On Aug 17, 2006, at 5:55 PM, James Newtons Massmind wrote:

>> replace the ST Video overlay chips that are used in
>> police cars everywhere. ST has dropped them. They have to
>> paint standard 8 x 10 pixel characters, 26 characters per
>> line, 12 lines. Only BOBIII can do it at the moment.
>
> 26 x 12 is 312 so you would need external RAM. The SX's
> have 262 bytes at most.

If I understand Bob's application, he doesn't need 312 characters,
he needs smaller numbers of characters in the corners of a video
screen, sized and placed in spots at the corners of the screen,
in spaces corresponding to the 26x12 matrix.

What about a chip/circuit that does that explicitly? 8x1 in each
of the four corners or similar?  Speed limitations are different
than memory limitations...  Or does it need to be a drop-in
replacement for the old ST part?

BillW
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