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Assembly Source File | 1995-03-03 | 81.6 KB | 2,435 lines

;╔═════════════════════════════════════════════════════════════════════════════╗ ;║ Filename: GIANT.ASM ║ ;╠═════════════════════════════════════════════════════════════════════════════╣ ;║ Source Codes for GIANT. The Ultimate 4KB-Intro! [:)] v. 1.1 ║ ;║ ║ ;║ Written by: Sigma of Star Team Productions, (Σ, STP) ║ ;║ alias Jari Kytöjoki ║ ;║ ║ ;║ Snail-Mail: Jari Kytöjoki ║ ;║ Puolukkakatu 5 ║ ;║ 44200 Suolahti ║ ;║ Finland, Europe, Earth ║ ;║ ║ ;║ E-Mail: jari.kytojoki@hut.fi ║ ;║ ║ ;║ Please, send me a Postcard!!! ║ ;║ Send me your source codes! (or at least some technical info, etc...) ;) ║ ;║ Don't hesitate to contact me! ║ ;║ ║ ;║ Copyright (C) 1994, 1995 Jari Kytöjoki. All Rights Reserved. ║ ;╚═════════════════════════════════════════════════════════════════════════════╝ ; After many inquiries for sources I decided to release this ; source code. It is released as public domain. You can do it ; whatever you want or like. But remember, if you are just ; planning to make a new intro only by adding, removing or any ; other way changing a few lines of this code, you are entering ; worldwide lamers' club. But if you are reading this file just ; because you want to learn something new, go on it! This is ; the most biggest reason why I released this code. However, ; I cannot promise there's anything new that you haven't known ; before. (It's always worth studying new sources...) If you find ; this file very helpful, please send me a postcard or at least ; write me some E-Mail. ;─────────────────────────────────────────────────────────────────────────── ; You can compile this file with TASM, I included MAKE.BAT ; to help you. You'll notice that resulting COM-file will be ; much larger than the released version. This is due to ; the original COM-file has been compressed to fit in those ; specified limits. If you are just compiling, testing and ; debugging this source file there's no harm of it. You'll ; have to compress the COM-file with your own compressor if ; you want the new COM-file to be as small as the original ; one. ;-) ;─────────────────────────────────────────────────────────────────────────── ; The code was optimized mainly for size and some parts seem to ; be coded quite weirdly. In some time critical parts I repeated ; the source code and I trusted the compressor would do the rest, ; so that the file would be less than 4KB. There is still some ; "extra" dummy bytes which could easily be removed. ; My opinion of making a small intro is not hard. I had quite a ; many ideas to put in this intro within the limits I had set, but ; soon all 4KB was used and I had to think all over again. Many of ; my plans finished undone. The size limit was reached too quickly. ; I hope you enjoy my intro and learn something new. ; ;Last words: I'm sorry there isn't too many comments in this file. ; Just try to figure it out. ;═══════════════════════════════════════════════════════════════════════════ Code Segment Para Public use16 'Code' .386 .387 Jumps Assume cs:Code, ds:Code, es:Code, ss:Code, fs:Code, gs:Code Temp0 Equ word ptr ds:10A2h Temp1 Equ word ptr ds:10A4h Temp2 Equ word ptr ds:10A6h Temp4 Equ word ptr ds:0100h Sin2T Equ word ptr ds:0D000h Cos2T Equ word ptr ds:0D200h SinT Equ word ptr ds:0E000h CosT Equ word ptr ds:0E200h Temp_PAL3 Equ word ptr 0DF00h Temp_PAL2 Equ word ptr 0DC00h Temp_PAL1 Equ word ptr 0EC00h Row256T Equ word ptr ds:0CE00h CharP Equ word ptr ds:0106h CharColor Equ word ptr ds:010Ah TextSeg = Temp0 XMin Equ word ptr ds:010Ch YMax Equ word ptr ds:010Eh XStep Equ word ptr ds:0110h YStep Equ word ptr ds:0112h ScreenX Equ word ptr ds:0114h ScreenY Equ word ptr ds:0116h NMax Equ word ptr ds:0118h x Equ word ptr ds:011Ah y Equ word ptr ds:011Ch zi Equ word ptr ds:011Eh zr Equ word ptr ds:0120h cr Equ word ptr ds:0122h ci Equ word ptr ds:0124h d2x = zi d2y = zr i = ScreenX j = ScreenY TempPAL1 Equ word ptr 0E000h TempPAL2 Equ word ptr 0E400h M_WaitVRT Macro Local @@wv1, @@wv2 @@wv1: in al, dx test al, 8 jz @@wv1 @@wv2: in al, dx test al, 8 jnz @@wv2 EndM M_WaitVRT_DX Macro mov dx, 03DAh M_WaitVRT EndM M_FadePAL_Out Macro SourcePAL, DestPAL Local @@fo1, @@fo2 mov bx, 0200h @@fo1: mov si, SourcePAL mov di, DestPAL mov cx, 3*256 @@fo2: lodsb sub al, bl cmc sbb ah, ah and al, ah stosb loop @@fo2 mov si, DestPAL mov cx, 3*256 mov dx, 03DAh M_WaitVRT_DX mov dx, 03C8h mov al, 00h out dx, al inc dx rep outsb mov dx, 03DAh M_WaitVRT_DX add bl, bh test bl, 3Fh jnz @@fo1 EndM M_FadePAL_In Macro SourcePAL, DestPAL Local @@fi1, @@fi2 mov bx, 0FE40h @@fi1: mov si, SourcePAL mov di, DestPAL mov cx, 3*256 @@fi2: lodsb sub al, bl cmc sbb ah, ah and al, ah stosb loop @@fi2 mov si, DestPAL mov cx, 3*256 mov dx, 03DAh M_WaitVRT_DX mov dx, 03C8h mov al, 00h out dx, al inc dx rep outsb mov dx, 03DAh M_WaitVRT_DX add bl, bh test bl, 3Fh jnz @@fi1 EndM M_FadeOUT Macro SrcPAL, DstPAL cli M_FadePAL_Out SrcPAL, DstPAL sti EndM M_FadeIN Macro SrcPAL, DstPAL cli M_FadePAL_In SrcPAL, DstPAL sti EndM M_ClearPAL Macro Local @@cp M_WaitVRT_DX mov cx, 768 mov dx, 03C8h xor ax, ax out dx, al inc dx @@cp: out dx, al loop @@cp EndM M_KeyPressed Macro mov ah, 01h int 16h jnz @KeyDownOut EndM org 100h Begin: mov bp, offset @GetNextBit mov si, offset @CompressedBlock mov di, 1100h mov ax, 0E781h cwd cld xor cx, cx ;;; the file is not jmp Start ;;; compressed, yet! :) ; cli ; instead of above ; xor cx, cx ; if the file is ; jmp @Decompress ; compressed with XPC @CompressedBlock: ret org 10A2h dw (1024 shr 1), 8192, 0000h ; Start of DeCompression routine. You'll have perhaps no use for ; this routine because you need my XPACK proggy to compress ; files. Use your debugger to study the original ; xpc-compressed GIANT.COM. ; (Sorry my executable file compressor isn't ready for release ; yet because I'm out of time and funds to finish it) :( @GetNextBit: shl ax, 1 jnz @NoNewAX lodsw rcl ax, 1 @NoNewAX: ret @CopyByte: dec dx xor [si], dl movsb @Again: call bp jnc @CopyByte @Decompress: mov bx, cx call bp jc @CX2_3 call bp jnc @CX4_5_Over21 @CXInc: inc cx call bp jc @CXInc call bp rcl cx, 1 @CX2_3: call bp @CX4_5: rcl cx, 1 @ReadBX: call bp jc @ReadBL jcxz @BHBelow6 call bp jc @BHOver6 @BHBelow6: call bp jc @BH3_6 call bp jnc @BH1 call bp jnc @MoveBytes @BH1: adc bh, 1 @ReadBL: mov bl, [si] inc si @MoveBytes: push si not bx lea si, [bx+di] inc cx inc cx rep movsb pop si jmp @Again db '(c)Σstp94' @CX4_5_Over21: inc cx call bp jnc @CX4_5 call bp jc @CX4_5 mov cl, [si] inc si jcxz Start add cx, 1Fh jmp @ReadBX @BHOver6: call bp rcl bh, 1 call bp rcl bh, 1 inc bh @BH3_6: call bp rcl bh, 1 call bp rcl bh, 1 inc bh stc jmp @BH1 ; End of DeCompression routine... Start: sti mov es, cx ; preparations for some nice settings mov di, 0472h ; you'll know it for sure mov ax, ds:[0002h] mov dx, cs sub ax, dx cmp ax, 5000h ; This Intro needs 320K mem. jb @OutOfMemory cmp sp, 0FFF8h jae @CheckFPU ; if Enough Memory, continue @OutOfMemory: mov al, 01h mov ah, 4Ch int 21h @CheckFPU: ; check the existence of the Floating Point Unit finit xor ax, ax stosw ; Use Cold Boot if necessary :) mov es, dx mov [Temp4], cx fstcw [Temp4] wait cmp byte ptr [Temp4+1], 03h ; Check for Floating Point Unit je @FPUFound mov al, 03h mov ah, 4Ch int 21h @FPUFound: pushf ; Check for 80286 push cx popf pushf pop ax popf and ax, 0F000h cmp ax, 0F000h je @CPUBelow286 mov cx, 0F000h pushf ; Check for 80386 push cx popf pushf pop ax popf and ax, 0F000h jne @CPU386Plus @CPUBelow286: mov al, 02h mov ah, 4Ch int 21h @CPU386Plus: mov ah, 1Ah mov al, 00h int 10h ; Check for VGA cmp bl, 07h jb @NoVGA cmp al, 1Ah je @VGAFound @NoVGA: mov al, 04h mov ah, 4Ch int 21h @VGAFound: mov ah, 30h int 21h ; Get DOS Version cmp al, 03h jae @DOSOkay mov al, 05h mov ah, 4Ch int 21h @DOSOkay: mov bl, 32h mov al, 00h mov ah, 12h int 10h mov dx, 03CCh ; set your VGA to in al, dx ; correct mode... or al, 01h ; B/W -> COLOR mov dx, 03C2h out dx, al mov cx, 0FF00h mov ah, 01h int 10h mov al, 01h mov ah, 35h int 21h ; Get BreakPoints Handler push es push bx mov al, 03h mov ah, 35h int 21h ; Get Single Step Handler push es push bx cli mov al, 03h mov ah, 25h mov dx, 0F0F0h mov ds, dx int 21h ; Disable Breakpoints mov al, 01h mov ah, 25h mov dx, 0F0F0h mov ds, dx int 21h ; Disable Single Step sti mov ax, cs add ax, ((offset Last_Word-offset Begin)+0100h)/16 mov ds, ax mov ax, cs add ax, 1000h mov es, ax mov cx, (offset W_Divider-offset Data_Seg)/4+2 mov si, offset Data_Seg mov di, si rep movsd @KeyPressed1: mov ah, 01h int 16h jz @KeyBufferCleared xor ax, ax int 16h jmp @KeyPressed1 @KeyBufferCleared: finit ; Make Sin and Cos Tables xor si, si mov ax, cs mov es, ax mov ds, ax mov cx, 321 fild [YY] fldpi fild [XX] fdivp st(1), st @MakeSINCOS: mov [XX], si fild [XX] fmul st, st(1) fsin fmul st, st(2) fistp word ptr [si+SinTable] inc si loop @MakeSINCOS mov dx, TempPAL1 xor bx, bx mov cx, 256 mov al, 17h mov ah, 10h int 10h M_FadeOUT TempPAL1, TempPAL2 wait M_KeyPressed mov al, 13h mov ah, 00h int 10h mov dx, TempPAL1 xor bx, bx mov cx, 256 mov al, 17h mov ah, 10h int 10h M_ClearPAL mov dx, offset Text2String mov ah, 9 int 21h mov ax, cs add ax, 2000h mov es, ax mov fs, ax mov ax, 0A000h mov gs, ax xor si, si xor di, di Rept 8 mov cx, 5*8/4 rep db 65h ; GS segment override prefix movsd add si, (320-5*8) EndM Rept 8 mov cx, 12*8/4 rep db 65h ; GS segment override prefix movsd add si, (320-12*8) EndM Rept 8 mov cx, 9*8/4 rep db 65h ; GS segment override prefix movsd add si, (320-9*8) EndM mov ax, 0A000h mov es, ax mov cx, 199*256 @BG1: mov dx, 319 @BG2: mov di, cx shr di, 2 add di, cx add di, dx mov al, dl xor al, ch and al, 1Fh xor al, 30h stosb dec dx jge @BG2 sub ch, 1 jnc @BG1 mov ax, 0707h xor si, si M_WriteText Macro TextXYMove mov di, (60+TextXYMove)*320+120+TextXYMove Rept 8 Local @@wt1, @@wt2 mov cx, 5*8 @@wt1: cmp byte ptr fs:[si], 0 jz @@wt2 mov es:[di], ax mov es:[di+320], ax @@wt2: add di, 2 inc si loop @@wt1 add di, 240+320 EndM mov di, (92+TextXYMove)*320+64+TextXYMove Rept 8 Local @@wt1, @@wt2 mov cx, 12*8 @@wt1: cmp byte ptr fs:[si], 0 jz @@wt2 mov es:[di], ax mov es:[di+320], ax @@wt2: add di, 2 inc si loop @@wt1 add di, 128+320 EndM mov di, (124+TextXYMove)*320+88+TextXYMove Rept 8 Local @@wt1, @@wt2 mov cx, 9*8 @@wt1: cmp byte ptr fs:[si], 0 jz @@wt2 mov es:[di], ax mov es:[di+320], ax @@wt2: add di, 2 inc si loop @@wt1 add di, 176+320 EndM EndM M_WriteText 1 xor ax, ax xor si, si M_WriteText -1 mov ax, cs mov ds, ax mov es, ax M_FadeIN TempPAL1, TempPAL2 mov cx, 250 @wv1: M_WaitVRT_DX loop @wv1 M_FadeOUT TempPAL1, TempPAL2 M_KeyPressed mov al, 12h mov ah, 00h int 10h mov cx, 20h @wv2: M_WaitVRT_DX loop @wv2 mov bh, 03h mov al, 30h mov ah, 11h int 10h mov [CharGen], bp push es pop fs push ax mov bl, 15 @SetNextPAL: mov bh, bl mov al, 00h mov ah, 10h int 10h add cx, 4 dec bl jns @SetNextPAL M_WaitVRT_DX mov dx, 3D4h mov ax, 6A0Ch out dx, ax mov dx, 03C8h xor al, al out dx, al inc dx mov cx, 16*3 xor ax, ax @SetPal: xor al, al out dx, al out dx, al mov al, ah out dx, al add ah, 4 loop @SetPal mov dx, 03CEh mov ax, 0205h out dx, ax finit mov ax, 0A000h mov es, ax xor si, si xor ax, ax xor di, di mov cx, 65536/2 rep stosw @CCPopAX: pop ax @CC: mov bp, [CharGen] xor ebx, ebx mov bl, [si+Text1String] lea ebp, [ebp+8*ebx+7] inc si and si, 1Fh fld [Const1] fmul [CosBB] fadd [BB] fcom [Const3] fstsw ax fwait sahf ja @GlobeOut fst [BB] fcos fld1 fdivrp st(1), st fst [CosBB] fld [Const4] fmul st, st(1) fstp [IIAdd] fmul [Const2] fadd [LL] fstp [LL] fldz fstp [JJ] mov bl, 32 @BB: fldz fstp [II] fld [JJ] ; B := ... fadd [BB] fsincos fstp [CosB] fstp [SinB] test bl, 3 jnz @BPOK dec bp @BPOK: push bp mov bp, fs:[bp] Rept 8 ; just for better compression ratio mov ax, offset CalcPixel call ax EndM pop bp fld [JJ] fadd [Const4] fstp [JJ] dec bx jnz @BB jmp @CC @GlobeOut: push cs pop es mov dx, TempPAL1 xor bx, bx mov cx, 256 mov al, 17h mov ah, 10h int 10h mov cx, 250 @wv3: M_WaitVRT_DX loop @wv3 M_KeyPressed mov dx, 03CEh mov ax, 0FF08h out dx, ax mov bx, 6A00h @ScrollDown: M_WaitVRT_DX mov dx, 3D4h mov al, 0Dh mov ah, bl out dx, ax dec ax mov ah, bh out dx, ax sub bx, 80*2 or bx, bx jns @ScrollDown M_FadeOUT TempPAL1, TempPAL2 cli mov al, 03h mov ah, 25h mov dx, 0F0F0h mov ds, dx int 21h ; Disable Breakpoints mov al, 01h mov ah, 25h mov dx, 0F0F0h mov ds, dx int 21h ; Disable Single Step mov ax, cs mov ds, ax mov es, ax sti M_KeyPressed Add_Items Equ offset LastBopAdd - offset BopAddTab BopPts Equ Add_Items TimeOut Equ 8192 TimeOut2 Equ 150 MaxWidth Equ 320 CenterX Equ 160 CenterY Equ 100 MaxBops Equ 350 RadiusX Equ 144 RadiusY Equ 176 PhInc1 Equ 2 PhInc2 Equ 3 mov al, 13h mov ah, 00h int 10h mov cx, 20h @wv4: M_WaitVRT_DX loop @wv4 mov cx, Add_Items mov si, offset LastBopAdd - 1 mov di, offset LastBopAdd + Add_Items - 2 xor ax, ax std @Expand0: lodsb stosw loop @Expand0 cld mov dx, Add_Items/2 mov si, offset BopADDLengths - 1 mov di, offset LastBopAdd + Add_Items + 3*Add_Items/2 mov ax, 12*320 @Expand1: inc si sub di, 3*Add_Items/2 mov bp, di mov cl, [si] neg ax sub ax, cx @Expand2: inc ax stosw loop @Expand2 add bp, dx mov di, bp mov cl, [si] add ax, cx @Expand3: stosw dec ax loop @Expand3 add bp, dx mov di, bp mov cl, [si] add ax, 320 neg ax sub ax, cx @Expand4: inc ax stosw loop @Expand4 add bp, dx mov di, bp mov cl, [si] add ax, cx @Expand5: stosw dec ax loop @Expand5 jnz @Expand1 mov ax, 0A000h mov es, ax M_ShadeBOBs Macro @Time Local @@Set1Pal, @@Set1Brk, @@Set2Pal, @@Set2Brk, @@Set3Pal, @@Set3Brk M_WaitVRT_DX mov dx, 03C8h xor al, al out dx, al inc dx mov cx, 256 xor ax, ax @@Set1Pal: xor al, al out dx, al mov al, ah out dx, al xor al, al out dx, al cmp ah, 62 jae @@Set1Brk inc ah @@Set1Brk: loop @@Set1Pal xor bp, bp mov [Frames], @Time mov ax, offset ShadesLoop call ax M_WaitVRT_DX mov dx, 03C8h xor al, al out dx, al inc dx mov cx, 256 xor ax, ax @@Set2Pal: mov al, ah out dx, al xor al, al out dx, al out dx, al cmp ah, 62 jae @@Set2Brk inc ah @@Set2Brk: loop @@Set2Pal xor bp, bp mov [Frames], @Time mov ax, offset ShadesLoop call ax M_WaitVRT_DX mov dx, 03C8h xor al, al out dx, al inc dx mov cx, 256 xor ax, ax @@Set3Pal: xor al, al out dx, al out dx, al mov al, ah out dx, al cmp ah, 62 jae @@Set3Brk inc ah @@Set3Brk: loop @@Set3Pal xor bp, bp mov [Frames], @Time call ShadesLoop EndM M_ShadeBOBs TimeOut M_KeyPressed mov cx, 30 @FlashBOBs: push cx M_ShadeBOBs TimeOut2 pop cx loop @FlashBOBs jmp @BOBs_Out ShadesLoop: mov si, 2*2188 mov ax, [Phase1] add ax, PhInc1 cwd div si mov [Phase1], dx mov ax, [Angle] add ax, 20h mov [Angle], ax mul dx xor bx, bx mov bl, dl mov ah, [bx+CosTable] mov al, RadiusX imul ah sar ax, 6 add ax, CenterX mov di, ax mov ax, [Phase2] add ax, PhInc2 cwd div si mov [Phase2], dx mov ax, [Angle] mul dx mov bl, dl mov ah, [bx+SinTable] mov al, RadiusY imul ah sar ax, 6 add ax, CenterY imul dx, ax, MaxWidth call PutBop dec [Frames] jne ShadesLoop mov dx, MaxBops @HideBOBsLoop: mov di, -1 call HideBop dec dx jnz @HideBOBsLoop retn @BOBs_Out: cli mov al, 03h mov ah, 25h mov dx, 0F0F0h mov ds, dx int 21h ; Disable Breakpoints mov al, 01h mov ah, 25h mov dx, 0F0F0h mov ds, dx int 21h ; Disable Single Step mov ax, cs mov ds, ax mov es, ax sti finit ; Make Sin and Cos Tables xor si, si mov ax, cs mov ds, ax mov es, ax add ax, 2000h mov fs, ax mov cx, 2*5*128+1 fld [Mult1] fild [Temp1] fldpi fild [Temp0] fdivp st(1), st @Make2SINCOS: fild [Temp2] fmul st, st(1) fsincos fmul st, st(4) fistp [si+Sin2T] fmul st, st(2) fistp [si+SinT] inc [Temp2] inc si inc si loop @Make2SINCOS wait xor ax, ax mov cx, 200 mov di, offset Row256T @MakeRow256: stosw add ax, 256 loop @MakeRow256 mov bh, 03h mov al, 30h mov ah, 11h int 10h mov [CharP+0], bp mov [CharP+2], es mov dx, cs mov es, dx M_KeyPressed M_WaitVRT_DX mov al, 13h mov ah, 00h int 10h mov dx, offset Temp_PAL2 xor bx, bx mov cx, 256 mov al, 17h mov ah, 10h int 10h cli mov si, offset Temp_PAL2+3*20h mov di, offset Temp_PAL3 mov cx, 3*10h rep movsw M_ClearPAL sti push fs pop es xor di, di mov ax, di mov cx, 32*100h rep stosw mov [TextSeg], es mov [CharColor], 0F09h mov di, 4*100h+8 mov si, offset Gfx1Text call GfxWrite push fs pop es mov si, 0*100h mov di, 4*8*100h mov cx, 7*4*8*128 rep db 26h ; ES segment override prefix movsw mov [x], 7A00h mov [y], 2176 xor bx, bx mov di, 40 call RotateMap2 push cs pop es M_FadeIN Temp_PAL2, Temp_PAL1 xor bx, bx mov di, 40 @Rotate1Map: push bx push di call RotateMap2 M_WaitVRT_DX pop di pop bx add [x], 16 add [y], 16 add di, 30h sub bx, 4 cmp di, 2*1385 jb @Rotate1Map push cs pop es M_KeyPressed mov [XMin], -5500 mov [YMax], 0 mov [NMax], 512 ;256 mov [cr], 2100 mov [ci], 0 mov [XStep], 10 mov [YStep], 10 push fs pop es call CalcFractal mov [YMax], 1280+0 mov ax, es add ah, 08h mov es, ax call CalcFractal mov ax, cs mov es, ax M_FadeOUT Temp_PAL2, Temp_PAL1 M_KeyPressed mov si, TempPAL2 mov cx, 3*256 mov dx, 03DAh M_WaitVRT_DX mov dx, 03C8h mov al, 00h out dx, al inc dx rep outsb sti call RotatePAL20 mov [x], 32768 mov [y], 0 xor bx, bx mov di, 7800h @Rotate2Map: push bx push di call RotateMap2 M_WaitVRT_DX pop di pop bx add bx, 8 sub di, 2*40h jnc @Rotate2Map M_KeyPressed mov cx, 10 @wv5: M_WaitVRT_DX loop @wv5 mov cx, 984 mov dx, 2*50 xor bx, bx mov di, 0 @Rotate3Map: pusha call RotateMap call RotatePAL20 popa sub [x], 16 sub [y], 16 add di, dx cmp di, 6000h jna @ZoomDIR neg dx @ZoomDIR: sub bx, 4 loop @Rotate3Map M_FadeOUT Temp_PAL2, Temp_PAL1 M_KeyPressed M_WaitVRT_DX mov al, 13h mov ah, 00h int 10h push fs pop es xor di, di mov ax, di mov cx, 10000h/2 rep stosw mov [TextSeg], es mov [CharColor], 0C00h mov di, 80 mov si, offset Gfx2Text call GfxWrite mov [x], 8000h mov [y], 400h mov bx, 2*512 mov di, 1200h @Rotate4Map: push bx push di call RotateMap2 M_WaitVRT_DX pop di pop bx sub bx, 2*4 jns @BXOkay xor bx, bx @BXOkay: sub di, 18h jnc @Rotate4Map M_KeyPressed push fs pop es xor di, di mov ax, di mov cx, 10000h/2 rep stosw mov [TextSeg], es mov [CharColor], 0A00h mov di, 116 mov si, offset Gfx3Text call GfxWrite xor bx, bx mov di, 0000 @Rotate5Map: push bx push di call RotateMap2 M_WaitVRT_DX pop di pop bx add di, 18h cmp di, 1200h jbe @Rotate5Map M_FadeOUT Temp_PAL2, Temp_PAL1 M_KeyPressed Assume Ds:Data FreeSpace Equ W_Divider _TempR32A Equ dword ptr ds:FreeSpace+00h _TempR32B Equ dword ptr ds:FreeSpace+04h _TempR32C Equ dword ptr ds:FreeSpace+08h _TempReg Equ dword ptr ds:FreeSpace+0Ch MountHeight Equ word ptr ds:FreeSpace+10h Map_X Equ word ptr ds:FreeSpace+12h Map_Y Equ word ptr ds:FreeSpace+14h RandomSeed Equ word ptr ds:FreeSpace+16h _TempR16A Equ word ptr ds:FreeSpace+18h _TempR16B Equ word ptr ds:FreeSpace+1Ah _TempR16C Equ word ptr ds:FreeSpace+1Ch Count_Loop Equ word ptr ds:FreeSpace+1Eh Table_A Equ 0200h Table_B Equ 0400h Table_C Equ 0600h mov ax, cs add ax, 1000h mov ds, ax mov es, ax mov di, offset Data_Seg stosw add ax, 1000h stosw add ax, 1000h stosw add ax, 1000h stosw stc sbb eax, eax mov cx, (offset LastMake_-offset MapMakeTable)/2+1 @Decompress2: add ax, [di] inc ax stosw loop @Decompress2 xor ax, ax int 1Ah and dh, 7Fh ; mov dx, 7FFFh ; just guess why used in here... mov [RandomSeed], dx mov ax, 0013h int 10h cli mov dx, 03C8h xor al, al out dx, al inc dx mov cx, 64 xor ax, ax @SetPal1: out dx, al out dx, al out dx, al inc ax loop @SetPal1 mov cx, 64 xor ax, ax @SetPal2: xor al, al out dx, al out dx, al mov al, ah out dx, al inc ah loop @SetPal2 mov cx, 64 xor ax, ax @SetPal3: out dx, al mov al, ah out dx, al xor al, al out dx, al inc ah loop @SetPal3 mov cx, 64 @SetPal4: out dx, al out dx, al out dx, al loop @SetPal4 sti mov dx, offset Temp_PAL2 xor bx, bx mov cx, 256 mov al, 17h mov ah, 10h int 10h cli M_ClearPAL sti call CalcSky mov [Count_Loop], 1024 mov [Map_X], 1024 mov [Map_Y], 1024 mov ax, offset UpdateView call ax mov es, [Data_Seg] mov ax, offset UpdateSky call ax mov ax, offset UpdateMap call ax M_WaitVRT_DX mov es, [VRAM_Seg] mov si, offset Table_C mov di, (320-256)/2 mov bl, 200 @Copy2VRAM: mov cx, 256/4 rep movsd add di, (320-256) dec bl jnz @Copy2VRAM mov es, [Data_Seg] M_FadeIN Temp_PAL2, Temp_PAL1 mov cx, 250 @wv6: M_WaitVRT_DX loop @wv6 @DrawAgain: mov ax, offset UpdateView call ax mov es, [Data_Seg] mov ax, offset UpdateSky call ax mov ax, offset UpdateMap call ax M_WaitVRT_DX mov es, [VRAM_Seg] mov si, offset Table_C mov di, (320-256)/2 mov bl, 200 @CopyToVRAM: mov cx, 256/4 rep movsd add di, (320-256) dec bl jnz @CopyToVRAM dec [Count_Loop] jnz @DrawAgain mov es, [Data_Seg] M_FadeOUT Temp_PAL2, Temp_PAL1 jmp @TheEND CalcSky: xor di, di mov es, [Sky_Seg] mov fs, [MapB_Seg] stc sbb eax, eax mov cx, 4000h rep stosd mov si, [RandomSeed] M_MakeMUL Macro mov ax, 0AFh mul si add ax, 2BC0h adc dx, 0 div [W_Divider] mov si, dx EndM M_MakeMUL mov [RandomSeed], dx xor bx, bx mov cx, 0100h mov byte ptr es:[0080h], -2 mov byte ptr es:[8000h], -2 mov byte ptr es:[0000h], cl mov byte ptr es:[8080h], cl call CalcFrac xor di, di CalcSky1: mov ah, 01h mov al, es:[di] shr ax, 2 stosb or di, di jnz CalcSky1 ; CalcMap mov es, [MapA_Seg] mov fs, [MapB_Seg] stc sbb eax, eax mov cx, 4000h rep stosd mov si, [RandomSeed] M_MakeMUL mov [RandomSeed], dx xor bx, bx mov cx, 0100h mov al, 40 stosb call CalcFrac xor di, di CalcMap1: xor ax, ax mov si, offset MapCoord_ mov bx, [si] add al, es:[bx+di] adc ah, ch inc si inc si mov bx, [si] add al, es:[bx+di] adc ah, ch inc si inc si mov bx, [si] add al, es:[bx+di] adc ah, ch inc si inc si mov bx, [si] add al, es:[bx+di] adc ah, ch shr ax, 2 stosb or di, di jnz CalcMap1 xor si,si CalcMap2: mov al, es:[si] sub al, es:[si+3] sbb ah, ah add ax, 20h jns CalcMap3 xor ax, ax CalcMap3: cmp al, 3Fh jbe CalcMap4 mov al, 3Fh CalcMap4: mov fs:[si],al inc si jnz CalcMap2 CalcMap5: xor ax, ax add al, es:[di] adc ah, ch add al, es:[di+0100h] adc ah, ch inc di add al, es:[di] adc ah, ch add al, es:[di+0100h] adc ah, ch dec di shr ax, 2 stosb or di, di jnz CalcMap5 OutCalcFrac: retn CalcFrac: shr cx, 1 jz OutCalcFrac xor ax, ax add al, es:[bx] adc ah, ch add bl, cl mov di, bx add bl, cl M_Calc2Square Macro Local @@CS1, @@CS2 mov ch, al M_MakeMUL sub dx, 67E8h xor ax, ax mov al, cl shl ax, 3 imul dx xor ax, ax add dl, ch mov ch, al adc dh, ch js @@CS2 jz @@CS1 mov dl, 0FEh @@CS1: mov al, dl @@CS2: EndM M_CalcSquare Macro Local @@CS3 cmp byte ptr es:[di], 0FFh jne @@CS3 add al, es:[bx] adc ah, ch shr ax, 1 M_Calc2Square stosb @@CS3: EndM M_CalcSquare xor ax, ax add al, es:[bx] adc ah, ch add bh, cl mov di, bx add bh, cl M_CalcSquare xor ax, ax add al, es:[bx] adc ah, ch sub bl, cl mov di, bx sub bl, cl M_CalcSquare xor ax, ax add al, es:[bx] adc ah, ch sub bh, cl mov di, bx sub bh, cl M_CalcSquare xor ax, ax add al, es:[bx] adc ah, ch add bl, cl add bl, cl add al, es:[bx] adc ah, ch add bh, cl add bh, cl add al, es:[bx] adc ah, ch sub bl, cl sub bl, cl add al, es:[bx] adc ah, ch shr ax, 2 M_Calc2Square add bl, cl sub bh, cl mov es:[bx], al push bx push cx call CalcFrac pop cx pop bx sub bl, cl push bx push cx call CalcFrac pop cx pop bx sub bh, cl push bx push cx call CalcFrac pop cx pop bx add bl, cl call CalcFrac retn UpdateView: mov cx, [Map_X] mov dx, [Map_Y] mov bx, [Count_Loop] dec bx shr bx, 8 shl bx, 1 add cx, [bx+AddCXTable] add dx, [bx+AddDXTable] mov [Map_X], cx mov [Map_Y], dx ; Calculate New Points mov es, [MapA_Seg] ror cx, 4 ror dx, 4 mov bl, cl mov bh, dl shr cx, 0Ch shr dx, 0Ch push dx inc bl xor ax, ax add al, es:[bx] dec bl sub al, es:[bx] sbb ah, ah imul cx mov dx, ax xor ax, ax add al, es:[bx] shl ax, 4 add ax, dx xchg si, ax inc bh inc bl xor ax, ax add al, es:[bx] dec bl sub al, es:[bx] sbb ah, ah imul cx mov dx, ax xor ax, ax add al, es:[bx] shl ax, 4 add ax, dx pop dx sub ax, si imul dx shl si, 4 add ax, si add ah, 1Ah jnc CalcNew1 mov ax, 0FFFFh CalcNew1: mov [MountHeight], ax mov ah, 01h int 16h jz CalcNew2 mov [Count_Loop], 1 xor ax, ax int 16h CalcNew2: retn UpdateSky: mov si, offset MountHeight mov di, offset _TempR32A xor eax, eax lodsw neg ax shr ax, 3 add ah, 40h shl eax, 4 shl eax, 9 stosd xor eax, eax lodsw shl eax, 9 stosd xor eax, eax lodsw shl eax, 9 stosd mov gs, [Sky_Seg] lea ecx, [si-(offset MountHeight-offset Data_Seg)-6+63h] mov di, Table_C @UpdateSky1: mov si, offset _TempR32A mov eax, [si] xor edx, edx div ecx mov ebx, [si+4] mov esi, [si+8] sub esi, eax add ebx, eax shr eax, 7 mov bp, si shr esi, 10h and si, 0FFh shr ebx, 8 xor bl, bl or si, bx mov ebx, eax shr ebx, 10h dec bx rept 255 db 65h ; GS segment override prefix movsb add bp, ax adc si, bx EndM db 65h ; GS segment override prefix movsb dec cx jnz @UpdateSky1 mov eax, 50505050h mov cx, 40h rep stosd mov si, [MountHeight] mov bx, 04 @UpdateSky2: mov ax, si xor dx, dx div bx shr ax, 7 cmp al, 3Fh jbe @UpdateSky3 mov al, 3Fh @UpdateSky3: or al, 80h mov ah, al mov dx, ax shl eax, 10h xchg ax, dx mov cx, 40h rep stosd inc bx cmp bx, 2Ch jne @UpdateSky2 retn UpdateMap: mov fs, [MapA_Seg] mov gs, [MapB_Seg] mov eax, 7D007D00h mov di, Table_A mov cx, 40h rep stosd mov cx, 40h rep stosd xor eax, eax mov di, Table_B mov cx, 40h rep stosd mov cx, 40h rep stosd mov [_TempR16A], 78h @UpdateMap1: mov si, [_TempR16A] mov si, [si+MapMakeTable] shl si, 4 mov ax, [Map_Y] and ax, 0Fh xor al, 0Fh add si, ax mov ax, [MountHeight] xor dx, dx div si add ax, 64h mov [_TempR16B], ax lea eax, [si] shl eax, 6 mov [_TempReg], eax cmp [_TempR16A], 2 jne @UpdateMap2 mov [_TempR16B], 7D00h mov [_TempR16C], 0000h jmp @UpdateMap3 @UpdateMap2: xor ax, ax mov dx, 1 div si mov [_TempR16C], ax @UpdateMap3: xor ecx, ecx mov cx, [Map_X] shl ecx, 0Ch mov eax, [_TempReg] shl eax, 7 sub ecx, eax mov ax, [Map_Y] shl ax, 4 mov ebx, ecx shr ebx, 10h mov bh, ah mov ax, si shl ax, 4 add bh, ah mov si, 1FEh mov word ptr [_TempR32B], Table_C shr cx, 1 @UpdateMap4: shl cx, 1 add cx, word ptr [_TempReg] adc bl, byte ptr [_TempReg+2] shr cx, 1 mov al, fs:[bx+1] sub al, fs:[bx] sbb ah, ah imul cx shrd ax, dx ,7 add ah, fs:[bx] mul [_TempR16C] mov di, [_TempR16B] sub di, dx jns @UpdateMap5 mov di, 0FFFFh @UpdateMap5: cmp di, 0C8h jl @UpdateMap6 mov di, 0C7h @UpdateMap6: mov al, gs:[bx+1] sub al, gs:[bx] imul ch shl ax, 1 add ah, gs:[bx] mov dx, ax xchg ax, [si+Table_B] mov bp, di xchg bp, [si+Table_A] sub bp, di jns @UpdateMap7 shl di, 8 add di, word ptr [_TempR32B] push ax sub ax, dx cwd idiv bp pop dx push bx lea bx, [bp+1] shl bp, 1 shl bx, 8 lea bp, [ebp+ebp*2] add bp, offset @UpdateMap8+06h call bp pop bx @UpdateMap7: inc word ptr [_TempR32B] dec si dec si jns @UpdateMap4 sub [_TempR16A], 2 jnz @UpdateMap1 retn Assume ds:Code @TheEND: M_KeyPressed mov ax, cs mov ds, ax mov es, ax add ax, 2000h mov fs, ax M_WaitVRT_DX mov al, 13h mov ah, 00h int 10h mov dx, offset Temp_PAL2 xor bx, bx mov cx, 256 mov al, 17h mov ah, 10h int 10h push fs pop es xor di, di mov ax, di mov cx, 10000h/2 rep stosw mov [TextSeg], es mov [CharColor], 0E03h mov di, 44 mov si, offset Gfx4Text call GfxWrite mov [x], 8000h mov [y], 0800h xor bx, bx mov di, 1008h @Rotate6Map: push bx push di call RotateMap2 M_WaitVRT_DX pop di pop bx sub di, 18h jnc @Rotate6Map mov ax, cs mov es, ax mov ds, ax M_FadeOUT Temp_PAL2, Temp_PAL1 jmp @NoKeyPressed @KeyDownOut: M_WaitVRT_DX mov al, 13h mov ah, 00h int 10h mov cx, 20h @wv7: M_WaitVRT_DX loop @wv7 xor ax, ax int 16h @NoKeyPressed: M_WaitVRT_DX mov al, 03h mov ah, 00h int 10h ; Switch Back to Char Mode cli mov bx, 414Fh M_WaitVRT_DX M_WaitVRT mov ah, bh mov dx, 03D4h mov al, 09h out dx, ax mov cx, (offset EndPicCol-offset EndPic) mov dx, 0B800h mov es, dx xor di, di mov si, offset EndPic @PutPage: mov ah, [si+(offset EndPicCol-offset EndPic)] lodsb stosw loop @PutPage sti mov dx, 0700h mov bh, 00h mov ah, 02h int 10h cli mov bx, 424Fh @IncCharHeight: M_WaitVRT_DX M_WaitVRT mov ah, bh mov dx, 03D4h mov al, 09h out dx, ax inc bh cmp bh, bl jbe @IncCharHeight sti mov al, 03h mov ah, 25h pop dx pop ds int 21h ; Enable Breakpoints mov al, 01h mov ah, 25h pop dx pop ds int 21h ; Enable Single Step mov al, 00h mov ah, 4Ch int 21h PutBop: add di, dx xor si, si mov cx, BopPts/4 @PutLoop: mov ax, [si+BopAddTab] mov bx, [si+BopTab] add es:[bx+di], al mov ax, [si+BopAddTab+2] mov bx, [si+BopTab+2] add es:[bx+di], al mov ax, [si+BopAddTab+4] mov bx, [si+BopTab+4] add es:[bx+di], al mov ax, [si+BopAddTab+6] mov bx, [si+BopTab+6] add es:[bx+di], al add si, 8 loop @PutLoop HideBop: xchg ds:[bp+BopQueue], di cmp di, -1 jae @SkipHide xor si, si mov cx, BopPts/4 @HideLoop: mov ax, [si+BopAddTab] mov bx, [si+BopTab] sub es:[bx+di], al mov ax, [si+BopAddTab+2] mov bx, [si+BopTab+2] sub es:[bx+di], al mov ax, [si+BopAddTab+4] mov bx, [si+BopTab+4] sub es:[bx+di], al mov ax, [si+BopAddTab+6] mov bx, [si+BopTab+6] sub es:[bx+di], al add si, 8 loop @HideLoop @SkipHide: add bp, 2 cmp bp, 2*MaxBops sbb bx, bx and bp, bx ret CalcPixel: mov bh, 4 @CalcPixel: or bp, bp jns @NoPixel fld [II] ; L := ... fadd [LL] fsincos fmul [CosB] fld [Cos1] fmul st, st(1) fld [SinB] fmul [Sin1] faddp st(1), st fimul [Ker1] fistp [U] fwait mov ax, [U] fmul [Sin1] fld [Cos1] fmul [SinB] fsubrp st(1), st fimul [Ker2] fistp [YY] fmul [CosB] fimul [Ker2] fistp [XX] or ax, ax js @CCPopAX inc ax and al, 0Fh mov cx, 320 fwait add cx, [XX] mov di, cx and di, 7 mov dx, 03CEh mov ah, [di+MaskTable] mov di, ax mov al, 08h out dx, ax mov ax, di mov di, 240 sub di, [YY] shr cx, 3 shl di, 4 add cx, di shl di, 2 add di, cx add di, 6A00h mov ah, es:[di] stosb @NoPixel: fld [II] fadd [IIAdd] fstp [II] dec bh jnz @CalcPixel shl bp, 1 retn PrintChar: ; si = Char Number, di = Place. cli mov si, ax shl si, 3 add si, [CharP] mov cl, 08h mov dx, 03C4h @@MC1: mov es, [CharP+2] db 26h ; ES segment override prefix lodsb mov ch, al mov es, [TextSeg] Rept 8 xor bx, bx shl ch, 1 adc bx, offset CharColor mov al, [bx] stosb EndM add di, 256-8 ;320-8 dec cl jz @@MCOUT jmp @@MC1 @@MCOUT: sub di, 8*256-8 ;8*320-8 sti retn M_ShlDXAX Macro Count Rept Count shl ax, 1 rcl dx, 1 EndM EndM CalcFractal: cli mov ax, [YMax] mov [y], ax mov [ScreenY], 0 @RepeatY: mov ax, [XMin] mov [x], ax mov [ScreenX], 0 @RepeatX: xor cx, cx mov ax, [y] mov [zi], ax mov di, ax imul di M_ShlDXAX 3 mov di, dx mov ax, [x] mov [zr], ax mov si, ax imul si M_ShlDXAX 3 mov si, dx @RepeatCount: mov ax, si sub ax, di add ax, [cr] mov si, ax mov ax, [zr] imul [zi] M_ShlDXAX 4 add dx, [ci] mov di, dx mov [zi], dx mov [zr], si mov ax, si imul si M_ShlDXAX 3 mov si, dx mov ax, di imul di M_ShlDXAX 3 mov di, dx add dx, si jc @CountOut js @CountOut inc cx cmp cx, [NMax] jna @RepeatCount xor ax, ax jmp @Plot @CountOut: mov ax, cx mov cl, 31 div cl mov al, ah inc al @Plot: and al, 1Fh add al, 20h mov si, [ScreenX] mov di, [ScreenY] mov cx, di mov di, [di+offset Row256T] add di, si stosb inc [ScreenX] mov ax, [x] add ax, [XStep] mov [x], ax cmp si, 288 jae @OutM1 jmp @RepeatX @OutM1: mov dx, 3DAh in al, dx mov dx, 3C0h mov al, 11h+32 out dx, al mov al, cl shr al, 1 and al, 0Fh out dx, al add [ScreenY], 2 mov ax, [y] add ax, [YStep] mov [y], ax cmp cx, 256 jae @OutM2 jmp @RepeatY @OutM2: sti retn M_Init_Rotate Macro Method Local @@ir1, @@ir2 mov ax, 0A000h mov es, ax and bh, 7 mov ax, [bx+SinT] imul di sar dx, 1 adc dx, 0 mov bp, dx mov ax, [bx+CosT] imul di sar dx, 1 adc dx, 0 mov si, dx mov ax, [bx+Sin2T] imul di sar dx, 1 adc dx, 0 mov [d2y], dx imul cx, dx, 100 mov ax, [bx+Cos2T] imul di sar dx, 1 adc dx, 0 mov [d2x], dx imul dx, 100 imul bx, si, 160 add bx, dx mov ax, [x] sub ax, bx imul bx, bp, 160 add bx, cx mov dx, [y] sub dx, bx xor di, di @@ir1: mov [i], ax mov [j], dx mov cx, 320/4 @@ir2: Rept 4 add ax, si add dx, bp mov bl, ah mov bh, dh mov bl, fs:[bx] mov es:[di], bl inc di EndM loop @@ir2 If Method inc si inc bp EndIf mov ax, [d2x] mov dx, [d2y] add ax, [i] add dx, [j] cmp di, 4*16000 jb @@ir1 mov ax, cs mov es, ax retn EndM RotateMap2: M_Init_Rotate 0 RotateMap: M_Init_Rotate 1 RotatePAL20: cli std mov si, offset Temp_PAL3+3*1Fh-2 mov di, offset Temp_PAL3+3*20h-2 mov ax, [di] mov bl, [di-1] mov cx, 47 rep movsw mov [di+1], ax mov [di], bl cld mov si, di mov cx, 3*20h mov dx, 03DAh M_WaitVRT_DX mov dx, 03C8h mov al, 20h out dx, al inc dx rep outsb sti retn GfxWrite: xor ax, ax @WriteFPush: push di @WriteF: lodsb or al, al jz @WriteFLN cmp al, 0FFh je @WriteFOut push si call PrintChar pop si jmp @WriteF @WriteFLN: pop di add di, 8*256 ;320 jmp @WriteFPush @WriteFOut: pop di mov dx, cs mov es, dx retn Rept 199 mov [bx+di], dh add dx, ax inc bh EndM @UpdateMap8: mov [bx+di], dh retn EndPic db ' ╔══════════════════════════════════════════════════════════════════════════╗ ' db '╔═╝ ╚═╗' db '║ ▄ ▄▄▄ ╔══╗ ║ ║ ═╦═ ╔══╗ ╔══ ╔═╦═╗ ╔══ ╔═╦═╗ ╔══╗ ╔══╗ ║ ║ ║ ▄ ▄▄▄ ║' db '║ ▄ ▄▄▄ ║ ║ ║ ║ ║ ║ ║ ╠═ ║ ║ ║ ╠═ ║ ║ ║ ║ ║ ╠═╦╝ ╚╦╝ ║ ▄ ▄▄▄ ║' db '║ ╚══╝ ╚══╝ ║ ╚══╝ ║ ║ ║ ║ ╚══ ║ ║ ║ ╚══╝ ║ ╚╗ ║ ■ ║' ; db '║ Released at Assembly ''94 in Finland, (C) 1994 ║' db '║ Released at Assembly ''94 in Finland, (C) 1994 Σ, STP ║' db '╚══════════════════════════════════════════════════════════════════════════════╝' db '█████████▒▒▒▒▒▒▒▒░░░░░░░GIANT - the Ultimate 4KB-Intro!░░░░░░░░▒▒▒▒▒▒▒▒█████████' EndPicCol db 80 dup (1Fh), 80 dup (1Fh) db 3 dup (1Fh), 11h, 3 dup (1Fh), 66 dup (1Ch), 1Fh, 11h, 5 dup (1Fh) db 3 dup (1Fh), 11h, 3 dup (1Fh), 66 dup (1Eh), 1Fh, 11h, 5 dup (1Fh) db 9 dup (1Fh), 62 dup (1Ah), 9 dup (1Fh) db 80 dup (1Fh), 80 dup (1Fh), 24 dup (19h), 5 dup (9Eh),3 dup (15h), 4 dup (1Ah), 9 dup(1Dh) db 1Fh, 17h, 17h, 14h, 5 dup(13h), 1Ch, 25 dup (19h) Gfx1Text db '╔════════════════════════════╗', 0 db '║Please wait while Computing!║', 0 db '╚════════════════════════════╝', 0, -1 Gfx2Text db 'Is that all?', 0, -1 Gfx3Text db 'NO!', 0, -1 Gfx4Text db '╔═══════════════════╗', 0 db '║ That''s all Folks! ║', 0 db '╚═══════════════════╝', 0, -1 Text1String db ' Assembly 1994 *' db ' GIANT 4KB-Intro' Text2String db 'GIANT', 13, 10 db 'the Ultimate', 13, 10 db '4KB-Intro$' db 2 dup (00h) SinTable label byte db 64 dup (00h) CosTable label byte db 258 dup (00h) Frames dw 0000h U dw 0 CharGen dw 0 SinB dd 0 CosB dd 0 II dd 0 JJ dd 0 IIAdd dd 0 LL dd 0.0e00 BB dd -1.0e00 Const1 dd 2e-03 Const2 dd 0.09e00 Const3 dd 1.255e00 Const4 dd 0.0025e00 Sin1 dd 0.84147098480791e00 Cos1 dd 0.54030230586814e00 CosBB dd 1.8508157176809e00 Mult1 dd 9830.4 Ker1 dw 14 Ker2 dw 240 XX dw 80h YY dw 40h MaskTable db 80h, 40h, 20h, 10h, 08h, 04h, 02h, 01h BopQueue dw MaxBops dup(-1) Angle dw -1 and 0FFC0h Phase1 dw 2*1024-PhInc1 Phase2 dw 2*1024-PhInc2 BopADDLengths db 5, 8, 9, 11, 12, 13, 13, 14, 14, 15, 15, 15 db 10 dup (01h) BopAddTab label word Rept 4 db 1,1,1,1,1 db 1,1,1,2,2,2,2,2 db 1,1,2,2,2,3,3,3,3 db 1,1,2,2,3,3,3,3,3,3,3 db 1,1,2,2,3,3,3,3,4,4,4,4 db 1,1,2,2,3,3,3,4,4,4,4,4,4 db 1,2,2,3,3,3,4,4,4,5,5,5,5 db 1,2,2,3,3,3,4,4,4,5,5,6,6,6 db 1,2,2,3,3,4,4,5,5,5,6,6,6,6 db 1,2,2,3,3,4,4,4,5,5,6,6,7,7,7 db 1,2,2,3,3,4,4,5,5,6,6,7,7,7,7 db 1,2,2,3,3,4,4,5,5,6,6,7,7,7,7 EndM LastBopAdd db 4*144 dup (00h) BopTab label word ; db 10 dup (00h) ; in reserve for correct alignment align 16 Last_Word: Code EndS Data Segment Byte Public Use16 Data_Seg dw 0000h MapA_Seg dw 0000h MapB_Seg dw 0000h Sky_Seg dw 0000h MapMakeTable dw 41 dup (0000h), 10 dup (0001h), 09 dup (0003h) LastMake_ dw 0003h, 0000h AddCXTable dw 32, -16, -8, 8 AddDXTable dw -32, -8, 16, 8 MapCoord_ dw 0000h, 0004h, 0202h, 0FEFFh VRAM_Seg dw 0A000h W_Divider dw 0DB97h Data EndS End Begin