Playchoice-10 custom instructions

– TO BE UPDATED SOON –

Custom INST-ROM is made using a homebrew game called Magic Floor (https://problemkaputt.de/magicflr.htm ).

You need the following:

 

Rename pck1-c.8t to PC10BIOS.ROM and place it in a sub-folder named BIOS

Edit the “MAGICPCH.A22” file with a texteditor (Notpad++ for example) and change the name or something, just to start with. Keep in mind the amount of characters have to remain the same.

Go to NO$NES emulator and do the following

  • Utility

  • Assemble

  • Open “MAGICPCH.A22”

  • The game will now start and you will see the custom instructions

 

Now you need to split MAGICPCH.NES file into multiple ROM files (https://wiki.nesdev.com/w/index.php/PC10_ROM-Images). I don’t really have a proper way of doing this, but a HEX editor like notepad++ will do the job. You need to cut the last 8192 bytes, then cut the last 32 bytes from that file.