On Thu, 25 Jun 1998 17:01:27 -0600 Harrison Cooper writes: > I'd be interested in at least the ISA interface, >figure >its just basically a parallel dump of data and control for reads and >writes. Hooking up an ISA modem to a PIC system would be real simple. You'd just need an 8-bit parallel interface to the 8 registers in the 16550 chip. So 8 data pins, 3 address pins, a read strobe and a write strobe. It should be OK to tie the other address pins to 3Fx and set the modem for COM1. And it may be useful to use the interrupt feature. I don't think you need any clocks to a modem card, though some may need +-12V for the analog circuitry. _____________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail from Juno at http://www.juno.com Or call Juno at (800) 654-JUNO [654-5866]