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cb2001: reworked interrupt [Alex Jackson]

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This commit is contained in:
Roberto Zandona 2011-01-22 19:30:11 +00:00
parent ebcfde1e9c
commit d5f2a3933b
1 changed files with 11 additions and 3 deletions
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14
src/mame/drivers/cb2001.c
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@ -44,6 +44,7 @@ this seems more like 8-bit hardware, maybe it should be v25, not v35...
#include "cpu/nec/nec.h"
#include "sound/ay8910.h"
#include "machine/8255ppi.h"
#include "deprecat.h"
#define xxxx 0x90 /* Unknown */
@ -51,7 +52,7 @@ static const UINT8 cb2001_decryption_table[256] = {
0xe8,xxxx,xxxx,xxxx,0x80,0xe4,0x12,0x2f, 0x3c,xxxx,xxxx,0x23,xxxx,xxxx,xxxx,0x5f, /* 00 */
// ssss ---- **** pppp pppp ssss pppp pppp
0x86,xxxx,xxxx,0x27,0x1c,xxxx,xxxx,xxxx, 0x32,0x40,0xa0,0xd3,0x3a,0x14,0x89,0x1f, /* 10 */
// wwww **** pppp pppp pppp pppp pppp ppp? pppp pppp ssss
// rrrr **** pppp pppp pppp pppp pppp ppp? pppp pppp ssss
xxxx,0x8e,xxxx,0x0f,xxxx,0x49,0xb5,xxxx, 0x56,xxxx,xxxx,0x75,0x33,0xb6,xxxx,0x39, /* 20 */
// ssss ssss pppp pppp pppp ssss pppp pppp ****
0x89,xxxx,xxxx,xxxx,xxxx,0x22,0x5b,xxxx, xxxx,xxxx,0x74,xxxx,xxxx,0xa6,xxxx,0x74, /* 30 */
@ -717,7 +718,10 @@ INPUT_PORTS_END
static INTERRUPT_GEN( vblank_irq )
{
cpu_set_input_line_and_vector(device,0,HOLD_LINE,0x60/4);
if (cpu_getiloops(device) == 0)
cpu_set_input_line(device, NEC_INPUT_LINE_INTP0, ASSERT_LINE);
else
cpu_set_input_line(device, NEC_INPUT_LINE_INTP0, CLEAR_LINE);
}
static const gfx_layout cb2001_layout =
@ -813,7 +817,7 @@ static MACHINE_CONFIG_START( cb2001, driver_device )
MCFG_CPU_CONFIG(cb2001_config)
MCFG_CPU_PROGRAM_MAP(cb2001_map)
MCFG_CPU_IO_MAP(cb2001_io)
MCFG_CPU_VBLANK_INT("screen", vblank_irq)
MCFG_CPU_VBLANK_INT_HACK(vblank_irq, 2)
MCFG_PPI8255_ADD( "ppi8255_0", cb2001_ppi8255_intf[0] )
MCFG_PPI8255_ADD( "ppi8255_1", cb2001_ppi8255_intf[1] )
@ -872,3 +876,7 @@ GAME( 2001, scherrym, 0, cb2001, cb2001, 0, ROT0, "Dyna", "Super C