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32x: implement VDP fill, improve PWM, division unit and scheduling

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Chaotix works but unstable


git-svn-id: file:///home/notaz/opt/svn/PicoDrive@794 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2009-09-29 13:38:07 +00:00
parent 87accdf72d
commit be20816c4c
8 changed files with 99 additions and 44 deletions
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7
pico/32x/pwm.c
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@ -29,13 +29,14 @@ void p32x_pwm_refresh(void)
// irq for every sample??
// FIXME: we need to hit more than once per line :(
void p32x_pwm_irq_check(void)
void p32x_pwm_irq_check(int new_line)
{
int tm = (Pico32x.regs[0x30 / 2] & 0x0f00) >> 8;
if (tm == 0)
return; // TODO: verify
Pico32x.pwm_irq_sample_cnt += pwm_line_samples;
if (new_line)
Pico32x.pwm_irq_sample_cnt += pwm_line_samples;
if (Pico32x.pwm_irq_sample_cnt >= (tm << 16)) {
Pico32x.pwm_irq_sample_cnt -= tm << 16;
Pico32x.sh2irqs |= P32XI_PWM;
@ -136,7 +137,7 @@ void p32x_pwm_update(int *buf32, int length, int stereo)
}
}
elprintf(EL_STATUS, "pwm_update: pwm_ptr %d, len %d, step %04x, done %d",
elprintf(EL_32X, "pwm_update: pwm_ptr %d, len %d, step %04x, done %d",
pwm_ptr, length, step, (pwmb - Pico32xMem->pwm) / 2);
pwm_ptr = 0;