Add solutions for part 1

projects/07/MemoryAccess/PointerTest/PointerTest.asm

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+// push constant 3030
+@3030
+D = A
+@SP
+A = M
+M = D
+@SP
+M = M + 1
+
+// pop pointer THIS
+@SP
+A = M
+A = A - 1
+D = M
+@SP
+M = M - 1
+@THIS
+M = D
+// ^ pop into THIS
+
+// push constant 3040
+@3040
+D = A
+@SP
+A = M
+M = D
+@SP
+M = M + 1
+
+// pop pointer THAT
+@SP
+A = M
+A = A - 1
+D = M
+@SP
+M = M - 1
+@THAT
+M = D
+// ^ pop into THAT
+
+// push constant 32
+@32
+D = A
+@SP
+A = M
+M = D
+@SP
+M = M + 1
+
+// pop this 2
+@2
+D = A
+@THIS
+A = M
+D = D + A
+@R13
+M = D
+// ^ R13 = this + index
+@SP
+A = M
+A = A - 1
+D = M
+@SP
+M = M - 1
+// ^ pop into D
+@R13
+A = M
+M = D
+// ^ *R13 = D
+
+// push constant 46
+@46
+D = A
+@SP
+A = M
+M = D
+@SP
+M = M + 1
+
+// pop that 6
+@6
+D = A
+@THAT
+A = M
+D = D + A
+@R13
+M = D
+// ^ R13 = that + index
+@SP
+A = M
+A = A - 1
+D = M
+@SP
+M = M - 1
+// ^ pop into D
+@R13
+A = M
+M = D
+// ^ *R13 = D
+
+// push pointer THIS
+@THIS
+D = M
+@SP
+A = M
+M = D
+@SP
+M = M + 1
+// ^ push THIS
+
+// push pointer THAT
+@THAT
+D = M
+@SP
+A = M
+M = D
+@SP
+M = M + 1
+// ^ push THAT
+
+// add
+@SP
+A = M
+A = A - 1
+A = A - 1
+D = M
+A = A + 1
+D = D + M
+A = A - 1
+M = D
+@SP
+M = M - 1
+
+// push this 2
+@2
+D = A
+@THIS
+A = M
+A = D + A
+D = M
+// ^ D = *(LCL + index)
+@SP
+A = M
+M = D
+@SP
+M = M + 1
+// ^ push D
+
+// sub
+@SP
+A = M
+A = A - 1
+A = A - 1
+D = M
+A = A + 1
+D = D - M
+A = A - 1
+M = D
+@SP
+M = M - 1
+
+// push that 6
+@6
+D = A
+@THAT
+A = M
+A = D + A
+D = M
+// ^ D = *(LCL + index)
+@SP
+A = M
+M = D
+@SP
+M = M + 1
+// ^ push D
+
+// add
+@SP
+A = M
+A = A - 1
+A = A - 1
+D = M
+A = A + 1
+D = D + M
+A = A - 1
+M = D
+@SP
+M = M - 1
+

projects/07/MemoryAccess/PointerTest/PointerTest.cmp

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+|RAM[256]| RAM[3] | RAM[4] |RAM[3032|RAM[3046|
+|   6084 |   3030 |   3040 |     32 |     46 |

projects/07/MemoryAccess/PointerTest/PointerTest.tst

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+// 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/07/MemoryAccess/PointerTest/PointerTest.tst
+
+load PointerTest.asm,
+output-file PointerTest.out,
+compare-to PointerTest.cmp,
+output-list RAM[256]%D1.6.1 RAM[3]%D1.6.1 
+            RAM[4]%D1.6.1 RAM[3032]%D1.6.1 RAM[3046]%D1.6.1;
+
+set RAM[0] 256,   // initializes the stack pointer
+
+repeat 450 {      // enough cycles to complete the execution
+  ticktock;
+}
+
+// outputs the stack base, this, that, and
+// some values from the the this and that segments
+output;

projects/07/MemoryAccess/PointerTest/PointerTest.vm

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+// 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/07/MemoryAccess/PointerTest/PointerTest.vm
+
+// Executes pop and push commands using the 
+// pointer, this, and that segments.
+push constant 3030
+pop pointer 0
+push constant 3040
+pop pointer 1
+push constant 32
+pop this 2
+push constant 46
+pop that 6
+push pointer 0
+push pointer 1
+add
+push this 2
+sub
+push that 6
+add

projects/07/MemoryAccess/PointerTest/PointerTestVME.tst

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+// 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/07/MemoryAccess/PointerTest/PointerTestVME.tst
+
+load PointerTest.vm,
+output-file PointerTest.out,
+compare-to PointerTest.cmp,
+output-list RAM[256]%D1.6.1 RAM[3]%D1.6.1 RAM[4]%D1.6.1
+            RAM[3032]%D1.6.1 RAM[3046]%D1.6.1;
+
+set RAM[0] 256,   // initializes the stack pointer
+
+repeat 15 {       // PointerTest.vm has 15 instructions
+  vmstep;
+}
+
+// outputs the stack base, this, that, and
+// some values from the the this and that segments
+output;