mrb@psueclb.BITNET (08/23/87)
Hi --- { I also asked this question on IBM-PC.DIGEST, so apologies if you are seeing it twice } A friend of mine is using a HP7470A plotter with Lotus 1-2-3 via the COM1 RS-232C interface. Now, a quickie 3-wire hookup (TD, RD, and GND) works fine with a couple control lines at the PC end tied active, but .... I'd appreciate finding out the "official" hookup/switch configuration/etc. so we can have some handshaking. Right now, he has to keep the data rate low so as to avoid overrunning the plotter buffer, not to mention other obvious ungood drawbacks. So, if you could e-mail me what works for you, I'd appreciate it very much. Thank you in advance, M. R. Baker MRB @ PSUECL (via BITNET, or one of the other gateways that end up at Penn State