Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Screen fonts in SCREEN 0
#12
[Image: 64X16.png] its very easy in qb64 to change the bios fonts.... redifined my own ascii.... 100% possible. screen 0 set for 64,16 with 16cols just like vintage computers.


(05-07-2024, 04:41 PM)TerryRitchie Wrote:
(05-07-2024, 02:57 PM)BDS107 Wrote: In the MS-DOS days of Norton Utilities, PC-Tools, etc., you would see programs redrawing their ASCII characters to get different boxes and characters.
We can easily create font files via the VGA Font Editor (see https://github.com/a740g/VGA-Font-Editor).
But how do we get this on the screen via SCREEN 0? No not SCREEN 13 or so.
I used to write an assembler program for that, but I've lost it, years ago....
Yeah, that was cool how Norton and others did this. This was done by creating a new ASCII set in RAM and then hooking the BIOS call to that new section of RAM instead of grabbing the character from ROM. That is why the assembler program was needed, it would perform the redirection. This is not going to be possible with QB64 (as far as I know, the developers here are rather clever).

You'll need to create your own font file (.ttf) and then use the method Steve pointed out above.

[Image: Screenshot-from-2025-07-07-23-12-34.png]still working on it. 255 ascii chars.screen 0... qb64
Reply


Messages In This Thread
Screen fonts in SCREEN 0 - by BDS107 - 05-07-2024, 02:57 PM
RE: Screen fonts in SCREEN 0 - by SMcNeill - 05-07-2024, 03:16 PM
RE: Screen fonts in SCREEN 0 - by TerryRitchie - 05-07-2024, 04:41 PM
RE: Screen fonts in SCREEN 0 - by pmackay - 07-07-2025, 01:41 PM
RE: Screen fonts in SCREEN 0 - by bplus - 05-07-2024, 08:29 PM
RE: Screen fonts in SCREEN 0 - by a740g - 05-07-2024, 10:58 PM
RE: Screen fonts in SCREEN 0 - by TerryRitchie - 05-08-2024, 01:32 AM
RE: Screen fonts in SCREEN 0 - by a740g - 05-08-2024, 03:43 AM
RE: Screen fonts in SCREEN 0 - by bplus - 05-08-2024, 01:39 AM
RE: Screen fonts in SCREEN 0 - by SMcNeill - 05-08-2024, 02:41 AM
RE: Screen fonts in SCREEN 0 - by bplus - 05-08-2024, 09:37 AM
RE: Screen fonts in SCREEN 0 - by BDS107 - 05-08-2024, 01:58 PM
RE: Screen fonts in SCREEN 0 - by pmackay - 07-07-2025, 01:59 PM
RE: Screen fonts in SCREEN 0 - by pmackay - 07-07-2025, 02:10 PM
RE: Screen fonts in SCREEN 0 - by madscijr - 07-08-2025, 08:05 PM

Possibly Related Threads…
Thread Author Replies Views Last Post
  Tool for testing SCREEN viewport (Lububtu's bug) TempodiBasic 8 796 11-27-2025, 12:54 AM
Last Post: TempodiBasic
  Marquee Utility / Demo for Screen 0 Pete 3 626 09-18-2025, 12:42 AM
Last Post: Pete
  Small full screen editor eoredson 14 4,005 06-14-2025, 03:38 AM
Last Post: eoredson
  Prg to create color variables (screen 0) Abazek 4 1,148 03-03-2025, 06:26 AM
Last Post: Abazek
  A scrolling SUB for text in SCREEN 0 TempodiBasic 1 662 12-10-2024, 01:04 AM
Last Post: TempodiBasic

Forum Jump:


Users browsing this thread: 1 Guest(s)