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 <will.s...@gmail.com> 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 > > >