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Re: Apple IIc serial port problem?
- Subject: Re: Apple IIc serial port problem?
- From: dockery@griffin.cuc.ab.ca (Sean Dockery)
- Date: Wed, 27 Jul 1994 21:33:51 GMT
- Newsgroups: comp.sys.apple2
- Organization: Griffin Software Development
- References: <312ehg$r2g@vixen.cso.uiuc.edu>
autry@uxa.cso.uiuc.edu wrote the following article:
| What's this about certain Apple IIc serial ports having a hardware problem?
| How do I know if my IIc is one of them? (Other than I can't get anything to
| transfer 100% correctly over the serial port to my mac.)
The original Apple //c was installed with the incorrect crystal for its
modem port. The result was that higher modem speeds were not synchronized
with the speed of the ACIA (6551) driving the modem port, and interrupts
would be missed.