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Fixed gearbox input, flipped around irqs for testing.

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This commit is contained in:
angelosa 2016-01-29 02:01:14 +01:00
parent 96c5f17b73
commit 4ad98de1dc
2 changed files with 22 additions and 9 deletions
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26
src/mame/drivers/overdriv.cpp
View File

@ -70,21 +70,32 @@ WRITE16_MEMBER(overdriv_state::eeprom_w)
TIMER_DEVICE_CALLBACK_MEMBER(overdriv_state::overdriv_cpuA_scanline)
{
const int timer_threshold = 160;
int scanline = param;
/* TODO: irqs routines are TOO slow right now, it ends up firing spurious irqs for whatever reason (shared ram fighting?) */
/* this is a temporary solution to get rid of deprecat lib and the crashes, but also makes the game timer to be too slow */
if(scanline == 256 && m_screen->frame_number() & 1) // vblank-out irq
m_fake_timer ++;
// TODO: irqs routines are TOO slow right now, it ends up firing spurious irqs for whatever reason (shared ram fighting?)
// this is a temporary solution to get rid of deprecat lib and the crashes, but also makes the game timer to be too slow.
// Update: gameplay is actually too fast compared to timer, first attract mode shouldn't even surpass first blue car on right.
if(scanline == 256) // vblank-out irq
{
// m_screen->frame_number() & 1
m_maincpu->set_input_line(4, HOLD_LINE);
else if((scanline % 128) == 0) // timer irq
m_subcpu->set_input_line(4, HOLD_LINE); // likely wrong
}
else if(m_fake_timer >= timer_threshold) // timer irq
{
m_fake_timer -= timer_threshold;
m_maincpu->set_input_line(5, HOLD_LINE);
}
}
INTERRUPT_GEN_MEMBER(overdriv_state::cpuB_interrupt)
{
// this doesn't get turned on until the irq has happened? wrong irq?
if (m_k053246->k053246_is_irq_enabled())
m_subcpu->set_input_line(4, HOLD_LINE); // likely wrong
m_subcpu->set_input_line(6, HOLD_LINE); // likely wrong
}
@ -138,7 +149,6 @@ WRITE16_MEMBER(overdriv_state::overdriv_cpuB_irq_x_w)
WRITE16_MEMBER(overdriv_state::overdriv_cpuB_irq_y_w)
{
m_subcpu->set_input_line(6, HOLD_LINE); // likely wrong
}
static ADDRESS_MAP_START( overdriv_master_map, AS_PROGRAM, 16, overdriv_state )
@ -203,6 +213,7 @@ static ADDRESS_MAP_START( overdriv_slave_map, AS_PROGRAM, 16, overdriv_state )
AM_RANGE(0x120000, 0x120001) AM_DEVREAD("k053246", k053247_device, k053246_word_r)
AM_RANGE(0x128000, 0x128001) AM_READWRITE(cpuB_ctrl_r, cpuB_ctrl_w) /* enable K053247 ROM reading, plus something else */
AM_RANGE(0x130000, 0x130007) AM_DEVREADWRITE8("k053246", k053247_device, k053246_r,k053246_w,0xffff)
//AM_RANGE(0x140000, 0x140001) used in later stages
AM_RANGE(0x200000, 0x203fff) AM_RAM AM_SHARE("share1")
AM_RANGE(0x208000, 0x20bfff) AM_RAM
AM_RANGE(0x218000, 0x219fff) AM_DEVREAD("k053250_1", k053250_device, rom_r)
@ -216,6 +227,7 @@ WRITE8_MEMBER(overdriv_state::sound_ack_w)
static ADDRESS_MAP_START( overdriv_sound_map, AS_PROGRAM, 8, overdriv_state )
AM_RANGE(0x0000, 0x0000) AM_WRITE(sound_ack_w)
// 0x012 read during explosions
// 0x180
AM_RANGE(0x0200, 0x0201) AM_DEVREADWRITE("ymsnd", ym2151_device,read,write)
AM_RANGE(0x0400, 0x042f) AM_DEVREADWRITE("k053260_1", k053260_device, read, write)
@ -231,7 +243,7 @@ ADDRESS_MAP_END
static INPUT_PORTS_START( overdriv )
PORT_START("INPUTS")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_TOGGLE
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON3 ) PORT_TOGGLE
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 )
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON2 )
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )

1
src/mame/includes/overdriv.h
View File

@ -58,6 +58,7 @@ public:
UINT32 screen_update_overdriv(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
INTERRUPT_GEN_MEMBER(cpuB_interrupt);
TIMER_DEVICE_CALLBACK_MEMBER(overdriv_cpuA_scanline);
int m_fake_timer;
K051316_CB_MEMBER(zoom_callback_1);
K051316_CB_MEMBER(zoom_callback_2);