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font.asm
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font.asm
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* vi:ts=8
*
****************
XDEF FontInit conout
INCLUDE 'gemdos.i'
INCLUDE 'bios.i'
INCLUDE 'xbios.i'
INCLUDE 'conout.i'
FONTSZ EQU 256*16
Section TEXT
ERROR: Pterm d0
FontInit:
Malloc #FONTSZ*16 reserveer geheugen voor font
tst.l d0 data en buffer
ble ERROR
move.l d0,FntData
Fopen #FntName,#0 lees font in buffer
tst.l d0
bmi 1$ geen font file
move.w d0,d6
move.l FntData,a0 buffer adres
Fread d6,#FONTSZ,a0
bmi ERROR
Fclose d6
tst.l d0
bmi ERROR
2$: bsr FontBuild
move.l #AllFnts,v_fnt_tab(a6)
move.w #0,v_fnt_typ(a6)
move.l FntData,v_fnt_ad(a6)
rts
1$: dc.w $a000 Systeem font naar '8086-format'
move.l 8(a1),a0
move.l $4c(a0),a0
move.l FntData,a1
move.w #255,d0
3$: move.b (a0),(a1)+
move.b $100(a0),(a1)+
move.b $200(a0),(a1)+
move.b $300(a0),(a1)+
move.b $400(a0),(a1)+
move.b $500(a0),(a1)+
move.b $600(a0),(a1)+
move.b $700(a0),(a1)+
move.b $800(a0),(a1)+
move.b $900(a0),(a1)+
move.b $a00(a0),(a1)+
move.b $b00(a0),(a1)+
move.b $c00(a0),(a1)+
move.b $d00(a0),(a1)+
move.b $e00(a0),(a1)+
move.b $f00(a0),(a1)+
addq.l #1,a0
dbra d0,3$
bra 2$
FontBuild:
move.w #15,d0 Make font tabel
lea AllFnts,a1
move.l FntData,a0
1$: move.l a0,(a1)+
lea FONTSZ(a0),a0
dbra d0,1$
lea AllFnts,a4
move.l (a4),a0 Reverse
move.l 4(a4),a1
bsr FontRV
move.l (a4),a0 Dubblestrike
move.l 8(a4),a1
bsr FontDS
move.l 8(a4),a0 Reverse
move.l 12(a4),a1
bsr FontRV
move.l (a4),a0 Underline
move.l 16(a4),a1
bsr FontUL
move.l 16(a4),a0 Reverse
move.l 20(a4),a1
bsr FontRV
move.l 16(a4),a0 Dubblestrike
move.l 24(a4),a1
bsr FontDS
move.l 24(a4),a0 Reverse
move.l 28(a4),a1
bsr FontRV
move.l (a4),a0 Dim
move.l 32(a4),a1
bsr FontDM
move.l 32(a4),a0 Reverse
move.l 36(a4),a1
bsr FontRV
move.l 8(a4),a0 Dubblestrike
move.l 40(a4),a1
bsr FontDM
move.l 40(a4),a0 Reverse
move.l 44(a4),a1
bsr FontRV
move.l 16(a4),a0 Underline
move.l 48(a4),a1
bsr FontDM
move.l 48(a4),a0 Reverse
move.l 52(a4),a1
bsr FontRV
move.l 24(a4),a0 Dubblestrike Underline
move.l 56(a4),a1
bsr FontDM
move.l 56(a4),a0 Reverse
move.l 60(a4),a1
bsr FontRV
rts
FontRV: move.w #FONTSZ-1,d0
1$: move.b (a0)+,(a1)
not.b (a1)+
dbra d0,1$
rts
FontUL: move.w #255,d0
lea ULCHAR*16(a0),a2
1$: move.w #15,d1
move.l a2,a3
2$: move.b (a0)+,(a1)
move.b (a3)+,d2
or.b d2,(a1)+
dbra d1,2$
dbra d0,1$
rts
FontDS: move.w #FONTSZ-1,d0
1$: move.b (a0),(a1)
move.b (a0)+,d1
lsr.b #1,d1
or.b d1,(a1)+
dbra d0,1$
rts
FontDM: move.w #255*8,d0
1$: move.b (a0)+,(a1)
and.b #%10101010,(a1)+
move.b (a0)+,(a1)
and.b #%01010101,(a1)+
dbra d0,1$
rts
****************
Section DATA
FntName dc.b '\default.f16',0
****************
Section BSS
FntData ds.l 1
AllFnts ds.l 16
END