OSBYTE &EF
OSBYTE &EF (239) - Read/Write shadow state
This location is used by OsByte 111 and 114. The value 0 indicates no shadow screen or shadow screen not selected 1 indicates Electron Master RAM Turbo mode 128 indicates Electron Master RAM 64K mode
See Also
Jgharston 23:12, 26 May 2009 (UTC)