What is the best BASIC Pocket Computer

[Dave Britten]

(07-08-2020 11:52 AM)ZQ8000_dude Wrote:  

(07-07-2020 09:00 PM)Dave Britten Wrote:  This is the only custom EPROM card I have, so I can't say if others are similar. It's thicker than the ROM/RAM cards I have (BASIC, 3D Spreadsheet, 32 KB RAM).

Sorry I misunderstood, I thought maybe the cards with the "fixed" commercial software on e.g. 3D spreadsheet could be re-burnt with new data as they were just an EPROM "under the hood". I imagine this isn't the case though. But if I ever get one, I'll probably undo/undscrew it out of curiosity!

The mass-produced ones are most likely just a mask ROM - or possibly a PROM - plus some SRAM. I'm not sure how the EPROM ones were programmed, but I'm guessing it involved inserting them into a Wizard and connecting it to a PC via serial cable, which would be fine for small production runs by an ISV.