At 05:15 PM 9/2/99 +0200, you wrote:
>To reset a interrupt from a horizontal line interrupt (reg #19), I used
>to set the interupt enable bit to zero and then back on again. Turning
>the bit off also dropped the interrupt.
>This was better because I could now make the interupt line drop in
>lesser time, I just had two write twice to a register. With the official
>read methode I had to write a register, wait, read a status register and
>then put #15 back to zero (as assumed by the standard interrupt handler)
Nice trick! I didn't know it.
The fact that this trick works also tells something about the internal
workings of the VDP. I expect Frits can use this info for perfecting NLMSX.
Bye,
Maarten
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