* Port &F988 to read status 0 or select a page 0 register
* Port &F888 read/write to the selected page 0 register
* Port &???? F984 to read status 1 or select a page 1 register* Port &???? F884 read/write to the selected page 1 register
You can also use the CRTC cursor registers to program the raster interruption located at &0066. It works both on PlayCity and on Play2CPC.