Subj : Re: Plus 4 rom error - is there any place to report it?
To   : George
From : Johann Klasek - swap last two domai
Date : Sat Jun 22 2024 08:47 pm

George <[email protected]> wrote:
> If anyone has a Plus/4 and has nothing better to do, it would be helpful if
> you could run the programs listed below and report the results.  The
> programs report the total number of ACIA interrupts which occur while
> transmitting 256 bytes of data continuously at 2400 baud.  They should be
> run with nothing plugged into the User Port - no modem or anything.
>
> My suspicion is that the single-byte transmit buffer of the Plus/4 results
> in back-to-back double interrupts being generated for each byte
> transmitted, which can cause problems at high speed.  If that's the case,
> the first program will report about 512 interrupts, and the second about
> 256.  But there may be no difference.  Anyway, I just need to know.
[..]

Did anyone catched up to this? Has it been solved.

Maybe I could give a try, if still needed.

Best,
JEEK

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