31 Aug
2004
31 Aug
'04
12:16 p.m.
It is possible that someone has grabbed a video card
out
of a Poly88 and stuck it in the Poly8810. This would require
changing the address select from D000H to 1800H of the video.
I believe ( as I reacll ) that the video is cleared right
at the first before the disk seek happens.
That makes sense. Poly graphics mode was fun - every character 077 and
below (octal) was a graphics character, with each bit mapping to a 3 tall
by two block wide unit, turning a, what, 24X32 display into 72X64 (?) block
display, with text and 'graphics' on screen at the same time. Anyway,
that's what those blocky white areas are that aren't alphanumeric generated
from the character ROM.
Here's a pic of mine just powered
up: http://www.widomaker.com/~cswiger/dscn1919.jpg
--Chuck
