Memory Left

Frequently Asked Questions about the Sinclair ZX81
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Bill H
Posts: 155
Joined: Sat Nov 27, 2010 6:05 pm

Memory Left

Post by Bill H »

Can anyone tell me what combination of peeks will tell me how much memory I have left while writing a Basic program? I believe it would be STKBOT - E_LINE

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PRINT ((PEEK(16410)*256) + PEEK(16411)) - ((PEEK(16404)*256) + PEEK(16405))
but am not sure.

Bill H
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PokeMon
Posts: 2225
Joined: Sat Sep 17, 2011 6:48 pm

Re: Memory Left

Post by PokeMon »

It should be ERR_SP-STK_END-machine_stack.
Maybe calculate 100 Byte for machine stack to be on the safe site.
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