stephenc@tekcae.CAX.TEK.COM (Stephen Coan) (05/07/91)
Back in 1983, I designed an interface to RS-232 for the C64. It uses three IC's, 1488, 1489, and a 7404. It uses a few additional capacitors and diodes to generate the +/- voltages necessary for operation with RS-232. This schematic shows connections for both DTE and DCE depending upon how you wire it, and includes TX, RTS, DTR, RX, DSR, CTS and DCD signals. I have sent this to half a dozen or so people over the years, posted it here twice previously, and am happy to ship it out. It prints out on a printer in ASCII Graph style. Anyone interested, drop me a line and I'll gladly forward a copy to you. I'm just posting this rather than the schematic itself to limit the size of the posting. The file is less than 9K in size. Regards, Steve Coan, Tektronix, Inc., Beaverton, OR stephenc@aice.bv.tek.com -- Steve Coan, AICE Team, 46-176 stephenc@aice.BV.TEK.COM