Unknown peripheral in Game Toshokan
Posted: Wed Sep 30, 2015 5:51 pm
Game Toshokan seems to support some unknown peripheral in port 3 besides the modem, although in practice it can't be used since the program will halt if it can't find a modem there. The relevant subroutines seem to be pretty much intact though.
I don't have much time to document this right now (nor do I really know what it does yet), but here are some notes in case somebody wants to keep researching:
$0053EE: detects what device is in port 3. It returns 0 if there's nothing supported, 1 for this unknown peripheral, 2 for the modem.
$00550A: reads a byte from the peripheral
$00555A: writes a byte into the peripheral
Will update this when I get more time, right now the laptop's battery is about to deplete =P
I don't have much time to document this right now (nor do I really know what it does yet), but here are some notes in case somebody wants to keep researching:
$0053EE: detects what device is in port 3. It returns 0 if there's nothing supported, 1 for this unknown peripheral, 2 for the modem.
$00550A: reads a byte from the peripheral
$00555A: writes a byte into the peripheral
Will update this when I get more time, right now the laptop's battery is about to deplete =P