Worked like a charm on my newly arrived M100. Sheesh, this thing is a
beast! Serial number shows 302003672. If I'm understanding it correctly,
this means 1983, February, machine number 3672 of the batch. Wow, that's
a while back (I was 17). I tore it down and put it all back together
again. Other than dust and grime and a missing little plastic thing that
catches the rocker arm of the space bar (I swapped the bottom one from
the enter key and all's well there), it's pristine. I cleaned and blew
and lo and behold everything is working beautifully. And it looks oh so
familiar. The polarizer is a little rainbowy in a certain light at one
spot, but hey, don't notice it in normal light. Yay! Off to programming
the banner and figuring out how to get it to talk over null modem to my
Mac Pro running Monterey and minicom :).
Thanks for the assist.
Will
On 9/25/22 2:49 PM, Mike Stein wrote:
30481, 7711H - Start of LCD character generator shape table. Five
bytes per char for
the first 128 characters. 6 bytes per char for characters
128-255.
On Sun, Sep 25, 2022 at 1:55 PM Will Senn <[email protected]> wrote:
All,
This is my first post, but hopefully not my last.
I originally had an M100 in 1984 that I hocked for $50 bucks at a
local pawn shop for food money in my freshman year. I never went
back (I didn't get the $50 plus interest for ages). Now, it's 38
years later and I'm finally getting it out of hock (so to speak).
I remember writing a basic program that read the character bitmaps
out of ROM (at least that's how I remember it) and used the bitmap
as a basis for a banner in the same font. I think I'd like my
first program on my new/old M100 to be a banner program and so I'm
digging around looking for where, in ROM, the character bitmaps
are stored. I've looked here, there, and everywhere to no avail.
Is there a set of bitmaps stored in ROM, and if so where?
If I remember correctly, each character was represented as a set
of 8 (maybe 7) 6 (maybe 5) bit binary numbers:
001000
010100
100010
100010
111110
100010
100010
000000
or somesuch for A...
resulting in something like:
1
1 1
1 1
1 1
11111
1 1
1 1
being displayed. The zeros on the bottom and right may be on the
top or left, or not there at all, but there are spaces between and
below characters, either in the bitmap or added by the display
functions.
Thanks!
Will
