Re: Hopefully last dumb newbie question.

[spec@vax2.concordia.ca (Mitchell Spector)]

In article dempson@actrix.gen.nz (David Empson) writes...

>The only slowdown on a ROM 3 would be due to the synchronization delays
>introduced by shadowing writes in locations $0800-$0BFF of bank 0 into
>bank $E0, i.e. 1 MHz writes instead of 2.8 MHz.  Nothing outside that
>address range is affected.
> 
>This would have a variable effect depending on what was using that area
>of memory.  Applesoft BASIC programs normally run in that area, but they
>aren't written to (except while editing or being loaded).  Under GS/OS,
>it would tend to be application or toolbox direct page/stack space
>(reasonably major impact).

    Hmm, perhaps it is not as trivial a glitch as I first thought. Is
it possible my ROM 3 (even with 15 MHz Zip GS accelerator) is running
slower than it should be, and has for all these years?

    Is there a way I can confirm, for certain, whether Alternate
Display Mode is constantly active on my system? (perhaps by looking
up an address in memory). If it is indeed constantly active, and it
is slowing down my system, my next question would be how can I force
it off? A small INIT was written by Jay Krell to disable the two
programmer CDA's locked into my menu, could it be modified to turn
Alternative Display Mode off as well?

Mitchell Spector
spec@vax2.concordia.ca