lejulien
ba4d9afda9
Those are the examples and the asm & hack (assembled) from the project 6 of nand2tetris
41 lines
730 B
NASM
41 lines
730 B
NASM
// This file is part of www.nand2tetris.org
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// and the book "The Elements of Computing Systems"
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// by Nisan and Schocken, MIT Press.
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// File name: projects/6/rect/Rect.asm
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// Draws a rectangle at the top-left corner of the screen.
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// The rectangle is 16 pixels wide and R0 pixels high.
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// Usage: Before executing, put a value in R0.
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// If (R0 <= 0) goto END else n = R0
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@R0
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D=M
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@END
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D;JLE
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@n
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M=D
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// addr = base address of first screen row
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@SCREEN
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D=A
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@addr
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M=D
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(LOOP)
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// RAM[addr] = -1
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@addr
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A=M
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M=-1
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// addr = base address of next screen row
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@addr
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D=M
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@32
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D=D+A
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@addr
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M=D
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// decrements n and loops
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@n
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MD=M-1
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@LOOP
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D;JGT
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(END)
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@END
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0;JMP |