-08 16:15:00 +07:00
parent cab3d85d4f
commit 16fc6c6e29
1 changed files with 12 additions and 2 deletions
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14
src/mame/drivers/luna_68k.cpp
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@ -22,7 +22,6 @@
* DPU8 video/framebuffer, Bt458 @ 108MHz
* CMC communications (GPIB, Ethernet, serial), 68020 @ 12.5MHz?
*
* gets stuck at 0x40003880 when testing the am5913 status, expects output 3 active
*/
#include "emu.h"
@ -35,7 +34,6 @@
#include "machine/mc146818.h"
#include "machine/z80sio.h"
#include "machine/am9513.h"
#include "machine/timer.h"
// busses and connectors
#include "bus/rs232/rs232.h"
@ -77,6 +75,13 @@ 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;
@ -84,14 +89,19 @@ private:
required_device<upd7201_device> m_sio;
required_device<am9513_device> m_stc;
required_device_array<rs232_port_device, 2> m_serial;
emu_timer *m_timer;
};
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()