Hold on, there's always a hope :°)
Using some nice (forgotten?) techniques, you can replace EGA/VGA ROM character sets with your own ones.
The easiest way is to use int10h Character generator function 11h and it's subfunctions.
Here is a small assembly snippet from one of my old programs. Assuming you use EGA/VGA textmodes :°), it will do what you need:
Well, I won't copy-paste the full character table here, if you're interested, check e.g. my sysinfo program (pressing TAB will change the fonts, just run it in pure DOS or full-screen window if run in a DOS box[/B]).
push bp // save registers
mov bp, offset fnt // set bp to point to your character table
mov es,bx // es points to the code segment
mov bh,16 // height oof each character
mov cx,100h // number of characters to redefine (256 - all!)
xor dx,dx // ASCII code of the first char to be redefined
xor bl,bl // font block to load
mov ax,1110h // function 11h subfunc. 10h
int 10h // video services
pop bp // restore registers
// the user defined font table -
// there are several freeware tools to create your own VGA fonts
fnt dw 9 dup (0)
db 7Eh, 81h,0A5h, 81h, 81h,0BDh
Source and binaries also available.
If you need more information about BIOS video functions, check Ralph Browns Interrupt List. Great work!