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Compendium Deluxe 2
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LSD and 17bit Compendium Deluxe - Volume II.iso
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a
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prog
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asmsrc
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tango2.lha
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fucked.s
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1988-07-19
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7KB
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322 lines
opt c-
section blitter,code_c Chip Ram please !!
include df1:definitions Give me some hardware reggies
include df1:macros Give me some macros
;LOCAL CONSTANTS
icra equ $bfed01
allocmem =-30-168
freemem =-30-180
fontmemory =4000
TAKEOVER:
LEA custom,a5
LEA GFXLIB(PC),a1 Point to 'graphics.library'
MOVEQ #0,D0 Doesn't matter which version
MOVE.L 4.w,a6 EXECBASE
jsr -132(a6) task switching off (forbid)
JSR -$228(a6) Openlibrary
MOVE.L D0,GFXBASE Store library address
;Now put the graphic addresses in the CopperList
move.l #sin_screen,d1 Bitplane memory address
move.w d1,bp1lo+2
swap d1
move.w d1,bp1hi+2
move.l GFXBASE,d0 Move gfxbase offset to d0
MOVE.L D0,A6
MOVE.W #$80,dmacon(a5) Turn off copper whilst changing it
MOVE.L $32(A6),WBCOPPER Store old (WBench) copper address
MOVE.L #OURCOPPER,$32(A6) Point to new copper list (our own)
MOVE.W #$8080,dmacon(a5) re-enable copper
MOVE.W #$8010,intena(a5)
MOVE.L $6c,old Save work bench interrupt
MOVE.L #LEV3,$6c This sets up a level 3 interrupt
move.w intenar(a5),systemints
move.b #%01111111,icra Kill keyboard
WAIT:
BTST #6,$BFE001 This waits for the left
BNE.S WAIT mouse button to be pressed
move.l 4.w,a6 EXECBASE
MOVE.L old,$6c Restore system interrupts
MOVE.L GFXBASE,A6
MOVE.W #$80,dmacon(a5) Disable DMA
MOVE.L WBCOPPER,$32(A6) Restore old copperlist
MOVE.W #$8080,dmacon(a5) Enable DMA
move.w systemints,d0 Systems interrupt
or.w #$c000,d0
move.w d0,intena(a5) Enable OS interrupts
move.b #%10011011,icra Enable keyboard
clr.w $dff0a8 Clear music
clr.w $dff0b8
clr.w $dff0c8
clr.w $dff0d8
move.w #$f,$dff096
rts
ERROR:
move.l 4.w,a6 Get EXECBASE
jsr -138(a6) Permit ( multi-tasking on )
moveq #0,d0 Clear d0
RTS Return to AmigaDOS
;This is the NEW level 3 interrupt
LEV3:
MOVEM.L d0-d7/a0-a6,-(sp) Save all registers to the stack
lea custom,a5
AND #$10,intreqr(a5) Check if interrupt is from Copper
BNE out
move.w #$8010,$9c
bsr try_sin
bsr scroll
out:
MOVEM.L (sp)+,d0-d7/a0-a6 Restore the registers
DC.W $4ef9 hex value for JMP instruction
old:
DC.L 0 will jump to normal interrupt
; ** THE SCROLL ROUTINE **
scroll
cmp.l #15,val Blitshifted all <<<
blo.s coarse_scroll_it No then get doing it !!
bsr blit_char Blit letter to screen
clr.l val Reset index
coarse_scroll_it:
bsr coarse Scroll all line
rts
; ** BLIT LETTER ON THE SCREEN **
blit_char
jsr text
lea custom,a5 Get custom chip address
move.l screenx,a0 Can~t see this picture !!
move.l #font,a1 Put font in blitter source
add.l d1,a1
blit_test:
btst #14,$dff002 Blitter busy !!!
bne blit_test Lets wait till she finishes !
move.w #$ffff,bltafwm(a5) Mask (DON'T NEED ONE)
move.w #$ffff,bltalwm(a5) Mask (DON'T NEED ONE)
move.l a0,bltdpth(a5) Blitter dest D (BOTTOM OF SCREEN)
move.l a1,bltapth(a5) Blitter source A (SCROLLING FONT)
move.w #38,bltamod(a5) Modulo (20-1)*2
move.w #38,bltdmod(a5) Modulo (20-1)*2
move.w #$9f0,bltcon0(a5) Minterms D=A
clr.w bltcon1(a5) Set Ascending mode
move.w #16*64+1,bltsize(a5) Blit size (SIZE OF FONT)
rts Return
; ** BLITSHIFT THE ENTIRE SCROLL LINE (BETTER THAN USING THE HARDWARE).
coarse:
lea custom,a5
move.l screenx,a0 ; Can~t see this picture !!
move.l a0,a1
add.l #2,a1
blit_wait:
btst #14,$dff002
bne blit_wait
incl #4,val ; (1 for slower)
move #12,d7 ; Amount of pixels to shift(15 for slow)
ror #4,d7 ; Set to correct bits (12-15)
or #%100111110000,d7
move.l #-1,bltafwm(a5)
move.l a1,bltapth(a5)
move.l a0,bltdpth(a5)
move.w #0,bltamod(a5)
move.w #0,bltdmod(a5)
move.w d7,bltcon0(a5)
move.w #80*64+20,bltsize(a5)
rts
; ** BLITTER CLEAR WHERE THE SINE SCROLL HAS JUST BEEN **
CLEAR:
Move.l #sin_screen,a0
wate
btst #14,$dff002
bne.s wate
Move.l a0,Bltdpth(a5)
Move #0,Bltdmod(a5)
Move.l #$1f00000,Bltcon0(a5)
Move #150*64+20,Bltsize(a5)
Rts
try_sin:
move.w #38,bltamod(a5)
move.w #38,bltdmod(a5)
move.w #38,bltbmod(a5)
move.w #$dfc,bltcon0(a5)
move.l screenx,a0 ; Source A
move.l #sin_screen,a1
move.l sinpointer,a2
move.b #20,d4
blitloop:
moveq #3,d1
move.l #8,d2
inloop:
move.l a1,a3
cmp.l #$ffff,(a2)
bne.s nowblit
lea.l sintab,a2
nowblit:
add.l (a2),a3
bbb:btst #14,$dff002
bne.s bbb
move.l a0,bltapth(a5)
move.l a3,bltdpth(a5)
move.l a3,bltbpth(a5)
move.w d1,bltafwm(a5)
move.w d1,bltalwm(a5)
move.w #1025,bltsize(a5)
lsl.w #2,d1
dbf d2,inloop
add.l #2,a0 ; Get next letter along
add.l #2,d6
dbf d4,blitloop
add.l #4,sinpointer
move.l sinpointer,a0
cmp.l #$ffff,(a0)
bne.s rre
move.l #sintab,sinpointer
rre:rts
sinpointer: dc.l 0
sintab:
dc.l 40,80,120,160,200,240,280,320,360,400,440,480,520
dc.l 560,600,640,680,$ffff,$ffff
EVEN
; ** CHARACTER DECODER ROUTINE **
text:
move.l acurent,a2 Get message
clr.l d1
move.b (a2)+,d1 Update it
move.b d1,letter Store in offset
cmp.b #255,d1 Check for end of message
beq.w rst_text If equal, then reset
sub.l #32,d1 Subract 32 (ie space)
asl d1 Times by 2
move.l a2,acurent Update acurent
CMP.B #"4",letter Is letter "K" or larger
BPL.s add_more If larger then add on
rts Return
add_more:
CMP.B #"H",letter Is letter "U" or larger
BPL.S add_more2 If larger then add on
add.l #40*15,d1 Get next line down (KLMNOPQRST)
rts
add_more2:
add.l #40*30,d1 Get next line down (UVWXYZ0123)
rts
rst_text:
move.l #0,d1
move.l #message,d2 Get begining of text
move.l d2,acurent Reset to begining
rts Return
message:
; *=FACE
DC.B "TANGO OF CRYPTIC UK PRESENTS A SMALL INTRO NO WAY NEAR"
DC.B " FINISHED. "
DC.B 255
EVEN
; ** THE COPPERLIST **
OURCOPPER:
dc.w $120,0
dc.w $122,0
dc.w bpl1mod,0,bpl2mod,0
dc.w diwstrt,$2c81+32,diwstop,$2cc1-32
dc.w bplcon0,$1200,bplcon1,$0000
dc.w ddfstrt,$38,ddfstop,$d0
dc.w color00,$000,color01,$094
bp1lo: dc.w bpl1ptl,$0000
bp1hi: dc.w bpl1pth,$0000
end_copper
;LOCAL CONSTANTS
WBCOPPER: DC.L 0
GFXLIB: DC.B "graphics.library",0
GFXBASE: DC.L 0
systemints: dc.l 0
scroll_offset: dc.l 0
screenx: dc.l picture
letter: dc.b 0
acurent: dc.l message
val: dc.l 0
;BINARY FILES TO BE INCLUDED
EVEN
picture
dcb.b 10240,0
sin_screen:
dcb.b 10240,0
font
incbin df1:neatfont.bin