OPENIN opens a file for reading only. You need to use OPENUP if you want both to read from a file and write to it (and you'd better finish reading from it, or set its PTR#, before you write anything to it).
(In the first, very early version of BBC BASIC, there was no OPENUP; and OPENIN behaved the way OPENUP does on modern versions. If you load a modern program into an ancient machine, all OPENUPs in it will appear to have been changed to OPENIN.)
(In the first, very early version of BBC BASIC, there was no OPENUP; and OPENIN behaved the way OPENUP does on modern versions. If you load a modern program into an ancient machine, all OPENUPs in it will appear to have been changed to OPENIN.)
Statistics: Posted by julie_m — Wed Nov 13, 2024 11:39 am