nesdev.org

I haven't been following this thread closely, but it's not like us to call anyone a moron or anything of the kind. We're always willing to help those who demonstrate they're making progress. What nobody here likes is when we do our best to explain something to someone, taking time from other things...

I'm even willing to make a tutorial that's more comprehend-able than BunnyBoy if I understand everything. You'd be surprised by how many people have said that, but either "forgot" or just gave up on NES development. It's not easy to word this stuff in simpler terms, because this really is...

;;;;;;;;;;;;;; .bank 1 .org $FFFA ;first of the three vectors starts here .dw NMI ;when an NMI happens (once per frame if enabled) the ;processor will jump to the label NMI: .dw RESET ;when the processor first turns on or is reset, it will jump ;to the label RESET: .dw 0 ;external interrupt IRQ is ...

.bank 0 .org $C000 RESET: SEI ; disable IRQs CLD ; disable decimal mode LDX #$40 STX $4017 ; disable APU frame IRQ LDX #$FF TXS ; Set up stack INX ; now X = 0 STX $2000 ; disable NMI STX $2001 ; disable rendering STX $4010 ; disable DMC IRQs vblankwait1: ; First wait for vblank to make sure PPU is ...

Onto Night 3; This is going to be ridiculous because I may ask so many questions. I will try this one from background.asm in the Nerdy Nights Week 3. Remember - the only dumb question is the question that remains unasked. --- .inesprg 1 ; 1x 16KB PRG code .ineschr 1 ; 1x 8KB CHR data .inesmap 0 ; ma...

Ok, I'm still on Week 4 because I just got NES Classic Editions, and I'm loving it so much. The fact I got Mario Adventure from DahrkDaiz made me so happy, I didn't read any at all, just play play play. Right now, I'm burned out from playing it, and I'm worried if that will affect my concentrations...

Ok, I'm still on Week 4 because I just got NES Classic Editions, and I'm loving it so much. The fact I got Mario Adventure from DahrkDaiz made me so happy, I didn't read any at all, just play play play. Right now, I'm burned out from playing it, and I'm worried if that will affect my concentrations ...

Verrryyy much post and I'm confused easily, when I just want to know if I did the examples of A X Y register right. .enum $0000 ;declare names for variables starting at beginning of the zeropage (location $0000) BED .dsb 1 ;BED is now at location $0000 LAMP .dsb 1 ;LAMP is now at location $0001 .en...

Verrryyy much post and I'm confused easily, when I just want to know if I did the examples of A X Y register right.

But, what is the complete abilities or restrictions differs of A X Y [and other 2 registers?]

So judging by what I wrote, did it look alright by using A X Y register examples? Or I did the wrong way of examples of A X Y Register?

JOE = 10 ROB = 5 JUMP = JOE + ROB IF JOE == ROB GOTO @NAME In Assembly, JOE, ROB, and JUMP could be RAM address, and @NAME is a label that the assembler will give a value to at assembly time. (Omitting some assembly directives to make it easier) LDA #10 ;load A with 10 STA JOE ;store it to JOE LDA ...

Yeah, it can be hard to learn everything at once: 6502 assembly, the NES architecture, the iNES file format, game logic... If you're feeling overwhelmed, starting out with pure 6502 assembly like Banshaku suggested is a good alternative. When I first tried to learn 6502 assembly some 20 years ago I...

Thanks for PDF! But this is what I don't understand. Is it a separate engine, like the Address? Or is it a form of abilities like RAM or DATA styles? Like how does the register of A X Y [and P Z ] works? Or they work as a special form of variables like, a temporary placement of " A = X + Y&quo...

Is it a separate engine, like the Address? Or is it a form of abilities like RAM or DATA styles? Like how does the register of A X Y [and P Z ] works? Or they work as a special form of variables like, a temporary placement of " A = X + Y" until the new replacement happens like "STA&q...

Hmmm, well I'm on Week 3 right now, and I am still fuzzed about A X and Y on how does register works. I understood about Opcodes and Oprahand [like DIM / DEF and PRINT / GOTO stuff] but the register still puzzled me. Is it like a temporary data to hold the specific mathematics up to 3 times during ...