Skip to content

Unused IO Registers

Jump to bottom
Optix edited this page Jan 31, 2021 · 1 revision

Metadata

Source File: /src/tests/unused_io.asm
Compatible with: All models

Description

This test checks if reading from unused IO registers returns the expected $FF value. If runnning on DMG or MGB, CGB-exclusive registers are also checked.

Error Messages

  • $FFXX not $FF - Reading from the register $FFXX (where XX can be any value between $00 and $FF) returned a value that is not $FF as expected

Clone this wiki locally