Msg: 925 *Conference*
11-14-91 20:12:45
From: TRACY ALLEN
To : RICHARD HANSON
Subj: REPLY TO MSG #901 (WANDA!)
The guy who wrote the tachometer project came out with it as a commercial product, along with some "tachometer" and some "voltmeter" and some "chart recorder" software. I talked to him not more than 6 months ago, and he sent me his catalog. It was economical and looked like a pretty good product. Maybe he would be interested in selling through club100, because he has not carried an ad in P100 for a couple of years. He did carry an ad there for a few monthas after his article appeeared. But you cant't take on any new products, right? That !*$)(#*$ catalog! The cassette port is connected directly to the 80c85 cpu, through a level-reducer on output and a filter and comparator on input. The direct cpu serial i/o is potentially very high speed interface, and it is really a shame to waste it on a cassette. Yes, it could be another general purpose serial i/o or UART. Software UART software for the 8080 is available public domain. But.. there is that dumb filter and level shifter. A major cut and paste job. -- Tracy