On Mon, 21 Sep 1998, Maarten ter Huurne wrote:
> At 09:14 PM 9/21/98 +0300, you wrote:
>
> >> Just try to catch the turbo R PAUSE button in Z80 ROM mode. If you succeed,
> >> I'll give you a big applause. I never managed to disable it, and I really
> >> wanted to, because pressing PAUSE gave away all our line interrupt tricks.
> >
> >Select RAM to addresses 0-#3FFF and put RETI command to #38. I bet you
> >don't have probblems after that. (Atleast, if you don't try to use BIOS
> >commands.)
>
> We (Mayhem) used a custom BIOS in RAM, but still the PAUSE key worked!
Of course the PAUSE key worked!!! This key is hardware implemented! I saw
it in a Panasonic FSA1WSX (MSX2+) and the PAUSE key access a circuit that
controls the clock flow. But this demands a special refresh circuit, which
I couldn't found, but I know this has to exist.
Anyway, are there others MSX that have this PAUSE key, except FSA1ST and
FSA1GT (both TURBO-R)?
Greetings from Brazil!
--------------------------------------------------------------
Marco Antonio Simon Dal Poz http://www.lsi.usp.br/~mdalpoz
[EMAIL PROTECTED] "The measure of success is the knowledge"
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