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Fixed timers in i8051 core. [Grull Osgo]

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This commit is contained in:
Roberto Fresca 2008-10-06 21:36:30 +00:00
parent c03c27eef3
commit d3cc1b9742
1 changed files with 5 additions and 3 deletions
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8
src/emu/cpu/i8051/i8051.c
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@ -402,11 +402,13 @@ static READ32_HANDLER((*hold_eram_iaddr_callback));
/* Any pending IRQ */
#define SERIALPORT_IRQ ((R_SCON & 0x03) && GET_ES)
#define TIMERS_IRQ ((GET_TF0 && GET_ET0) || (GET_TF1 && GET_ET1))
#define EXTERNAL_IRQ ((GET_IE0 && GET_EX0) || (GET_IE1 && GET_EX1))
#if (HAS_I8052 || HAS_I8752)
#define NO_PENDING_IRQ !(R_TCON & 0xaa) && !(SERIALPORT_IRQ) && !(GET_ET2 && (GET_TF2 || GET_EXF2))
#define NO_PENDING_IRQ !(TIMERS_IRQ) && !(EXTERNAL_IRQ) && !(SERIALPORT_IRQ) && !(GET_ET2 && (GET_TF2 || GET_EXF2))
#else
#define NO_PENDING_IRQ !(R_TCON & 0xaa) && !(SERIALPORT_IRQ)
#define NO_PENDING_IRQ !(TIMERS_IRQ) && !(EXTERNAL_IRQ) && !(SERIALPORT_IRQ)
#endif
/* Clear Current IRQ */
@ -606,7 +608,7 @@ int i8051_execute(int cycles)
if(PC != PPC) op = cpu_readop(PC);
//Update Timer (if any timers are running)
if((GET_TR0 && GET_ET0) || (GET_TR1 && GET_ET1))
if(GET_TR0 || GET_TR1)
update_timer(i8051.prev_used_cycles);
//Update Serial (if serial port sending data)