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author AJR <ajrhacker@users.noreply.github.com>2017-10-29 18:50:18 -0400
committer AJR <ajrhacker@users.noreply.github.com>2017-10-29 18:50:18 -0400
commit445cb38e0aa80fc6040027d8982a4e03a09f4d96 (patch)
treefe0c1876621ed43cf209868a6aeccddbb2ab1172
parent5cd4c55b9b94d7e59c325ef6a0e1ba1d6583228d (diff)
cb2001: IRQ acknowledgment (nw)
-rw-r--r--src/mame/drivers/cb2001.cpp11
1 files changed, 9 insertions, 2 deletions
diff --git a/src/mame/drivers/cb2001.cpp b/src/mame/drivers/cb2001.cpp
index 738e4b73ca5..0c0afba925a 100644
--- a/src/mame/drivers/cb2001.cpp
+++ b/src/mame/drivers/cb2001.cpp
@@ -80,6 +80,7 @@ public:
DECLARE_PALETTE_INIT(cb2001);
uint32_t screen_update_cb2001(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
INTERRUPT_GEN_MEMBER(vblank_irq);
+ DECLARE_READ8_MEMBER(irq_ack_r);
required_device<cpu_device> m_maincpu;
required_device<gfxdecode_device> m_gfxdecode;
required_device<palette_device> m_palette;
@@ -578,7 +579,7 @@ static ADDRESS_MAP_START( cb2001_io, AS_IO, 16, cb2001_state )
AM_RANGE(0x20, 0x21) AM_DEVREAD8("aysnd", ay8910_device, data_r, 0xff00)
AM_RANGE(0x22, 0x23) AM_DEVWRITE8("aysnd", ay8910_device, data_address_w, 0xffff)
- AM_RANGE(0x30, 0x31) AM_WRITE(cb2001_vidctrl_w)
+ AM_RANGE(0x30, 0x31) AM_READ8(irq_ack_r, 0x00ff) AM_WRITE(cb2001_vidctrl_w)
AM_RANGE(0x32, 0x33) AM_WRITE(cb2001_vidctrl2_w)
ADDRESS_MAP_END
@@ -747,7 +748,13 @@ INPUT_PORTS_END
INTERRUPT_GEN_MEMBER(cb2001_state::vblank_irq)
{
- generic_pulse_irq_line(device.execute(), NEC_INPUT_LINE_INTP0, 1);
+ m_maincpu->set_input_line(NEC_INPUT_LINE_INTP0, ASSERT_LINE);
+}
+
+READ8_MEMBER(cb2001_state::irq_ack_r)
+{
+ m_maincpu->set_input_line(NEC_INPUT_LINE_INTP0, CLEAR_LINE);
+ return 0xff;
}
static const gfx_layout cb2001_layout =