nesdev.org

Yup, that was it, thanks.

So what exactly does this mean? Are $2005/$2006 basically the same thing (writing to either of them both sets the PPU write address and the scroll)?

Trying out some NESDev for the first time (I'm familiar with the SNES and GB), having trouble getting going. My "Hello World" program - it just writes "HELLO" to the top left corner of the screen - isn't working. Nestopia/Nintendulator : nametables are correct, but only "ELL...

Hrm, I'm not sure I quite understand. Forgive me if I'm being thick, but Byuu sez: Different PCBs will change where RAM is mirrored Is that just a typo - did Byuu mean "Different PCBs will change where ROM is mirrored?" But then he also says: For one example, Ys 3 mirrors RAM to $70-7f:000...

So semi-related n00b question: how does what cartridge you have in the cart slot remap/mirror the RAM that's inside the system?

I know my software side of computer engineering pretty well - but what about the hardware side? Like, for instance, what sort of knowledge allows kevtris to build an FPGA NES? Or allows someone to figure out how to design a modchip? I don't even know what I don't know, and I don't know how to start ...

I wish I'd had a Genesis rather than an SNES as a kid. The 68k looks like a lovely processor to work with (much nicer than the 65816), but the Genny just doesn't speak to me the way Nintendo's console does.

I see. As I said, virtually any map builder doubles as a name table builder, because a map is just a generalization of a name table: what is a name table if not a map of a specific size with 1x1 metatiles and some hardware specific attributes? So I suspect you could very easily use Open tUME or Tile...

A "name table" on the NES is more generically called a "map", at least where I come from. What, in your mind, distinguishes a name table editor from a map editor? Certainly, any generic (2D tile-based) map editor worth its salt could support laying out 8x8 tiles and specifying at...

There are many map editors available that have customizable output, such as Tiled or Open tUME . You could use those to export data for whatever platform you need. You can also write your own map editor. Or write a program that analyses a BMP, where the colour of a pixel corresponds to the appropria...

Also the argument "who needs macros" just because you've written a new assembler that doesn't support them is... :roll: Funny, circumstantial argumenta ad hominem produce a similar response from me :) At any rate, the claim was never "who needs macros?"; it was always "I've...

Ah - I didn't document that, mea culpa. Yes, labels on the same line as instructions is implemented and works well.

In assembler, I see three primary uses for macros - MIPS-style pseudo-instructions or other small snippets of code; certain low-level speed-vs-size optimizations, such as loop unrolling or procedure inling; and to substitute for subroutines for reasons other than speed. More precisely, when I said t...

Not sure what you mean by "syntax compatible". My syntax for the standard ops adheres to what WDC lays out, which is as close to a standard as there is, as far as I know. If other assemblers deviate from it without cause, that's on their head. The only thing not specified by WDC are assemb...

Hey all, I had some free time and decided to write myself a 65816 assembler. If, for whatever reason, you're not satisfied with the excellent 65816 assemblers out there already, check it out on github . Any feature requests, bug reports, complaints or praises welcome. Cheers! The readme looks someth...

Honestly, I doubt any compiler is able to generate efficient enough code for anything beyond simple demos. The GBZ80 is a pretty lousy processor (much less powerful than a real Z80), and its design isn't exactly amenable to C's abstractions.