Wow, well thank you very much George. It did not even remotely occur to me that this problem would have shown up in the model 1 ROM.
So this code snippet tracks back to an original Microsoft BASIC that must have been written for 8080; the Model 1 pre-dates the Model 100. very cool! This is a hek of a lot better than my crude 39 byte replacement patch! Do you mind if I post your answer on the VCFED forum thread I started on this subject? On Thu, Dec 19, 2024 at 3:33 AM George Phillips <[email protected]> wrote: > And just after hitting send I realize the Z-80 version can be one byte > shorter still: > LD A,($40AF) SUB 3 CP 8-3 JR NC,_25E5 OR A SCF RET _25E5: OR A RET -- > George >
