From a000308104aab27c2dde9a306f1bc654b2db4806 Mon Sep 17 00:00:00 2001 From: Yuchen Pei Date: Wed, 29 Nov 2017 12:30:41 +0100 Subject: first commit --- projects/06/max/Max.asm | 26 ++++++++++++++++++++++++++ projects/06/max/MaxL.asm | 23 +++++++++++++++++++++++ 2 files changed, 49 insertions(+) create mode 100644 projects/06/max/Max.asm create mode 100644 projects/06/max/MaxL.asm (limited to 'projects/06/max') diff --git a/projects/06/max/Max.asm b/projects/06/max/Max.asm new file mode 100644 index 0000000..b62c138 --- /dev/null +++ b/projects/06/max/Max.asm @@ -0,0 +1,26 @@ +// This file is part of www.nand2tetris.org +// and the book "The Elements of Computing Systems" +// by Nisan and Schocken, MIT Press. +// File name: projects/06/max/Max.asm + +// Computes R2 = max(R0, R1) (R0,R1,R2 refer to RAM[0],RAM[1],RAM[2]) + + @R0 + D=M // D = first number + @R1 + D=D-M // D = first number - second number + @OUTPUT_FIRST + D;JGT // if D>0 (first is greater) goto output_first + @R1 + D=M // D = second number + @OUTPUT_D + 0;JMP // goto output_d +(OUTPUT_FIRST) + @R0 + D=M // D = first number +(OUTPUT_D) + @R2 + M=D // M[2] = D (greatest number) +(INFINITE_LOOP) + @INFINITE_LOOP + 0;JMP // infinite loop diff --git a/projects/06/max/MaxL.asm b/projects/06/max/MaxL.asm new file mode 100644 index 0000000..fc3ccbf --- /dev/null +++ b/projects/06/max/MaxL.asm @@ -0,0 +1,23 @@ +// This file is part of www.nand2tetris.org +// and the book "The Elements of Computing Systems" +// by Nisan and Schocken, MIT Press. +// File name: projects/06/max/MaxL.asm + +// Symbol-less version of the Max.asm program. + +@0 +D=M +@1 +D=D-M +@10 +D;JGT +@1 +D=M +@12 +0;JMP +@0 +D=M +@2 +M=D +@14 +0;JMP -- cgit v1.2.3