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- *****************************************************************************
- * *
- * Second Part For Demo ( Introduction ) *
- * *
- * Start Date : 2/3/91 *
- * Last Update : 2/3/91 *
- * Code : Melt Down *
- * *
- *****************************************************************************
-
- ; Include the macros
-
- Incdir Df1:
- Include Source/Macro
-
- *****************************************************************************
-
- ; Dont forget to use chip ram
-
- Chip
-
- *****************************************************************************
-
- ; Kill the operating system for good mesure
-
- Kill
-
- *****************************************************************************
-
- ; Load custom and set up copper list
-
- Lea Custom,A5
- Move.l #Copper,Cop1lch(a5)
-
- *****************************************************************************
-
- ; Clear Some Shit
-
- Blitwait
- Move.l #$70000,Bltdpth(a5)
- Move.l #-1,Bltafwm(a5)
- Move.w #0,Bltdmod(a5)
- Move.l #$01000000,Bltcon0(a5)
- Move.w #256*64+60,Bltsize(a5)
-
- *****************************************************************************
-
- Blitwait
-
- *****************************************************************************
-
- Bsr PrintTitle
-
- *****************************************************************************
-
- ; Main routine here
-
- Mouse
- Pos ; Get in sync with vbi
- Bsr Scroller
- Tst.l OutFlag
- Bne.s Quit
- Tstmice Mouse ; Pressed the mouse
-
- *****************************************************************************
-
- ; Return operating system and go back to user
-
- Quit
- Heal
- Clr.l D0 ; No error
- Rts
-
- *****************************************************************************
-
- Scroller
- Tst.l Scrolled
- Bne.s Scrollon
- Move.l #8,Scrolled
- Moveq #0,D0
- Move.l ScrollPtr,a0
- Move.b (a0)+,d0
- Cmp.b #-1,D0
- Bne.s NoEnd
- Move.l #Scroll,A0
- Move.b (a0)+,d0
- Move.l #-1,OutFlag
- NoEnd
- Move.l a0,ScrollPtr
- Sub.b #32,d0
- Divu #20,d0
- Move.w d0,d1
- Mulu #40*16,d1
- Swap d0
- Add.w d0,d0
- Add.w d0,d1
- Lea Font,A2
- Add.w D1,A2
- Move.l A2,Bltapth(A5)
- Move.l #$70000+(62*42)-18,Bltdpth(A5)
- Move.w #38,Bltamod(A5)
- Move.w #40,Bltdmod(A5)
- Move.l #-1,Bltafwm(A5)
- Move.l #$09f00000,Bltcon0(a5)
- Move.w #16*64+1,Bltsize(A5)
- Scrollon
-
- Move.l #$70002+(62*42)-18,Bltapth(A5)
- Move.l #$70000+(62*42)-18,Bltdpth(A5)
- Move.w #0,Bltamod(A5)
- Move.w #0,Bltdmod(A5)
- Move.l #-1,Bltafwm(A5)
- Move.l #$E9f00000,Bltcon0(a5)
- Move.w #16*64+21,Bltsize(A5)
- Sub.l #1,Scrolled
- Rts
- Scrolled
- Dc.l 0
-
- *****************************************************************************
-
- PrintTitle
- Move.l #$09f00000,Bltcon0(a5)
- Move.w #38,Bltamod(A5)
- Move.w #38,Bltdmod(A5)
- Move.l #-1,Bltafwm(a5)
- Move.l #20-1,d7 ; Amount Of Chars
- Lea $70000+(3*40),A0 ; Dest
- Lea Title,A1 ; Text
- Move.w #16*64+1,D6
- Loop
- Moveq #0,D0
- Moveq #0,D1
- Move.b (a1)+,d0
- Sub.b #32,d0
- Divu #20,d0
- Move.w d0,d1
- Mulu #40*16,d1
- Swap d0
- Add.w d0,d0
- Add.w d0,d1
- Lea Font,A2
- Add.w D1,A2
- Move.l A2,Bltapth(A5)
- Move.l A0,Bltdpth(A5)
- Move.w D6,Bltsize(a5)
- Add.w #2,A0
- Dbf D7,Loop
- Rts
-
- *****************************************************************************
-
- ; All copper list after here
-
- Copper
-
- Spr_Off ; Switch sprites off
- Cmove $2871,Diwstrt
- Cmove $2cc1,Diwstop
- Cmove $0038,Ddfstrt
- Cmove $00d0,Ddfstop
- Cmove $0000,Bpl1mod
- Cmove $0000,Bpl2mod
- Cmove $0000,Color00
- Cmove $0fff,Color01
- A Set 70
- B Set $0000
- Rept $f
- Cwait a,0
- Cmove B,Color00
- A Set a+1
- B Set B+$100
- Endr
- Rept $f
- Cwait a,0
- Cmove B,Color00
- A Set a+1
- B Set B-$100
- Endr
-
- Cmove $0007,Bpl1pth
- Cmove $0000,Bpl1ptl
- Cmove $1200,Bplcon0
-
- A Set 120
- B Set $0000
- Rept $f
- Cwait a,0
- Cmove B,Color00
- A Set a+1
- B Set B+$010
- Endr
- Rept $f
- Cwait a,0
- Cmove B,Color00
- A Set a+1
- B Set B-$010
- Endr
- Cmove 2,Bpl1mod
- Cmove 2,Bpl2mod
-
- A Set 190
- B Set $0000
- Rept $f
- Cwait a,0
- Cmove B,Color00
- A Set a+1
- B Set B+$110
- Endr
- Rept $f
- Cwait a,0
- Cmove B,Color00
- A Set a+1
- B Set B-$110
- Endr
- Cmove $0200,Bplcon0
- Endcop
-
- *****************************************************************************
-
- Title
- DC.B " ARENA PRESENTS "
-
- *****************************************************************************
-
- OUTFLAG DC.L 0
-
- *****************************************************************************
-
- SCROLLPTR
- DC.L SCROLL
- SCROLL
- DC.B " THERE FIRST DEMO"
- DC.B " CREDS FOR THIS COOL DEMO GO TO"
- DC.B " ME MELT DOWN FOR THE CODE GFX ARE BY EFFEX"
- DC.B " THE MUSIC IS BY ?????"
- DC.B " NOW THIS IS AN AMIGA LETS USE IT LIKE ONE"
- DC.B " WELL LETS COUNT DOWN TO THE REAL CODE "
- DC.B 255
- EVEN
-
- *****************************************************************************
-
- Font
- Incbin Gfx/16x16.bm
-
- *****************************************************************************
-
-