31 Aug
2004
31 Aug
'04
10:45 a.m.
From: cswiger <cswiger(a)widomaker.com>
On Mon, 30 Aug 2004, Ed Chapel wrote:
Hi
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.
Dwight
Currently on eBay is an auction for a Poly 8810.
The seller shows pictures of the screen with random text garbage.
Anyone know if this is normal for these systems, if perhaps a boot disk is
Let me amend the last response - I'm ONLY speaking about the video
card, I know nothing about the Poly systems, if a ROM is supposed to
clear the display memory before hitting the disk or what ;) But
what is shown is good power, video memory and signal.
--Chuck
31 Aug
31 Aug
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
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