> Really
> what I want is a function that would
> convert the value of a register into say, hex or base 10 ascii text,
> and then count the number of
> rows/columns of video coming in, and insert black or white pixels into
> the video stream as appropriate to make those characters appear
> (superimposed) on the output video stream.

Yeah. I might be able to help although I don't know what you are
using. Xilinx? Spartans? Virtex? VHDL? Verilog?

Can we assume that you already have a VGA display that is outputting?
And so can we assume that you have row and column registers in your
design?

Brad Smallridge
AiVision dot com