Could You share the firmware to take a look at? :}
On Sat, Jan 11, 2020 at 2:11 AM Rena <hyperhacker@gmail.com> wrote:
>
> I've been hacking one of these, and discovered a few references to Lua
> in the firmware. Specifically a couple debug messages mentioning Lua
> and what looks like a LUA_PATH string. However I can't find any actual
> Lua scripts/bytecode. Has anyone else looked into this?
>
> (FWIW, the company also goes by GeneralPlus, and makes the actual
> chipset; you're unlikely to find their name on the outside of the
> device, but lots of SP-prefixed things inside.)
>
> --
> Sent from my Game Boy.
>
I could if I knew where to upload a 4MB binary file.
I got into the UART and there is a "lua" command, but I couldn't get it to do anything. Giving it Lua code, filenames, gibberish, just no result at all. I suspect the Lua support is just an option that this particular firmware doesn't have.
These chips are also used in cheap/knockoff video games (notably the Vii), so maybe it works there?