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Hello people, I am following the Nerdy Nights tutorials, basic sections, and trying to modify some code in order to get a better understanding. Sadly, I am stuck with an example and I don't manage to see the mistake by my own. The exercise is in principle very simple: 1) set the background to green ...

In the Nerdy Nights tutorial, the CPU RAM is usually cleared after the RESET operation. Code: CLRMEM: lda #$00 sta $0000, x sta $0100, x sta $0300, x sta $0400, x sta $0500, x sta $0600, x sta $0700, x lda #$FE sta $0200, x inx bne CLRMEM rts My question is: why do we assign the value #$FE to the ra...

Thank you

While reading multiple sources, I often find the terms "setting / clearing" a bit. Now, I am not a native speaker, plus my experience with low-level programming is zero. We also say "the devil is in the detail", therefore...I honestly prefer to ask :mrgreen: I think that: - set a bit = put its value...

Very good to know, thanks.
To be sure, I will always be careful of not exceeding the 8KB dimension.

Fantastic, wonderful explanation!
Yes, and so this problem has been solved, too. Thank you very much

Ohhh, great! Crystal clear and complete explanation: thank a lot!

Thank you for the explanation. If I may, I'd like to ask for a couple of clarifications more. Each bank has a maximum capacity of 8 KB. But, how precisely is this value "filled"? Do code instructions occupy memory in the bank? In other words, if I understood correctly, the code itself is structured ...

According to the Nerdy Nights basic guide, an introductory way for loading the Palettes is with a simple loop: ;; Tell the PPU to write from $3F00 on lda #$3F sta $2006 lda #$00 sta $2006 ;; Palette loading ldx #$00 LoadPalette: lda PaletteData, x sta $2007 inx cpx #$20 bne LoadPalette Where "Palett...

I am studying the NN basic tutorials and, despite a basic fair understanding, I'd like to go e little bit more into details. Let's consider the following general code: .inesprg 1 .ineschr 1 .inesmap 0 .inesmir 1 .bank 0 .org $C000 ; do something Forever: JMP Forever .bank 1 .org $FFFA ; set the nes ...

Hello, and thanks for the help. I managed to find a digital copy of the Leventhal's book, which indeed seems very well written and is also available on ebay for an OK price. I understand that you use it as a reference, but, anyway, do you think that reading it from cover to end might be a good idea?...

Thanks, man!

Hello people, I have a simple reference question :beer: It seems that the only book currently available at a reasonable price is "Programming the 65816 including the 6502, 65C02, and 65802". Does anybody have a direct experience with it? Might it be useful to systematically learn the 6502 asm, or is...

Thank you very much for the clarifications: for having pointed out the most relevant Wiki sections, as well as for the news concerning the website. I am re-reading the first Chapters of the Nerdy Nights tutorial, and I have to admit to be very satisfied. At the beginning they seemed more obscure, bu...

Thank you for you answers! I am happy to hear your comments, and I think I'll post some more precise questions soon. Beyond that, I don't manage to access the suggested links from user "nocash". In my web browser I read the message: You don't have permission to access this resource.Server unable to ...