Peripheral 4 Setting Register
From SpecNext Wiki
| Number | TBRegisterNumber::$09 |
|---|---|
| Readable | TBRegisterReadable::Yes |
| Writable | TBRegisterWritable::Yes |
| Short Description | ShortDesc::Sets scanlines, disables Kempston and divMMC ports. |
| Bit | Function |
|---|---|
| 7-4 | Reserved, must be 0 |
| 3 | Disables Kempston port ($DF) if set |
| 2 | Disables divMMC ports ($E3, $E7, $EB) if set |
| 1-0 | scanlines configuration (0 after a PoR or Hard-reset):
%00 = scanlines off, %01 = scanlines 75%, %10 = scanlines 50%, %11 = scanlines 25% |