Need references/documentation for "AT&T 640 x 400" graphics mode

[William Anderson]

I recently acquired a Sharp MZ-200 laptop (a really nice low-cost XT clone,
BTW) which claims to have an "AT&T 640 x 400" graphics compatibility mode.
I would like a pointer to documentation on this hardware, and (specifically)
if there is any interesting software which can take advantage of this display.

Please respond to wca at coralsea.sps.motorola.com if possible.  I'll summarize
if there is sufficient interest.

-- 
William Anderson - Motorola M&MTG, Austin, TX
"Memories....you're talking about memories!" - Deckard