On 2025Jun 22,, at 11:14 PM, Bob Rosenbloom via cctalk <cctalk@classiccmp.org> wrote: > > There were a whole bunch of cartridge / cassette systems made to record and > play back RS-232 data. Sykes (made the 4912 cassette unit for Tektronix) , > Memodyne, Teac, Sy/MAX and many others made them. I have a Tektronix 4923 > that I've used in line with a 4006 terminal connected to a PDP-8e. Used to > load / save programs etc. A bit awkward to use sometimes but it's better, and > faster, than paper tape. Nice that it's vintage also. Some of these are > incremental tape drive systems and can record single characters at a time. I > had a Plessey recorder that could do that though it was a 7 bit parallel > system.
Just as a note if you’re unaware and of any interest: the 4923 has an 8008 processor in it. I have one as well, for years, though have never tried to use it, didn’t have a cartridge or a manual. Just searched, there is (now) a manual available on line.
