bios font

Programming, for all ages and all languages.
Post Reply
User avatar
Philip
Member
Member
Posts: 59
Joined: Thu Mar 06, 2008 11:37 pm
Location: Singapore

bios font

Post by Philip »

anybody knows where the bios font located in rom? :?
Paw
Member
Member
Posts: 34
Joined: Fri Mar 07, 2008 11:20 am

Post by Paw »

You need to invoke an interrupt for retrieving a pointer to the font's location:
http://lrs.uni-passau.de/support/doc/in ... B-0142.HTM
User avatar
Dex
Member
Member
Posts: 1444
Joined: Fri Jan 27, 2006 12:00 am
Contact:

Post by Dex »

You can also re-program it to use other fonts, this way you can use the unused fonts, to make a logo for your OS, see below.
I have a demo some where.
Attachments
See the V2OS at top of this image
See the V2OS at top of this image
demo.jpg (12.52 KiB) Viewed 3599 times
User avatar
Philip
Member
Member
Posts: 59
Joined: Thu Mar 06, 2008 11:37 pm
Location: Singapore

Post by Philip »

i decided to build my own font 8x16
quite tiring but only 256 records, so can take it
Shark8
Member
Member
Posts: 27
Joined: Wed Nov 02, 2005 12:00 am

On fonts...

Post by Shark8 »

Philip wrote:i decided to build my own font 8x16
quite tiring but only 256 records, so can take it
I once built my own 4x4 font. (For working in basic VGA mode... or was it CGA?)

Anyway, it was bulky, blocky and sometimes hard to read... but it worked.
User avatar
Combuster
Member
Member
Posts: 9301
Joined: Wed Oct 18, 2006 3:45 am
Libera.chat IRC: [com]buster
Location: On the balcony, where I can actually keep 1½m distance
Contact:

Re: bios font

Post by Combuster »

Philip wrote:anybody knows where the bios font located in rom? :?
Its in video memory as well - With a small bit of VGA trickery you can get it out.
"Certainly avoid yourself. He is a newbie and might not realize it. You'll hate his code deeply a few years down the road." - Sortie
[ My OS ] [ VDisk/SFS ]
1234
Posts: 24
Joined: Sat May 26, 2007 7:58 pm

Post by 1234 »

[post deleted]
Last edited by 1234 on Tue Jan 27, 2009 3:22 pm, edited 2 times in total.
1234
Posts: 24
Joined: Sat May 26, 2007 7:58 pm

Post by 1234 »

[post deleted]
Post Reply