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.globl _amiga_aga_colour
.globl _amiga_aga_bw
.globl _antic_e_test
/*
D0 outer count & inner count
D1 colour
D2 Bits for bitplane 0
D3 Bits for bitplane 1
D4 Bits for bitplanes 2 & 3
D5 Bits for bitplane 4
D6 Bits for bitplane 5
D7 Bits for bitplane 6 & 7
A0 pointer to atari_screen
A1 pointer to bitmap 0
A2 pointer to bitmap 4
*/
_amiga_aga_colour:
moveml d0-d7/a0-a2,-(sp)
movel 48(sp),a0
movel 52(sp),a1
lea 46080(a1),a2
movew #5760-1,d0
aga_colour_outer:
swap d0
movew #15,d0
aga_colour_inner:
moveb (a0)+,d1
roxrw #1,d1 /* Bit for bitplane 0 */
roxlw #1,d2
roxrw #1,d1 /* Bit for bitplane 1 */
roxlw #1,d3
roxrw #1,d1 /* Bit for bitplane 2 */
roxlw #1,d4
swap d4
roxrw #1,d1 /* Bit for bitplane 3 */
roxlw #1,d4
swap d4
roxrw #1,d1 /* Bit for bitplane 4 */
roxlw #1,d5
roxrw #1,d1 /* Bit for bitplane 5 */
roxlw #1,d6
roxrw #1,d1 /* Bit for bitplane 6 */
roxlw #1,d7
swap d7
roxrw #1,d1 /* Bit for bitplane 7 */
roxlw #1,d7
swap d7
dbra d0,aga_colour_inner
movew d3,11520(a1)
movew d4,23040(a1)
swap d4
movew d4,34560(a1)
movew d2,(a1)+
movew d6,11520(a2)
movew d7,23040(a2)
swap d7
movew d7,34560(a2)
movew d5,(a2)+
swap d0
dbra d0,aga_colour_outer
moveml (sp)+,d0-d7/a0-a2
rts
/*
D0 outer count & inner count
D1 colour
D2 Bits for bitplane 0
D3 Bits for bitplane 1
D4 Bits for bitplanes 2
D5 Bits for bitplane 3
A0 pointer to atari_screen
A1 pointer to bitmap 0
A2 pointer to bitmap 4
*/
_amiga_aga_bw:
moveml d0-d7/a0-a2,-(sp)
movel 48(sp),a0
movel 52(sp),a1
lea 46080(a1),a2
movew #5760-1,d0
aga_bw_outer:
swap d0
movew #15,d0
aga_bw_inner:
moveb (a0)+,d1
roxrw #1,d1 /* Bit for bitplane 0 */
roxlw #1,d2
roxrw #1,d1 /* Bit for bitplane 1 */
roxlw #1,d3
roxrw #1,d1 /* Bit for bitplane 2 */
roxlw #1,d4
roxrw #1,d1 /* Bit for bitplane 3 */
roxlw #1,d5
dbra d0,aga_bw_inner
movew d3,11520(a1)
movew d4,23040(a1)
movew d5,34560(a1)
movew d2,(a1)+
clrw 11520(a2)
clrw 23040(a2)
clrw 34560(a2)
clrw (a2)+
swap d0
dbra d0,aga_bw_outer
moveml (sp)+,d0-d7/a0-a2
rts
_antic_e_test:
moveml d0-d2/a0-a1,-(sp)
movel 24(sp),d0
movel 28(sp),a0
movel 32(sp),a1
antic_e_loop:
moveb (a0)+,d1
beq antic_e_blank
rorw #6,d1
andb #3,d1
moveb d1,(a1)+
moveb d1,(a1)+
rolw #2,d1
andb #3,d1
moveb d1,(a1)+
moveb d1,(a1)+
rolw #2,d1
andb #3,d1
moveb d1,(a1)+
moveb d1,(a1)+
rolw #2,d1
andb #3,d1
moveb d1,(a1)+
moveb d1,(a1)+
dbra d0,antic_e_loop
moveml (sp)+,d0-d2/a0-a1
rts
antic_e_blank:
clrl (a1)+
clrl (a1)+
dbra d0,antic_e_loop
moveml (sp)+,d0-d2/a0-a1
rts
|
