Changes
/* I/O Port Address */
The recommended I/O address (used in the CPC example source code) is Port F8F0h (ie. shorten Link 1 on the [[Maplins 8bit Input Port]]).
Bit7 Dotclock (probably derived from E.O.C.) (end of ADC conversion)
Bit6 Sync (used as hsync) (the sample program doesn't seem to do any vsync handling?)
Bit5-4 Unknown/unused
Bit3-0 Luminance
The decoder outputs some control signals and an 8bit luminance signal. That data can't be squeezed through the 8bit input port, so some of the luminance bits are left unconnected (the CPC's color palette couldn't display them anyways).
