95 lines
977 B
NASM
95 lines
977 B
NASM
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; Mandelbrot Set - fasm example program
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include '80186.inc'
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include '8087.inc'
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org 100h
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mov ax,13h ; MCGA/VGA
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int 10h
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push 0A000h
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pop es
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mov dx,3C8h
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xor al,al
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out dx,al
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inc dl
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mov cx,64
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vga_palette:
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out dx,al
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out dx,al
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out dx,al
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inc al
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loop vga_palette
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xor di,di
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xor dx,dx
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finit
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fld [y_top]
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fstp [y]
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screen:
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xor bx,bx
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fld [x_left]
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fstp [x]
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row:
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finit
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fldz
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fldz
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mov cx,63
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iteration:
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fld st0
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fmul st0,st0
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fxch st1
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fmul st0,st2
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fadd st0,st0
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fxch st2
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fmul st0,st0
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fsubp st1,st0
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fxch st1
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fadd [y]
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fxch st1
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fadd [x]
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fld st1
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fmul st0,st0
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fld st1
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fmul st0,st0
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faddp st1,st0
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fsqrt
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fistp [i]
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cmp [i],2
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ja over
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loop iteration
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over:
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mov al,cl
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stosb
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fld [x]
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fadd [x_step]
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fstp [x]
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inc bx
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cmp bx,320
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jb row
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fld [y]
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fsub [y_step]
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fstp [y]
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inc dx
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cmp dx,200
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jb screen
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xor ah,ah
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int 16h
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mov ax,3
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int 10h
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int 20h
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x_left dd -2.2
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y_top dd 1.25
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x_step dd 0.009375
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y_step dd 0.0125
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x dd ?
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y dd ?
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i dw ?
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