https://itstillworks.com/12412891/how-to-link-visualboy-advance Maybe this will help, i remember back then i did this once.

@Chuck_B lol. There is a tad bit of slowdown, but nothing detrimental.

i found a pcb files for the gameboy advance that some one did a pi with it. after alot of struggle with no experience i managed to modify his pcb to fit my need. i take no credits lol i even left his name on the pcb i hope i did the modifications right , i have never used a circuit design program nor i know how to lol

@obsidianspider Thanks.... missed that word! Power boosters... There are ready setted boards available from adafruit or some other vendors

@mrbear2899 either bind the hotkey to the same button as fastforward, or disable hotkeys entirely.

Do you happen to have a laptop? Even an old one? EDIT: Doh! Necrothread!

well this pi zero will play some PS1 games with out bios they have lag as the zero isn't strong enuf for PS1 and n64 games but thanks fellas ill go digging up bios

before you all ask... 3 amp power supply (because contrary to Raspberry Pi's requirements 2.5 amps is not enough for anybody hence the lightning bolt in the corner for most people) 1200MHz overclock speed, and both heatsinks & fans cooling it.

@Yamt The only thing you need to watch out for with those ili9431 screens is the pcb overhang at the ends. If you measure the distance from the end of the screen to the start of the buttons, you will see what i mean. There are ways round this of course, you can unsolder the pins and use cables to free up some space, also the screen is attached to the PCB with 2 strips of tape. once these are detached, you can actually place the screen and PCB separately (although they are still attached by a ribbon cable). For the final trick, if unsolder the sd card socket, and carefully follow the lines on the PCB, you can actually chop away at least half of the board, making it easier to fit inside the case

@itsnitro yeah, sorry :(

@monstermadeofman Already bookmarked! I want to add X and Y buttons to it, but first my GBA needs to show up from Hawaii. I'm not averse to the custom PCB idea, but I really don't want to spend $80. What "other" custom PCB have you seen floating around? The only other one that I've come across is this one that I came across while browsing Reddit but I don't have any info on the maker.

Wow. That's INCREDIBLE! Sign me up - where do I get one?!