Thread: Zx81
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Old 25th Mar 2020, 6:44 pm   #185
SiriusHardware
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Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 8,628
Default Re: Zx81

Yes, in theory that approach can be used in conjunction with any computer with a row / column key matrix. I don't know if there isn't an upper limit on the number of characters one REM line can contain though.

Then again, if you first poke RAMTOP to be just above what is needed for the OS to minimally run, then you can poke the RAM beyond that address with whatever you like and jump to the start of it with a BASIC RANDOMIZE USR address... statement.

It might be quite fun to watch a ZX81 'type in' and then run ~16K worth of BASIC program. From memory though the longer the program is, the slower the screen update after each line entry, so the entry speed might have to scale slowly downwards. (You can tell I am actually thinking about doing this).
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