_cpct_mode_rom_status:: .db #0x9D
8-bit space for storing the latest selection of MODE, INT.GENERATOR and ROM status. This lets us know if Lower / Upper ROM are enabled or disabled, if interrupts are enabled or not, and which Video Mode is actually set.
[ GGGIRRnn ]
| GGG | Command for video mode and ROM selection (100) |
| I | Interrupt Generation Enabled (1) |
| RR | Reading from Lower and Upper ROM Disabled (11) (a 0 value means ROM enabled) |
| nn | Video Mode 1 (01) |
Default value: 0x9C = (10011100)