* The handbook and schematic say the CRTC is a CM 607.
* The CRTC used on a real KC Compact is a HD6845P.
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* The CIO clocks for each mode (0,1 and 2) are derived from the main 16Mhz clock, these then drive the shift registers to output pixels to the display.*could* be used Mode 3 is hardwired to re-program 5V, so it doesn't have a clock. The shift registers are stopped and output the resolutionlast colour they clocked in. (see CIO description below)
== Colour-ROM ==