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32x, tentative kludge for blackthorne

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This commit is contained in:
kub 2022-11-21 21:08:39 +00:00
parent eb990fd62a
commit 4ec1247d23
6 changed files with 48 additions and 33 deletions
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6
pico/32x/pwm.c
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@ -41,13 +41,13 @@ void p32x_pwm_ctl_changed(void)
pwm.irq_reload = pwm.irq_timer;
pwm.irq_state = pwm_irq_opt ? PWM_IRQ_STOPPED: PWM_IRQ_LOCKED;
if (Pico32x.pwm_irq_cnt == 0)
if (Pico32x.pwm_irq_cnt <= 0)
Pico32x.pwm_irq_cnt = pwm.irq_reload;
}
static void do_pwm_irq(SH2 *sh2, unsigned int m68k_cycles)
{
p32x_trigger_irq(sh2, m68k_cycles, P32XI_PWM);
p32x_trigger_irq(NULL, m68k_cycles, P32XI_PWM);
if (Pico32x.regs[0x30 / 2] & P32XP_RTP) {
p32x_event_schedule(m68k_cycles, P32X_EVENT_PWM, pwm.cycles / 3 + 1);
@ -110,7 +110,7 @@ static void consume_fifo_do(SH2 *sh2, unsigned int m68k_cycles,
mem->pwm[pwm.ptr * 2 + 1] = pwm.current[1];
pwm.ptr = (pwm.ptr + 1) & (PWM_BUFF_LEN - 1);
if (--Pico32x.pwm_irq_cnt == 0) {
if (--Pico32x.pwm_irq_cnt <= 0) {
Pico32x.pwm_irq_cnt = pwm.irq_reload;
do_pwm_irq(sh2, m68k_cycles);
} else if (Pico32x.pwm_p[1] == 0 && pwm.irq_state >= PWM_IRQ_LOW) {