ir682@sdcc6.UUCP (Gerald Steinberg) (10/25/85)
I would like to know whether it is possible to use the Model 100 as a general purpose modem for other system (such as a dumb terminal, or a PC). Please send suggestions and experiences, if any.
johnw@reed.UUCP (John Windberg) (10/27/85)
I feel that project would be fairly easy with a simple basic program that accesses the port, remembering that in 100 basic the rs232 can be reached just like a file. A null modem between the rs232 of the 100 and the other terminal might do it. Also remember that there was a flaw in several of the 100's that render it unable to communicate both ways. I tried to use mom's 2000 as a file server for her 100 and transmissions only went one way but I forget which way.. oh well so much for thought. duhhhhhhhh John B. Windberg Reed College Portland Or johnw@reed
usenet@yojna1.UUCP (usenet signon) (11/02/85)
*** REPLACE THIS LINE WITH YOUR MESSAGE *** No, you cannot use the Model 100 as a general purpose modem. There is only one UART in the 100 and that is shared between the modem and the RS-232 port. PB3 of the 81C55 is the signal RS232C- and is used to gate the output of the IM-6402 UART to _EITHER_ the modem chip _OR_ the RS-232C drivers/ receivers. Sorry, you can't have your cake and eat it too. If you are interested in hacking, port B of the 81C55 is at address B2h. As an aside, I have had some fun playing with the UART from Basic. I have succeeded in sending 1, 1.5, and 2 stop bits; in sending 5, 6, 7, and 8 data bits; and in setting the baud rate to just about anything. I will be happy to share my information with anyone who needs it. 73 de Brian, WB6RQN ...!bellcore!yojna1!wb6rqn ...cp1!yojna1!wb6rqn