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Diffstat (limited to 'contrib/syslinux/syslinux-4.03/core/font.inc')
| -rw-r--r-- | contrib/syslinux/syslinux-4.03/core/font.inc | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/contrib/syslinux/syslinux-4.03/core/font.inc b/contrib/syslinux/syslinux-4.03/core/font.inc deleted file mode 100644 index 1223635..0000000 --- a/contrib/syslinux/syslinux-4.03/core/font.inc +++ /dev/null @@ -1,152 +0,0 @@ -;; ----------------------------------------------------------------------- -;; -;; Copyright 1994-2008 H. Peter Anvin - All Rights Reserved -;; -;; This program is free software; you can redistribute it and/or modify -;; it under the terms of the GNU General Public License as published by -;; the Free Software Foundation, Inc., 53 Temple Place Ste 330, -;; Boston MA 02111-1307, USA; either version 2 of the License, or -;; (at your option) any later version; incorporated herein by reference. -;; -;; ----------------------------------------------------------------------- - -;; -;; font.inc -;; -;; VGA font handling code -;; - - section .text16 - -; -; loadfont: Load a .psf font file and install it onto the VGA console -; (if we're not on a VGA screen then ignore.) -; The font is on top of the getc stack. -; -loadfont.err: jmp close ; Tailcall the close routine - -loadfont: - mov di,trackbuf - mov cx,4 - call readc ; Read header - jc .err - - mov ax,[trackbuf] ; Magic number - cmp ax,0436h - jne .err - - mov al,[trackbuf+2] ; File mode - cmp al,5 ; Font modes 0-5 supported - ja .err - - xor bx,bx - mov bh,[trackbuf+3] ; Height of font - cmp bh,2 ; VGA minimum - jb .err - cmp bh,32 ; VGA maximum - ja .err - - ; Load the actual font - mov di,trackbuf - mov cx,bx ; Bytes = font height * 256 - call readc - jc .err - - call close - - ; Copy to font buffer - mov si,trackbuf ; Start of font data - mov [VGAFontSize],bh - push es - mov cx,aux_seg - mov es,cx - mov di,aux.fontbuf - mov cx,bx - shr cx,2 - rep movsd - pop es - - mov [UserFont], byte 1 ; Set font flag - -; -; use_font: -; This routine activates whatever font happens to be in the -; vgafontbuf, and updates the adjust_screen data. -; Must be called with CS = DS -; -use_font: - test byte [UsingVGA], ~03h ; Nonstandard mode? - jz .modeok - call vgaclearmode - -.modeok: - test [UserFont], byte 1 ; Are we using a user-specified font? - jz adjust_screen ; If not, just do the normal stuff - - push es - mov bp,aux_seg - mov es,bp - - mov bp,aux.fontbuf ; ES:BP -> font - mov bh,[VGAFontSize] - xor bl,bl ; Needed by both INT 10h calls - - test byte [UsingVGA], 01h ; Are we in graphics mode? - jz .text - -.graphics: - xor cx,cx - mov cl,bh ; CX = bytes/character - mov ax,[GXPixRows] - div cl ; Compute char rows per screen - mov dl,al - dec ax - mov [VidRows],al - mov ax,1121h ; Set user character table - int 10h - mov ax,[GXPixCols] - shr ax,3 ; 8 pixels/character - dec ax - mov [VidCols],al - pop es - ret ; No need to call adjust_screen - -.text: - mov cx,256 - xor dx,dx - mov ax,1110h - int 10h ; Load into VGA RAM - pop es - - xor bl,bl - mov ax,1103h ; Select page 0 - int 10h - -; -; adjust_screen: Set the internal variables associated with the screen size. -; This is a subroutine in case we're loading a custom font. -; -adjust_screen: - pusha - mov al,[BIOS_vidrows] - and al,al - jnz vidrows_ok - mov al,24 ; No vidrows in BIOS, assume 25 - ; (Remember: vidrows == rows-1) -vidrows_ok: mov [VidRows],al - mov ah,0fh - int 10h ; Read video state - dec ah ; Store count-1 (same as rows) - mov [VidCols],ah - popa - ret - - section .data16 - alignz 2 -VGAFontSize dw 16 ; Defaults to 16 byte font -UserFont db 0 ; Using a user-specified font - - section .bss16 - alignb 4 -GXPixCols resw 1 ; Graphics mode pixel columns -GXPixRows resw 1 ; Graphics mode pixel rows |