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Re: Apple //e as serial terminal
- Subject: Re: Apple //e as serial terminal
- From: supertimer@aol.com (Supertimer)
- Date: 1999/09/23
- Newsgroups: comp.sys.apple2
- Organization: AOL http://www.aol.com
- References: <199909222020.NAA10218@acid.bpm.ai>
BPM Mixmaster Remailer (Penman) <remailer@bpm.ai> wrote:
>The dropped characters with the Super Serial Card could be corrected, if
>memory serves, but changing the way the card handles interrupts. Going
>strictly by memory, I remember having to modify the card, near the lower
>left. I can't remember if I had to put a drop of solder on to two points
>to close a connection (most probable), or cut a trace.
>
>Anyone remember this one and can fill in the details? I DO remember that
>this solved my problems when using the card. (I also remember that it
>worked for a SSC clone, which was trace-for-trace identical to the SSC)
On the real Super Serial Card, it is a bit more complicated.
There is a flaw in the 6551 chip used in early Super Serial
Cards (some call it a feature) that causes this problem. A
6551 replacement is required to fix this.