[Coco] Font editor for OS9/NitrOS-9 Level 2?
L. Curtis Boyle
curtisboyle at sasktel.net
Wed May 13 01:05:26 EDT 2015
The expanded fonts use characters 32-255 ($20-$FF). 0-31 are reserved for display codes for cursor control, etc. BASIC09 supports CHR$(x), and as Robert mentioned, it is easy to do in assembly language. I had made 2 fonts to go with it (IBM ANSI, and an ISO font to allow some special characters from web pages), but I didn't make a font editor to do the expanded character set. Can't remember if anybody else dead... Perhaps one of the current NitrOS9 coders knows?
I can't remember if DISPLAY supports characters >$7F... I thought it did, but I may be remembering that wrong.
Sent from my iPhone
> On May 12, 2015, at 8:13 PM, Robert Gault <robert.gault at att.net> wrote:
>
> L. Curtis Boyle wrote:
>> It was quite a bit lower in Level II, and I expanded it to 224 characters in NitrOS9, starting with version 2.0.
>>
>> Sent from my iPhone
>
> The LevelII manual contains in "Font Select Font", "The fonts are ordered with characters in the following ranges:
> $00-$1F International characters
> $20-$7F Standard ASCII characters
>
> There is no equivalent in OS-9 to the Basic PRINT CHR$(#). The closest is the command Display. On text screens, display shows values from $20-$7F. On graphics screens, display shows additional values from $BA-DA.
> You will have to look at the source code for display to tell if the range can be expanded.
>
> Maybe Curtis can say more about how to get additional characters onto the screen without an assembly language program.
>
> Robert
>
>
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