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PC-88VA: fixed irq generation, but FDC still won't work for whatever reason

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This commit is contained in:
Angelo Salese 2012-11-20 21:11:35 +00:00
parent be33d5af34
commit dc05911d86
1 changed files with 44 additions and 9 deletions
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53
src/mess/drivers/pc88va.c
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@ -28,8 +28,8 @@
#include "machine/upd765.h"
#include "sound/2203intf.h"
#include "formats/mfi_dsk.h"
#include "formats/pc_dsk.h"
#include "formats/xdf_dsk.h"
#include "formats/d88_dsk.h"
/* Note: for the time being, just disable FDC CPU, it's for PC-8801 compatibility mode anyway ... */
#define TEST_SUBFDC 0
@ -128,6 +128,8 @@ public:
DECLARE_READ8_MEMBER(get_slave_ack);
DECLARE_WRITE_LINE_MEMBER(pc88va_pit_out0_changed);
DECLARE_WRITE_LINE_MEMBER(pc88va_upd765_interrupt);
UINT8 m_fdc_ctrl_2;
TIMER_CALLBACK_MEMBER(pc88va_fdc_timer);
void upd765_interrupt(bool state);
};
@ -987,10 +989,19 @@ READ8_MEMBER(pc88va_state::pc88va_fdc_r)
return 0xff;
}
TIMER_CALLBACK_MEMBER(pc88va_state::pc88va_fdc_timer)
{
if(m_fdc_ctrl_2 & 4) // XTMASK
{
pic8259_ir3_w(machine().device( "pic8259_slave"), 0);
pic8259_ir3_w(machine().device( "pic8259_slave"), 1);
}
}
WRITE8_MEMBER(pc88va_state::pc88va_fdc_w)
{
printf("%08x %02x\n",offset,data);
switch(offset*2)
printf("%08x %02x\n",offset<<1,data);
switch(offset<<1)
{
/*
---- ---x MODE: FDC op mode (0) Intelligent (1) DMA
@ -1022,7 +1033,15 @@ WRITE8_MEMBER(pc88va_state::pc88va_fdc_w)
---- ---x TTRG: FDC timer trigger (0) FDC timer clearing (1) FDC timer start
*/
case 0x06:
printf("%02x\n",data);
//printf("%02x\n",data);
m_fdc_ctrl_2 = data;
if(data & 1)
machine().scheduler().timer_set(attotime::from_msec(100), timer_expired_delegate(FUNC(pc88va_state::pc88va_fdc_timer),this));
if(data & 0x80) // correct?
machine().device<upd765a_device>("upd765")->reset();
break; // FDC control port 2
}
}
@ -1051,6 +1070,7 @@ TIMER_CALLBACK_MEMBER(pc88va_state::t3_mouse_callback)
{
if(m_timer3_io_reg & 0x80)
{
pic8259_ir5_w(machine().device("pic8259_slave"), 0);
pic8259_ir5_w(machine().device("pic8259_slave"), 1);
m_t3_mouse_timer->adjust(attotime::from_hz(120 >> (m_timer3_io_reg & 3)));
}
@ -1560,6 +1580,10 @@ void pc88va_state::machine_start()
m_t3_mouse_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(pc88va_state::t3_mouse_callback),this));
m_t3_mouse_timer->adjust(attotime::never);
machine().device<upd765a_device>("upd765")->setup_intrq_cb(upd765a_device::line_cb(FUNC(pc88va_state::upd765_interrupt), this));
machine().device<floppy_connector>("upd765:0")->get_device()->set_rpm(300);
machine().device<floppy_connector>("upd765:1")->get_device()->set_rpm(300);
machine().device<upd765a_device>("upd765")->set_rate(250000);
}
void pc88va_state::machine_reset()
@ -1592,12 +1616,17 @@ void pc88va_state::machine_reset()
INTERRUPT_GEN_MEMBER(pc88va_state::pc88va_vrtc_irq)
{
pic8259_ir2_w(machine().device("pic8259_master"), 0);
pic8259_ir2_w(machine().device("pic8259_master"), 1);
}
WRITE_LINE_MEMBER(pc88va_state::pc88va_pit_out0_changed)
{
pic8259_ir0_w(machine().device("pic8259_master"), 1);
if(state)
{
pic8259_ir0_w(machine().device("pic8259_master"), 0);
pic8259_ir0_w(machine().device("pic8259_master"), 1);
}
}
static const struct pit8253_config pc88va_pit8253_config =
@ -1627,10 +1656,16 @@ static const struct pit8253_config pc88va_pit8253_config =
void pc88va_state::upd765_interrupt(bool state)
{
if(m_fdc_mode)
pic8259_ir3_w(machine().device( "pic8259_slave"), state);
if(m_fdc_mode && state)
{
//printf("%d\n",state);
pic8259_ir3_w(machine().device( "pic8259_slave"), 0);
pic8259_ir3_w(machine().device( "pic8259_slave"), 1);
}
#if TEST_SUBFDC
else
machine().device("fdccpu")->execute().set_input_line(0, HOLD_LINE);
#endif
}
@ -1648,9 +1683,9 @@ static const ym2203_interface pc88va_ym2203_intf =
};
static const floppy_format_type pc88va_floppy_formats[] = {
FLOPPY_PC_FORMAT,
FLOPPY_XDF_FORMAT,
FLOPPY_MFI_FORMAT,
FLOPPY_D88_FORMAT,
NULL
};
@ -1691,7 +1726,7 @@ static MACHINE_CONFIG_START( pc88va, pc88va_state )
MCFG_PIC8259_ADD( "pic8259_master", pc88va_pic8259_master_config )
MCFG_PIC8259_ADD( "pic8259_slave", pc88va_pic8259_slave_config )
MCFG_UPD765A_ADD("upd765", true, true)
MCFG_UPD765A_ADD("upd765", false, true)
MCFG_FLOPPY_DRIVE_ADD("upd765:0", pc88va_floppies, "525hd", 0, pc88va_floppy_formats)
MCFG_FLOPPY_DRIVE_ADD("upd765:1", pc88va_floppies, "525hd", 0, pc88va_floppy_formats)
MCFG_SOFTWARE_LIST_ADD("disk_list","pc88va")