ChibiAkumas ASM Programming Forum

The SMS/GG has two 16 color palettes. The background can use palette 0 or palette 1, but sprites always use Palette 1 You've only defined palette 0 - so the sprites are black Double the entries in PaletteData (copy the existing 16 entries a second time for starters) Change "ld b,16 ;Byte count ...

Double byte Write.

I believe i based the table on the information in this document:
https://patpend.net/technical/snes/snes.txt

Yes, that's what I'd recommend you use.

Your 'V' text is in the same part as the program as your code. The Z80 is trying to run it, and it's causing a crash. You need to put it somewhere the CPU will never run - for example after the HALT. Oh, the tabs were a bit messed up in the code comment, but that may just be a copy-paste issue. Reme...

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I did a quick google search and couldn't find any existing disassembled sources of Metal Slug You could try and do one yourself with a program like cutter: https://cutter.re/ I would warn you though, in my opinion / experience disassembling something is harder than writing it, what I'm saying is if ...

The set commands here do not affect the contents of the VRAM directly, only the contents of the register, it's the 'Ld (hl), e' command which is altering VRAM. HL is the pointer to the VRAM address, made up of the H L pair - The set command (along with the ADC) is being used to alter the VRAM destin...

Yes, You should do either of those things! To my knowledge, most systems don't have an 'off function' for hardware sprites. I think setting the sprite to an offscreen Y position will be best, as most systems have a smallish horizontal sprite limit of 8 or so sprites (even if the hardware is capable ...

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I don 't think you have any choice but to do it with software.

I'm not aware that the PC Engine can do any kind of transparency or other 'calculated' effects like Xor