db says:
As we were painfully made aware when people tried to
run comm
programs and they didn't work because we used the Z8530 to get dual
serial ports.
Hyperion was not alone in having trouble with comm ports. Columbia University (my alma
mater) reported in January 1984 that unmodified Kermit ran on Compaq and Columbia PCs, but
Eagle and Seequa needed custom code.
I highly recommend the Kermit mailing list archives
<http://www.columbia.edu/kermit/ftp/e/info-kermit.txt>; it contains massive amounts
of information for anyone interested in classic computers.
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