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:
Magic Floor assembler source code (https://problemkaputt.de/magicnes.zip)
NO$NES emulator (https://problemkaputt.de/no$nes-w.zip )
PC-10 dual monitor bios
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
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.