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Was the datapoint 2200 a brand new machine or was it influenced by others esp. wrt. the assembly language instruction set? Looking up Datapoint on Wikipedia sh
by canucker2016 3y ago
Was the datapoint 2200 a brand new machine or was it influenced by others esp. wrt. the assembly language instruction set?
Looking up Datapoint on Wikipedia shows a predecessor box, the 3300. But did the new designers of the 2200 totally ignore the 3300 instruction set? The 3300 seems to have used shift-registers as well.
Other data terminals at that time or radio equipment these designers might have used before?
Thx
https://en.m.wikipedia.org/wiki/Datapoint https://en.m.wikipedia.org/wiki/Datapoint
https://en.m.wikipedia.org/wiki/Datapoint_3300 https://en.m.wikipedia.org/wiki/Datapoint_3300
- kens 3y agoThe Datapoint 3300 was strictly a terminal. It was not programmable and did not have an instruction set. It basically had counters for the cursor position and put characters into memory at that position, and had a ROM to generate characters. Manual: http://bitsavers.org/pdf/datapoint/3300/70116_3300termMaint_Dec76.pdf http://bitsavers.org/pdf/datapoint/3300/70116_3300termMaint_... I don't think the Datapoint 2200 had any specific influences, at least none that I could find. Keep in mind that at the time, it was fairly common to make a processor out of TTL chips. People would make a custom processor for random things like a CNC controller or a video game. These processors were usually ad hoc, with an instruction set that had the features that were needed. If people were going to copy something, it was often a PDP-8 or 11 or a Data General NOVA.