Date   : Thu, 29 Sep 1994 16:05:46 +0000
From   : lamcw <lamcw@...>
Subject: Re: CRTC and ULA emulation

Chris Rae wrote:

;Btw, why do Revs and Elite use split-screen modes at all? I 
;haven't played Elite but I don't remember Revs having anything 
;split-screenish...

well, for Elite, i guess it's speed - 2 colours for fast 3D animation and
the 4 colors for the control panel at the bottom really make a difference.

as for Revs, could be to scrounge more memory!

;How exactly do these games time it? Is it actually timed by instructions? 
;If it is, then all the instructions would need to use exactly the right 
;number of clocks! *Shudder*

your VIA timers should try to decrement at the same pace as the opcodes
are executed. mine do but only approximately!


;I still can't get my keyboard to work!

this was the toughest part for me (so far)


chris lam.