First, a comment, then I will get to the cause of your problem.

The SBC instruction uses the carry flag to indicate whether there is a borrow from a previous subtraction; carry set means no borrow.

Usually, you will see the sequence


sec
sbc


It was not a problem in your case because the ...

Thank you all so much so far! Since I'm really new in programming in general and in assembly language especially, I tried to take any hint very serious.

Thanks to @barrm95838, I started to read quite a bit on all addressing modes for the 65C02 and especially on indirect addressing, memory ...

Hello,

how can I read out vast amount of texts (hundreds of lines) and display them on a 20x4 display?
What I did so far is reading up to 256 characters from the space indicated with .BYTE or .ASCIIZ and displaying it, even with scrolling the lines from bottom to top on the 20x4.
Now I want to ...

Thanks, GARTHWILSON! What assemblers did you use that gave you this kind of listings?

EDITED: Ok, saw them now on your page.

Thanks a lot! The -L command works! The others give me an error message, think I need to play around a bit.
The format of the listing (see attached image) is fixed I assume, isn't it? So, I can't just put the assembly code to the right hand side of the hex code, correct?

Thank you, BigEd, that was helpful!
So, I assume that the assembler is creating some kind of these listings?
I use vasm for assembling my programs written assembly. Any help on how getting these listings out of there or any other assembler that works in command line on a Mac?

Good morning,

how do I create these listings (whats the right terminology?) that seem to derive from disassembly processes and that contain (from left to right):

- line number,
- memory location (or programme counter?),
- hex code,
- assembly language programme,
- comments?

(see example ...