dobbs@marlin.UUCP (Lynn B. Dobbs) (08/01/86)
When Mike tries to run his serial port above 1200 baud, characters begin dropping out of the text. The system works very well at 1200 or below. Different terminal programs have been tried, as well as different modems. When logged onto a vax running unix, the vax understands all characters sent from the Kaypro, but the display still drops characters. Has anyone seen this problem? And does any one have a fix? Thanks.
treid@MITRE.ARPA (08/01/86)
I had a KP 2x (1984) with the same "feature". The graphics screen monitor is so slow that it cannot keep up above 1200 baud. Microcornucopia sells a new ROM for Kaypros which is supposed to get you up to about 4800 baud. The problem is with the line feed portion of the memory mapped I/O. From the time that you issue a LF at 9600 baud until the routine returns, you have "missed" 3 or 4 characters at the modem port. A possibility is to modify your modem 7 clone or kermit to issue an XOFF just before you do a line feed to shut off the incoming characters, do the LF, and then XON to continue receiving. (Your host will hate you.) What you really need is an asynchronous modem port handler. Check with the local Kaypro gurus and see if there is one. The problem can't be all that rare that someone hasn't done something. Good luck.
agordon%trout@NOSC.ARPA (Alan Gordon) (08/04/86)
------- There is a dumb terminal program in the Kaypro section of the SIMTEL20 archives called FASTTERM.COM which will not drop characters, even at 9600 baud. Al Gordon agordon@NOSC.ARPA -------