From: William Levak (wlevak_at_sdf.lonestar.org)
Date: 2009-01-30 07:30:48
On Thu, 29 Jan 2009, Ethan Dicks wrote:
> On Thu, Jan 29, 2009 at 12:49 AM, William Levak <wlevak@sdf.lonestar.org> wrote:
>> The SP has a serial port inside (DB25 connector). A few years ago I did get
>> it to work at 300 baud. It did not work at higher speeds. One problem was
>> that it required a 2-4 second line delay (time after sending a return until
>> it was ready again).
>
> Was this from BASIC or other high-level language? ISTR there's just a
> 6850 or 6551 ACIA-type UART in there, so from machine language, it
> should be trivial to drive at 9600 bps.
It was from one on the supplied high level languges, I don't remeber
which.
> It would be strange to learn that the serial interface in the SuperPET
> didn't work faster than 300bps, but perhaps they figured it'd only be
> used for contemporary modems, so it didn't have to be efficient.
It was a Hayes 1200 baud modem, with a standard serial cable.
wlevak@sdf.lonestar.org
SDF Public Access UNIX System - http://sdf.lonestar.org
Message was sent through the cbm-hackers mailing list
Archive generated by hypermail pre-2.1.8.