static void store_ciapb(cia_context_t *cia_context, CLOCK rclk, BYTE byte)
{
/* Falling edge triggers light pen. */
if ((byte ^ 0x10) & cia_context->old_pb & 0x10) {
vicii_trigger_light_pen(rclk);
}
}
static void store_ciapa(cia_context_t *cia_context, CLOCK rclk, BYTE b)
{
unsigned int i, m;
for (m = 0x1, i = 0; i < 8; m <<= 1, i++) {
if ((keyarr[i] & 0x10) && (!(b & m)))
vicii_trigger_light_pen(maincpu_clk);
}
}
/* Lightpen trigger function; needs to trigger both VICII and VDC */
void c128_trigger_light_pen(CLOCK mclk)
{
vicii_trigger_light_pen(mclk);
vdc_trigger_light_pen(mclk);
}