It’s very simple to operate. Just dial the phone number at the location of the TRS-80 you desire to communicate with; after the connection is made, each telephone handset is placed on its interface. Now you’re ready to receive and transmit data. Requires RS-232 Serial Interface Card, ...
One day I was asked into my bosses office and told that we needed to produce a boot ROM for a new Z80-based system. I was then shown the prototype, which was already getting its preliminary FCC evaluation. It was the Model 4P, and its design had gone so smoothly that word of its ...
I don’t remember the date, but I still remember sitting in Harold Mauch’s office at Percom Data Company in Garland, Texas. Hal had been working on a way to do double density floppy I/O on the TRS-80 Model I. The data was read in a polling loop, and it took just a few too ...