The introduction to Atari 2600 BankSwitching you never asked for

[Windless]

Hi,

 

  I started using bank switching (for some precalculated self-modifying code - don't judge me) and though the principle is really simple (put the proper address on the address bus and voila), trying to do everything from scratch with just this information did not work first try for me.

 

  After I managed to make it work, I of course found that all the information was already available on this forum, but you needed to find and read the proper thread to pick what you needed.

 

  I then started to write a synthetic introduction... which (though still unfinished) is no longer synthetic at all but contains all the information I wished I had in the order I think it would have been the easier for me to learn them.

 

  Maybe it could be of some interest to someone else.

 

https://gitlab.com/FTregan/bank-switching-rom-atari-2600/-/blob/master/README.md

 

[Dionoid]

Your explanation of ORG and RORG is really good!
The code example below 'Making use of the extra ROM' was a bit unclear to me (like the purpose of 'inc $80'). I think a real example would probably work better here.

[Windless]

Thanks

 

Good point, I need to improve this. I do need to either put some real code (and explain it) or just remove it and comment "put some code here"