http://skilldrick.github.io/easy6502/
My sister is going to try to learn nes assembly from this... it is quite a site... there is a javascrpit 6502 emulatior that the guy made for his ebook. IT ROCKS!! I went through the first part of his teaching up to his branching section... it's written very well by a guy who wants to help others to understand 6502. The nes uses a 2A03, but I think it is a general 6502 chip... with no decimal mode. Oh and it has an apu (audio processing unit) that is a part of its 2A03, I think...
Well, ok this site could help someone to learn 6502; the only problem I had was misunderstanding his code
I didn't notice that he loaded the accumulator with #$80 and so then when he added #$80 to the accumulator I wasn't bright enough to figure out the answer... a #$00 with the carry set... which you can see on his javascript 6502 program ... what do yall think of it?
edit: easy6502's 6502 emulator is really sweet for learning 6502... but it doesn't use the NES's PPU. So just understand that before you start learning from this guy's sweet site.
edit2.
My sister is going to try to learn nes assembly from this... it is quite a site... there is a javascrpit 6502 emulatior that the guy made for his ebook. IT ROCKS!! I went through the first part of his teaching up to his branching section... it's written very well by a guy who wants to help others to understand 6502. The nes uses a 2A03, but I think it is a general 6502 chip... with no decimal mode. Oh and it has an apu (audio processing unit) that is a part of its 2A03, I think...
Well, ok this site could help someone to learn 6502; the only problem I had was misunderstanding his code
Code:
LDA #$80
STA $01
ADC $01
STA $01
ADC $01
I didn't notice that he loaded the accumulator with #$80 and so then when he added #$80 to the accumulator I wasn't bright enough to figure out the answer... a #$00 with the carry set... which you can see on his javascript 6502 program ... what do yall think of it?
edit: easy6502's 6502 emulator is really sweet for learning 6502... but it doesn't use the NES's PPU. So just understand that before you start learning from this guy's sweet site.
edit2.