|11||Cursor End Raster||xxx00000||0||Sets last raster row of character that cursor is on to invert
|-
|12||Display Start Address (High)||xx000000||48||On Amstrad Plus, bit7 of the printer port is controlled by bit3 of CRTC Reg. 12 R12 (ie. bit11 of Display Start Address)
|-
|13||Display Start Address (Low)||00000000||0||Allows you to offset the start of screen memory for hardware scrolling, and if using memory from address &0000 with the firmware.