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 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 --- SoupGate-Win32 v1.05 * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3) .