Sinclair ZX80 / ZX81 / Z88 Forums

Posted: **Wed Sep 16, 2020 2:40 pm**

Hi,
in the 8K ROM we have two subroutines used for string evaluation: Call 0F55 und Call 13F8
Can anybody tell me which equivalent subroutines are used with the 4K ROM ZX80-System?
Regards
Werner

Posted: **Wed Sep 16, 2020 5:49 pm**

I don't have the answer myself but a full ROM disassembly and other information can be found here.

https://k1.spdns.de/Vintage/Sinclair/80 ... ZX80/ROMs/

Sinclair ZX80 / ZX81 / Z88 Forums

ZX80 String Evaluation

ZX80 String Evaluation

Re: ZX80 String Evaluation