davis@utx1.UUCP (Gary A. Davis) (07/22/87)
in article <500@otto.COM>, rex@otto.COM (Rex Jolliff) says: > Posted: Sat Jul 18 08:34:07 1987 > > > I was thinking of buying a coco (2 or 3) and I was wondering if the rs-232 > port is all hardware or if any of it is implemented in software. > > Rex. The coco comes with a serial port with 4 pins (send, rcv, gnd, status). It is implemented in software by waiting for ready, transmitting a bit and then delaying based on a pokeable variable and finally back to waiting for ready. I have no problem transmitting (to a printer) at 9600 with this port. Modem communications which is bidirectional is limited to 300 with many terminal emulators but some can hack 1200. Optionally, a hardware port is available (I think it has been discontinued, but they are still around) called a Deluxe RS232 Pack. It plugs into the rom port or one of the (optional) multi-pak ports. I think this allows upto 19.2k. Many people get both the multi-pak and the RS232 pack and plug the modem into it leaving the serial port for the printer. Gary -- Gary A. Davis Racal-Milgo, P.O. Box 407044, Fort Lauderdale, Fl 33340, (305) 476-4393 ihnp4!allegra!novavax!utx1!davis