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Copy pathDCPTI_B2.S
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DCPTI_B2.S
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;---------------------------------------------------------------
;
; dcpti 15/01/91
;
; decompactage
;
; a0 adresse fichier
; a1 adresse ecran
; la taille de l'image decompactee doit etre un multiple de 32 octets
;
dcpti::
moveq.l #0,d1
moveq.l #0,d2
move.w (a0)+,d0 ;taille fichier decompacte
addi.w #31,d0
lsr.w #5,d0 ;/32
move.w (a0)+,d1 ;taille 1ere passe
move.w (a0)+,d2 ;taille 2eme passe
movea.l a0,a2 ;[a2] pointe sur zone 1ere passe
movea.l a0,a3
adda.l d1,a3 ;[a3] pointe sur zone 2eme passe
movea.l a3,a4
adda.l d2,a4 ;[a4] pointe sur donnees
subq.w #1,d0
move.l (a2)+,d4 ;1ere zone
move.l (a3)+,d5 ;2eme zone
moveq.l #31,d3 ;[d3] no bit dans long mot
moveq.l #0,d6
moveq.l #-1,d7
boucle2:
add.l d4,d4 ; btst d2,d4
bcs bit31_1 ; bne bit1
move.b (a4)+,(a1)+
bit30:
add.l d4,d4
bcs bit30_1
move.b (a4)+,(a1)+
bit29:
add.l d4,d4
bcs bit29_1
move.b (a4)+,(a1)+
bit28:
add.l d4,d4
bcs bit28_1
move.b (a4)+,(a1)+
bit27:
add.l d4,d4
bcs bit27_1
move.b (a4)+,(a1)+
bit26:
add.l d4,d4
bcs bit26_1
move.b (a4)+,(a1)+
bit25:
add.l d4,d4
bcs bit25_1
move.b (a4)+,(a1)+
bit24:
add.l d4,d4
bcs bit24_1
move.b (a4)+,(a1)+
bit23:
add.l d4,d4
bcs bit23_1
move.b (a4)+,(a1)+
bit22:
add.l d4,d4
bcs bit22_1
move.b (a4)+,(a1)+
bit21:
add.l d4,d4
bcs bit21_1
move.b (a4)+,(a1)+
bit20:
add.l d4,d4
bcs bit20_1
move.b (a4)+,(a1)+
bit19:
add.l d4,d4
bcs bit19_1
move.b (a4)+,(a1)+
bit18:
add.l d4,d4
bcs bit18_1
move.b (a4)+,(a1)+
bit17:
add.l d4,d4
bcs bit17_1
move.b (a4)+,(a1)+
bit16:
add.l d4,d4
bcs bit16_1
move.b (a4)+,(a1)+
bit15:
add.l d4,d4
bcs bit15_1
move.b (a4)+,(a1)+
bit14:
add.l d4,d4
bcs bit14_1
move.b (a4)+,(a1)+
bit13:
add.l d4,d4
bcs bit13_1
move.b (a4)+,(a1)+
bit12:
add.l d4,d4
bcs bit12_1
move.b (a4)+,(a1)+
bit11:
add.l d4,d4
bcs bit11_1
move.b (a4)+,(a1)+
bit10:
add.l d4,d4
bcs bit10_1
move.b (a4)+,(a1)+
bit09:
add.l d4,d4
bcs bit09_1
move.b (a4)+,(a1)+
bit08:
add.l d4,d4
bcs bit08_1
move.b (a4)+,(a1)+
bit07:
add.l d4,d4
bcs bit07_1
move.b (a4)+,(a1)+
bit06:
add.l d4,d4
bcs bit06_1
move.b (a4)+,(a1)+
bit05:
add.l d4,d4
bcs bit05_1
move.b (a4)+,(a1)+
bit04:
add.l d4,d4
bcs bit04_1
move.b (a4)+,(a1)+
bit03:
add.l d4,d4
bcs bit03_1
move.b (a4)+,(a1)+
bit02:
add.l d4,d4
bcs bit02_1
move.b (a4)+,(a1)+
bit01:
add.l d4,d4
bcs bit01_1
move.b (a4)+,(a1)+
bit00:
add.l d4,d4
bcs bit00_1
move.b (a4)+,(a1)+
move.l (a2)+,d4
dbra d0,boucle2
rts
bit31_1:
btst d3,d5
bne bit31_2
move.b d6,(a1)+
subq.w #1,d3
bge bit30
moveq.l #31,d3
move.l (a3)+,d5
bra bit30
bit31_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit30
moveq.l #31,d3
move.l (a3)+,d5
bra bit30
bit30_1:
btst d3,d5
bne bit30_2
move.b d6,(a1)+
subq.w #1,d3
bge bit29
moveq.l #31,d3
move.l (a3)+,d5
bra bit29
bit30_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit29
moveq.l #31,d3
move.l (a3)+,d5
bra bit29
bit29_1:
btst d3,d5
bne bit29_2
move.b d6,(a1)+
subq.w #1,d3
bge bit28
moveq.l #31,d3
move.l (a3)+,d5
bra bit28
bit29_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit28
moveq.l #31,d3
move.l (a3)+,d5
bra bit28
bit28_1:
btst d3,d5
bne bit28_2
move.b d6,(a1)+
subq.w #1,d3
bge bit27
moveq.l #31,d3
move.l (a3)+,d5
bra bit27
bit28_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit27
moveq.l #31,d3
move.l (a3)+,d5
bra bit27
bit27_1:
btst d3,d5
bne bit27_2
move.b d6,(a1)+
subq.w #1,d3
bge bit26
moveq.l #31,d3
move.l (a3)+,d5
bra bit26
bit27_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit26
moveq.l #31,d3
move.l (a3)+,d5
bra bit26
bit26_1:
btst d3,d5
bne bit26_2
move.b d6,(a1)+
subq.w #1,d3
bge bit25
moveq.l #31,d3
move.l (a3)+,d5
bra bit25
bit26_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit25
moveq.l #31,d3
move.l (a3)+,d5
bra bit25
bit25_1:
btst d3,d5
bne bit25_2
move.b d6,(a1)+
subq.w #1,d3
bge bit24
moveq.l #31,d3
move.l (a3)+,d5
bra bit24
bit25_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit24
moveq.l #31,d3
move.l (a3)+,d5
bra bit24
bit24_1:
btst d3,d5
bne bit24_2
move.b d6,(a1)+
subq.w #1,d3
bge bit23
moveq.l #31,d3
move.l (a3)+,d5
bra bit23
bit24_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit23
moveq.l #31,d3
move.l (a3)+,d5
bra bit23
bit23_1:
btst d3,d5
bne bit23_2
move.b d6,(a1)+
subq.w #1,d3
bge bit22
moveq.l #31,d3
move.l (a3)+,d5
bra bit22
bit23_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit22
moveq.l #31,d3
move.l (a3)+,d5
bra bit22
bit22_1:
btst d3,d5
bne bit22_2
move.b d6,(a1)+
subq.w #1,d3
bge bit21
moveq.l #31,d3
move.l (a3)+,d5
bra bit21
bit22_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit21
moveq.l #31,d3
move.l (a3)+,d5
bra bit21
bit21_1:
btst d3,d5
bne bit21_2
move.b d6,(a1)+
subq.w #1,d3
bge bit20
moveq.l #31,d3
move.l (a3)+,d5
bra bit20
bit21_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit20
moveq.l #31,d3
move.l (a3)+,d5
bra bit20
bit20_1:
btst d3,d5
bne bit20_2
move.b d6,(a1)+
subq.w #1,d3
bge bit19
moveq.l #31,d3
move.l (a3)+,d5
bra bit19
bit20_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit19
moveq.l #31,d3
move.l (a3)+,d5
bra bit19
bit19_1:
btst d3,d5
bne bit19_2
move.b d6,(a1)+
subq.w #1,d3
bge bit18
moveq.l #31,d3
move.l (a3)+,d5
bra bit18
bit19_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit18
moveq.l #31,d3
move.l (a3)+,d5
bra bit18
bit18_1:
btst d3,d5
bne bit18_2
move.b d6,(a1)+
subq.w #1,d3
bge bit17
moveq.l #31,d3
move.l (a3)+,d5
bra bit17
bit18_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit17
moveq.l #31,d3
move.l (a3)+,d5
bra bit17
bit17_1:
btst d3,d5
bne bit17_2
move.b d6,(a1)+
subq.w #1,d3
bge bit16
moveq.l #31,d3
move.l (a3)+,d5
bra bit16
bit17_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit16
moveq.l #31,d3
move.l (a3)+,d5
bra bit16
bit16_1:
btst d3,d5
bne bit16_2
move.b d6,(a1)+
subq.w #1,d3
bge bit15
moveq.l #31,d3
move.l (a3)+,d5
bra bit15
bit16_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit15
moveq.l #31,d3
move.l (a3)+,d5
bra bit15
bit15_1:
btst d3,d5
bne bit15_2
move.b d6,(a1)+
subq.w #1,d3
bge bit14
moveq.l #31,d3
move.l (a3)+,d5
bra bit14
bit15_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit14
moveq.l #31,d3
move.l (a3)+,d5
bra bit14
bit14_1:
btst d3,d5
bne bit14_2
move.b d6,(a1)+
subq.w #1,d3
bge bit13
moveq.l #31,d3
move.l (a3)+,d5
bra bit13
bit14_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit13
moveq.l #31,d3
move.l (a3)+,d5
bra bit13
bit13_1:
btst d3,d5
bne bit13_2
move.b d6,(a1)+
subq.w #1,d3
bge bit12
moveq.l #31,d3
move.l (a3)+,d5
bra bit12
bit13_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit12
moveq.l #31,d3
move.l (a3)+,d5
bra bit12
bit12_1:
btst d3,d5
bne bit12_2
move.b d6,(a1)+
subq.w #1,d3
bge bit11
moveq.l #31,d3
move.l (a3)+,d5
bra bit11
bit12_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit11
moveq.l #31,d3
move.l (a3)+,d5
bra bit11
bit11_1:
btst d3,d5
bne bit11_2
move.b d6,(a1)+
subq.w #1,d3
bge bit10
moveq.l #31,d3
move.l (a3)+,d5
bra bit10
bit11_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit10
moveq.l #31,d3
move.l (a3)+,d5
bra bit10
bit10_1:
btst d3,d5
bne bit10_2
move.b d6,(a1)+
subq.w #1,d3
bge bit09
moveq.l #31,d3
move.l (a3)+,d5
bra bit09
bit10_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit09
moveq.l #31,d3
move.l (a3)+,d5
bra bit09
bit09_1:
btst d3,d5
bne bit09_2
move.b d6,(a1)+
subq.w #1,d3
bge bit08
moveq.l #31,d3
move.l (a3)+,d5
bra bit08
bit09_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit08
moveq.l #31,d3
move.l (a3)+,d5
bra bit08
bit08_1:
btst d3,d5
bne bit08_2
move.b d6,(a1)+
subq.w #1,d3
bge bit07
moveq.l #31,d3
move.l (a3)+,d5
bra bit07
bit08_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit07
moveq.l #31,d3
move.l (a3)+,d5
bra bit07
bit07_1:
btst d3,d5
bne bit07_2
move.b d6,(a1)+
subq.w #1,d3
bge bit06
moveq.l #31,d3
move.l (a3)+,d5
bra bit06
bit07_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit06
moveq.l #31,d3
move.l (a3)+,d5
bra bit06
bit06_1:
btst d3,d5
bne bit06_2
move.b d6,(a1)+
subq.w #1,d3
bge bit05
moveq.l #31,d3
move.l (a3)+,d5
bra bit05
bit06_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit05
moveq.l #31,d3
move.l (a3)+,d5
bra bit05
bit05_1:
btst d3,d5
bne bit05_2
move.b d6,(a1)+
subq.w #1,d3
bge bit04
moveq.l #31,d3
move.l (a3)+,d5
bra bit04
bit05_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit04
moveq.l #31,d3
move.l (a3)+,d5
bra bit04
bit04_1:
btst d3,d5
bne bit04_2
move.b d6,(a1)+
subq.w #1,d3
bge bit03
moveq.l #31,d3
move.l (a3)+,d5
bra bit03
bit04_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit03
moveq.l #31,d3
move.l (a3)+,d5
bra bit03
bit03_1:
btst d3,d5
bne bit03_2
move.b d6,(a1)+
subq.w #1,d3
bge bit02
moveq.l #31,d3
move.l (a3)+,d5
bra bit02
bit03_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit02
moveq.l #31,d3
move.l (a3)+,d5
bra bit02
bit02_1:
btst d3,d5
bne bit02_2
move.b d6,(a1)+
subq.w #1,d3
bge bit01
moveq.l #31,d3
move.l (a3)+,d5
bra bit01
bit02_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit01
moveq.l #31,d3
move.l (a3)+,d5
bra bit01
bit01_1:
btst d3,d5
bne bit01_2
move.b d6,(a1)+
subq.w #1,d3
bge bit00
moveq.l #31,d3
move.l (a3)+,d5
bra bit00
bit01_2:
move.b d7,(a1)+
subq.w #1,d3
bge bit00
moveq.l #31,d3
move.l (a3)+,d5
bra bit00
bit00_1:
btst d3,d5
bne bit00_2
move.b d6,(a1)+
subq.w #1,d3
bge.s bitend
moveq.l #31,d3
move.l (a3)+,d5
bitend:
move.l (a2)+,d4
dbra d0,boucle2
rts
bit00_2:
move.b d7,(a1)+
subq.w #1,d3
bge.s bitend
moveq.l #31,d3
move.l (a3)+,d5
move.l (a2)+,d4
dbra d0,boucle2
rts