Gearboy VS pandocs

There were multiple times where I got stuck with the CPU timings and the PPU. So I modified the Gearboy to print some extra info, like registers and timers, so I could compare with mine and figure out where it failed.

I prefer Gearboy to Sameboy. It emulates the display flicker of a real Gameboy. Gave me a nostalgia kick.

Use https://gbdev.io/pandocs/ , https://gbdev.io/gb-opcodes/optables/ and https://github.com/gbdev/awesome-gbdev to get started.

Probably the most important one (the one I've used the most for reference) was the Game Boy Pandocs.

The pandocs are probably the most up to date documentation about the GameBoy in existence. It's a console which is still under active research - these days it's very focused on the extremely low level hardware behaviour.

The Pandocs are easy to read and contain pretty much everything you need to know to get a basic GB emulator up-and-running. The section on the Power-Up Sequence would answer this question for you and then some. You would've gotten the answer to your question yesterday if you looked at the Memory Map section, which tells you where ROM is mapped, and then some.

Does anyone know of good documentation beyond: - Pan Docs - The Cycle-Accurate Game Boy Docs - Complete Technical Reference - Nitty Gritty Gameboy Cycle Timing

For actual documentation, you probably know the pandocs, but there are a lot of more specific information in the docs linked in their references, especially the cycle-accurate GB docs, the GB complete technical reference by Gekkio. You can also check the source code of the relevant test roms, like the Blargg’s test roms for more general behaviour and the MooneyeGB test suite for more specific things.

For the Game Boy, being a closed system, there's fewer resources. Nintendo made a programming manual, but it's not very good. Pandocs is a good supplement: https://gbdev.io/pandocs/

There's an official programmer's guide from Nintendo that should technically have everything you need, but has some mistakes and doesn't explain everything in very much detail. Find it here. There's also a similar document that's community made. Still has some mistakes, but tries to explain some things and quirks a bit more clearly. (Find it here.)[https://gbdev.io/pandocs/] There's also tons of other similar documents and websites that display this information in an appealing manner such as the (CPU opcodes.)[https://meganesulli.com/generate-gb-opcodes/] You can find similar websites for the memory map, and even some wikis with this information.

Very cool article!

If you want to know more about the hardware side of the Game Boy (Color), have a look at the Pan Docs: https://gbdev.io/pandocs/

It's been revamped in the recent years, in terms of presentation. I do kind of miss the old version which had a refreshing "old-school" UI like the RFCs of the IETF, but the newest version is IMHO much more usable when developing an emulator.