[Having to learn Machine Language in my own unique way]

These two documents are very useful for learning the 6502 opcodes:

• http://nesdev.parodius.com/6502guid.txt
• http://www.qotile.net/minidig/docs/6502.txt

 

Thank you so much! I just printed both of those off so I could have it as a manual reference in front of me!

[Having to learn Machine Language in my own unique way]

lda #10 ; a = 10tax ; x = 10 (Transfer A to X)inx ; x = 11txa ; a = 11 (Transfer X to A) you can also change values in RAM w/out having to load them into a register:inc $80 (value in location $0080 just increased by 1)dec $81 (value in location $0081 just decrease by 1)

 

Thank you Spiceware! I need to find and print off a document that has all the opcodes that the 2600 has. Opcodes is the correct term right?

[Having to learn Machine Language in my own unique way]

Unfortunately, 'INA' and 'DEA' are not 6502 instructions.

 

So you would have to first store the value of A into X or Y, call dex/dey or inx, iny and then load the value of X back into A correct? How would that look in Machine Language?

[run humanoid run]

I have to agree with Dave, slower is the way to go. Does the speech not work anymore?

[Back to Seaweed Assault]

Great to hear, I hope we can use an updated binary sometime soon!

[Harmony Memory]

Thanks for the technical writeup!! It helps to give you a perspective of what it took to get this to work. I think what I find the best is who ever thought the Atari 2600, a console from 1977, would have an SD port ! Great job guys!

 

-Disjaukifa