OSBYTE &9A

OSBYTE &9A (154) - Write to Video ULA control register and RAM copy

   This call places X into register 0 of the 6845, and updates the RAM copy
   (Electron OS only)
   Reset flashing colours
   This call forces the ULA to set any flashing colours back to the first of
   the two (the 'mark' colour)

See Also

• http://mdfs.net/Docs/Comp/BBC/Osbyte80

Jgharston 22:10, 26 May 2009 (UTC)