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aristmk6: hook IRQ registers, actual sources still unknown

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This commit is contained in:
MetalliC 2016-11-24 23:13:43 +02:00
parent 0278e99d02
commit 33e73876b7
1 changed files with 86 additions and 2 deletions
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88
src/mame/drivers/aristmk6.cpp
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@ -41,12 +41,23 @@ public:
m_vram(*this, "vram")
{ }
uint32_t m_test_x,m_test_y,m_start_offs;
uint8_t m_type;
u32 m_test_x,m_test_y,m_start_offs;
u8 m_type;
u8 irl0pend, irl0en;
u8 irl1pend, irl1en;
u8 irl2pend, irl2en; // UARTs ?
u8 irl3pend0, irl3en0;
u8 irl3pend1, irl3en1;
void testIrq();
DECLARE_READ8_MEMBER(irqpend_r);
DECLARE_WRITE8_MEMBER(irqen_w);
DECLARE_READ8_MEMBER(test_r);
DECLARE_WRITE64_MEMBER(eeprom_w);
DECLARE_READ64_MEMBER(hwver_r);
virtual void video_start() override;
virtual void machine_reset() override;
uint32_t screen_update_aristmk6(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
required_device<cpu_device> m_maincpu;
required_device<ns16550_device> m_uart0;
@ -60,6 +71,10 @@ public:
void aristmk6_state::video_start()
{
}
void aristmk6_state::machine_reset()
{
irl0pend = irl0en = irl1pend = irl1en = irl2pend = irl2en = irl3pend0 = irl3en0 = irl3pend1 = irl3en1 = 0;
}
uint32_t aristmk6_state::screen_update_aristmk6(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
@ -67,6 +82,11 @@ uint32_t aristmk6_state::screen_update_aristmk6(screen_device &screen, bitmap_rg
int x,y,count;
const uint8_t *blit_ram = memregion("maincpu")->base();
if (machine().input().code_pressed(KEYCODE_U)) {
irl2pend |= 2;
testIrq();
}
if(machine().input().code_pressed(KEYCODE_Z))
m_test_x++;
@ -168,6 +188,68 @@ uint32_t aristmk6_state::screen_update_aristmk6(screen_device &screen, bitmap_rg
return 0;
}
void aristmk6_state::testIrq()
{
m_maincpu->set_input_line(SH4_IRL0, (irl0pend & irl0en) ? ASSERT_LINE : CLEAR_LINE);
m_maincpu->set_input_line(SH4_IRL1, (irl1pend & irl1en) ? ASSERT_LINE : CLEAR_LINE);
m_maincpu->set_input_line(SH4_IRL2, (irl2pend & irl2en) ? ASSERT_LINE : CLEAR_LINE);
m_maincpu->set_input_line(SH4_IRL3, ((irl3pend0 & irl3en0) || (irl3pend1 & irl3en1)) ? ASSERT_LINE : CLEAR_LINE);
}
READ8_MEMBER(aristmk6_state::irqpend_r)
{
switch (offset)
{
case 0x00e8 - 0x00e8:
return irl0pend;
case 0x00f0 - 0x00e8:
return irl1pend;
case 0x00f8 - 0x00e8:
return irl2pend;
case 0x0100 - 0x00e8:
return irl3pend0;
case 0x0101 - 0x00e8:
return irl3pend1;
default:
logerror("Unhandled read %08x\n", 0x120000e8 + offset);
return 0;
}
}
WRITE8_MEMBER(aristmk6_state::irqen_w)
{
switch (offset)
{
case 0x0108 - 0x0108:
irl0en = data;
irl0pend &= ~data;
testIrq();
break;
case 0x0110 - 0x0108:
irl1en = data;
irl1pend &= ~data;
testIrq();
break;
case 0x0118 - 0x0108:
irl2en = data;
irl2pend &= ~data;
testIrq();
break;
case 0x0120 - 0x0108:
irl3en0 = data;
irl3pend0 &= ~data;
testIrq();
break;
case 0x0121 - 0x0108:
irl3en1 = data;
irl3pend1 &= ~data;
testIrq();
break;
default:
logerror("Unhandled write %08x %02x\n", 0x12000108 + offset, data);
}
}
READ8_MEMBER(aristmk6_state::test_r)
{
static int flip;
@ -216,6 +298,8 @@ static ADDRESS_MAP_START( aristmk6_map, AS_PROGRAM, 64, aristmk6_state )
AM_RANGE(0x12000078, 0x1200007f) AM_WRITENOP // watchdog ??
AM_RANGE(0x12000080, 0x12000087) AM_WRITENOP // 0-1-2 written here repeatedly, diag LED or smth ?
AM_RANGE(0x120000E0, 0x120000E7) AM_READ(hwver_r)
AM_RANGE(0x120000E8, 0x12000107) AM_READ8(irqpend_r, 0xffffffffffffffffU)
AM_RANGE(0x12000108, 0x12000127) AM_WRITE8(irqen_w, 0xffffffffffffffffU)
AM_RANGE(0x12400010, 0x12400017) AM_DEVREADWRITE8("uart1", ns16550_device, ins8250_r, ins8250_w, 0xffffffffffffffffU)
AM_RANGE(0x12400018, 0x1240001f) AM_DEVREADWRITE8("uart0", ns16550_device, ins8250_r, ins8250_w, 0xffffffffffffffffU)
AM_RANGE(0x13800000, 0x13800007) AM_READ8(test_r, 0xffffffffffffffffU)