On 7/16/06, Daniel Rozsnyó <[EMAIL PROTECTED]> wrote:

This is not needed to be in HW, because each register value is already
in video controller's program memory, so the application only needs to
modify those bits. The whole thing could be solved with maintaining a
table of offsets for the "registers" inside the program.

(it might depend on whenever the program memory can be modified per
instruction or only as a whole block - at least, the second allows us to
change more "registers" atomically;)

Yes, fortunately, there is no conflict.  We can write the registers
while the program is running.  If you have more than on instruction to
change, though, you'll get race conditions, and there may be problems
with an instruction executed too soon after it's loaded
(metastability).
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