Re: IIGS Acceleration Idea

[aiiadict@gmail.com]

timing:

a computer has to know when the bus is available to be used by the CPU.

the apple II computer uses the data bus to display video, because the
display is memory mapped.

the apple II computer uses the bus in this way:

1)load/save data to RAM
2)fetch next video byte
1)load/save data to RAM
2)fetch next video byte.

If you put in a faster oscillator, the CPU runs faster, so does the
video.

The original oscillator runs the motherboard at the correct speed to
make the video circuits output NTSC frequency.

NTSC frequency is required by your monitor (it takes that signal as
input and displays it on the glass)

if you speed up the motherboard, you get a signal from the video
circuits which isn't NTSC....

how about this:  replace oscillator on motherboard, replace slow chips
with faster ones, and modify your monitor to work with the faster
speeds ?

:-P