From 3a9265774c48865547702fe58d127c9fe10338a1 Mon Sep 17 00:00:00 2001 From: Yuchen Pei Date: Wed, 17 Jan 2018 10:04:48 +0100 Subject: finished Memory.jack --- projects/12/Memory.jack | 46 +++++ projects/12/MemoryTest/Main.vm | 126 ++++++++++++ projects/12/MemoryTest/Memory.jack | 84 ++++++++ projects/12/MemoryTest/Memory.vm | 362 ++++++++++++++++++++++++++++++++++ projects/12/MemoryTest/MemoryTest.out | 2 + 5 files changed, 620 insertions(+) create mode 100644 projects/12/MemoryTest/Main.vm create mode 100644 projects/12/MemoryTest/Memory.jack create mode 100644 projects/12/MemoryTest/Memory.vm create mode 100644 projects/12/MemoryTest/MemoryTest.out (limited to 'projects/12') diff --git a/projects/12/Memory.jack b/projects/12/Memory.jack index 941eec1..b1e67ef 100644 --- a/projects/12/Memory.jack +++ b/projects/12/Memory.jack @@ -9,26 +9,72 @@ * consists of 32,768 words, each holding a 16-bit binary number. */ class Memory { + static Array memory; + static Array heap; + static int first; /** Initializes the class. */ function void init() { + let memory = 0; + let heap = 2048; + let heap[0] = -1; + let heap[1] = 14334; } /** Returns the RAM value at the given address. */ function int peek(int address) { + return memory[address]; } /** Sets the RAM value at the given address to the given value. */ function void poke(int address, int value) { + let memory[address] = value; } /** Finds an available RAM block of the given size and returns * a reference to its base address. */ function int alloc(int size) { + var int current; + var int size2; + var int newLast; + let current = 0; + let size2 = size + 2; + while ((current > -1) & (heap[current + 1] < size2)) { + let current = heap[current]; + } + if (current = -1) { + String.println("Insufficient space for allocation!"); + Sys.error(1); + } else { + let heap[current + 1] = heap[current + 1] - size2; + let newLast = current + heap[current + 1] + 2; + let heap[newLast] = heap[current]; + let heap[current] = newLast; + let heap[newLast + 1] = size; + return heap + newLast + 2; + } } /** De-allocates the given object (cast as an array) by making * it available for future allocations. */ function void deAlloc(Array o) { + var int base; + var int current; + var int prev; + let prev = 0; + let current = heap[prev]; + let oBase = o - heap - 2; + while ((current > -1) & (~(current = oBase))){ + let prev = current; + let current = heap[current]; + } + if (current = -1) { + String.println("The impossible happened"); + Sys.error(1); + } else { + let heap[prev] = heap[current] + let heap[prev + 1] = heap[prev] - prev - 2; + return; + } } } diff --git a/projects/12/MemoryTest/Main.vm b/projects/12/MemoryTest/Main.vm new file mode 100644 index 0000000..a3a9e81 --- /dev/null +++ b/projects/12/MemoryTest/Main.vm @@ -0,0 +1,126 @@ +function Main.main 4 +push constant 8000 +push constant 333 +call Memory.poke 2 +pop temp 0 +push constant 8000 +call Memory.peek 1 +pop local 0 +push constant 8001 +push local 0 +push constant 1 +add +call Memory.poke 2 +pop temp 0 +push constant 3 +call Array.new 1 +pop local 1 +push constant 2 +push local 1 +add +push constant 222 +pop temp 0 +pop pointer 1 +push temp 0 +pop that 0 +push constant 8002 +push constant 2 +push local 1 +add +pop pointer 1 +push that 0 +call Memory.poke 2 +pop temp 0 +push constant 3 +call Array.new 1 +pop local 2 +push constant 1 +push local 2 +add +push constant 2 +push local 1 +add +pop pointer 1 +push that 0 +push constant 100 +sub +pop temp 0 +pop pointer 1 +push temp 0 +pop that 0 +push constant 8003 +push constant 1 +push local 2 +add +pop pointer 1 +push that 0 +call Memory.poke 2 +pop temp 0 +push constant 500 +call Array.new 1 +pop local 3 +push constant 499 +push local 3 +add +push constant 2 +push local 1 +add +pop pointer 1 +push that 0 +push constant 1 +push local 2 +add +pop pointer 1 +push that 0 +sub +pop temp 0 +pop pointer 1 +push temp 0 +pop that 0 +push constant 8004 +push constant 499 +push local 3 +add +pop pointer 1 +push that 0 +call Memory.poke 2 +pop temp 0 +push local 1 +call Array.dispose 1 +pop temp 0 +push local 2 +call Array.dispose 1 +pop temp 0 +push constant 3 +call Array.new 1 +pop local 2 +push constant 0 +push local 2 +add +push constant 499 +push local 3 +add +pop pointer 1 +push that 0 +push constant 90 +sub +pop temp 0 +pop pointer 1 +push temp 0 +pop that 0 +push constant 8005 +push constant 0 +push local 2 +add +pop pointer 1 +push that 0 +call Memory.poke 2 +pop temp 0 +push local 3 +call Array.dispose 1 +pop temp 0 +push local 2 +call Array.dispose 1 +pop temp 0 +push constant 0 +return diff --git a/projects/12/MemoryTest/Memory.jack b/projects/12/MemoryTest/Memory.jack new file mode 100644 index 0000000..8583b62 --- /dev/null +++ b/projects/12/MemoryTest/Memory.jack @@ -0,0 +1,84 @@ +// 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/12/Memory.jack + +/** + * This library provides two services: direct access to the computer's main + * memory (RAM), and allocation and recycling of memory blocks. The Hack RAM + * consists of 32,768 words, each holding a 16-bit binary number. + */ +class Memory { + static Array memory; + static Array heap; + static int first; + + /** Initializes the class. */ + function void init() { + let memory = 0; + let heap = 2048; + let heap[0] = -1; + let heap[1] = 14334; + return; + } + + /** Returns the RAM value at the given address. */ + function int peek(int address) { + return memory[address]; + } + + /** Sets the RAM value at the given address to the given value. */ + function void poke(int address, int value) { + let memory[address] = value; + return; + } + + /** Finds an available RAM block of the given size and returns + * a reference to its base address. */ + function int alloc(int size) { + var int current; + var int size2; + var int newLast; + let current = 0; + let size2 = size + 2; + while ((current > -1) & (heap[current + 1] < size2)) { + let current = heap[current]; + } + if (current = -1) { + do String.println("Insufficient space for allocation!"); + do Sys.error(1); + return -1; + } else { + let heap[current + 1] = heap[current + 1] - size2; + let newLast = current + heap[current + 1] + 2; + let heap[newLast] = heap[current]; + let heap[current] = newLast; + let heap[newLast + 1] = size; + return heap + newLast + 2; + } + } + + /** De-allocates the given object (cast as an array) by making + * it available for future allocations. */ + function void deAlloc(Array o) { + var int oBase; + var int current; + var int prev; + let prev = 0; + let current = heap[prev]; + let oBase = o - heap - 2; + while ((current > -1) & (~(current = oBase))){ + let prev = current; + let current = heap[current]; + } + if (current = -1) { + do String.println("The impossible happened"); + do Sys.error(1); + return; + } else { + let heap[prev] = heap[current]; + let heap[prev + 1] = heap[prev] - prev - 2; + return; + } + } +} diff --git a/projects/12/MemoryTest/Memory.vm b/projects/12/MemoryTest/Memory.vm new file mode 100644 index 0000000..c7410fc --- /dev/null +++ b/projects/12/MemoryTest/Memory.vm @@ -0,0 +1,362 @@ +function Memory.init 0 +push constant 0 +pop static 0 +push constant 2048 +pop static 1 +push constant 0 +push static 1 +add +push constant 1 +neg +pop temp 0 +pop pointer 1 +push temp 0 +pop that 0 +push constant 1 +push static 1 +add +push constant 14334 +pop temp 0 +pop pointer 1 +push temp 0 +pop that 0 +push constant 0 +return +function Memory.peek 0 +push argument 0 +push static 0 +add +pop pointer 1 +push that 0 +return +function Memory.poke 0 +push argument 0 +push static 0 +add +push argument 1 +pop temp 0 +pop pointer 1 +push temp 0 +pop that 0 +push constant 0 +return +function Memory.alloc 3 +push constant 0 +pop local 0 +push argument 0 +push constant 2 +add +pop local 1 +label WHILE_EXP0 +push local 0 +push constant 1 +neg +gt +push local 0 +push constant 1 +add +push static 1 +add +pop pointer 1 +push that 0 +push local 1 +lt +and +not +if-goto WHILE_END0 +push local 0 +push static 1 +add +pop pointer 1 +push that 0 +pop local 0 +goto WHILE_EXP0 +label WHILE_END0 +push local 0 +push constant 1 +neg +eq +if-goto IF_TRUE0 +goto IF_FALSE0 +label IF_TRUE0 +push constant 34 +call String.new 1 +push constant 73 +call String.appendChar 2 +push constant 110 +call String.appendChar 2 +push constant 115 +call String.appendChar 2 +push constant 117 +call String.appendChar 2 +push constant 102 +call String.appendChar 2 +push constant 102 +call String.appendChar 2 +push constant 105 +call String.appendChar 2 +push constant 99 +call String.appendChar 2 +push constant 105 +call String.appendChar 2 +push constant 101 +call String.appendChar 2 +push constant 110 +call String.appendChar 2 +push constant 116 +call String.appendChar 2 +push constant 32 +call String.appendChar 2 +push constant 115 +call String.appendChar 2 +push constant 112 +call String.appendChar 2 +push constant 97 +call String.appendChar 2 +push constant 99 +call String.appendChar 2 +push constant 101 +call String.appendChar 2 +push constant 32 +call String.appendChar 2 +push constant 102 +call String.appendChar 2 +push constant 111 +call String.appendChar 2 +push constant 114 +call String.appendChar 2 +push constant 32 +call String.appendChar 2 +push constant 97 +call String.appendChar 2 +push constant 108 +call String.appendChar 2 +push constant 108 +call String.appendChar 2 +push constant 111 +call String.appendChar 2 +push constant 99 +call String.appendChar 2 +push constant 97 +call String.appendChar 2 +push constant 116 +call String.appendChar 2 +push constant 105 +call String.appendChar 2 +push constant 111 +call String.appendChar 2 +push constant 110 +call String.appendChar 2 +push constant 33 +call String.appendChar 2 +call String.println 1 +pop temp 0 +push constant 1 +call Sys.error 1 +pop temp 0 +push constant 1 +neg +return +goto IF_END0 +label IF_FALSE0 +push local 0 +push constant 1 +add +push static 1 +add +push local 0 +push constant 1 +add +push static 1 +add +pop pointer 1 +push that 0 +push local 1 +sub +pop temp 0 +pop pointer 1 +push temp 0 +pop that 0 +push local 0 +push local 0 +push constant 1 +add +push static 1 +add +pop pointer 1 +push that 0 +add +push constant 2 +add +pop local 2 +push local 2 +push static 1 +add +push local 0 +push static 1 +add +pop pointer 1 +push that 0 +pop temp 0 +pop pointer 1 +push temp 0 +pop that 0 +push local 0 +push static 1 +add +push local 2 +pop temp 0 +pop pointer 1 +push temp 0 +pop that 0 +push local 2 +push constant 1 +add +push static 1 +add +push argument 0 +pop temp 0 +pop pointer 1 +push temp 0 +pop that 0 +push static 1 +push local 2 +add +push constant 2 +add +return +label IF_END0 +function Memory.deAlloc 3 +push constant 0 +pop local 2 +push local 2 +push static 1 +add +pop pointer 1 +push that 0 +pop local 1 +push argument 0 +push static 1 +sub +push constant 2 +sub +pop local 0 +label WHILE_EXP0 +push local 1 +push constant 1 +neg +gt +push local 1 +push local 0 +eq +not +and +not +if-goto WHILE_END0 +push local 1 +pop local 2 +push local 1 +push static 1 +add +pop pointer 1 +push that 0 +pop local 1 +goto WHILE_EXP0 +label WHILE_END0 +push local 1 +push constant 1 +neg +eq +if-goto IF_TRUE0 +goto IF_FALSE0 +label IF_TRUE0 +push constant 23 +call String.new 1 +push constant 84 +call String.appendChar 2 +push constant 104 +call String.appendChar 2 +push constant 101 +call String.appendChar 2 +push constant 32 +call String.appendChar 2 +push constant 105 +call String.appendChar 2 +push constant 109 +call String.appendChar 2 +push constant 112 +call String.appendChar 2 +push constant 111 +call String.appendChar 2 +push constant 115 +call String.appendChar 2 +push constant 115 +call String.appendChar 2 +push constant 105 +call String.appendChar 2 +push constant 98 +call String.appendChar 2 +push constant 108 +call String.appendChar 2 +push constant 101 +call String.appendChar 2 +push constant 32 +call String.appendChar 2 +push constant 104 +call String.appendChar 2 +push constant 97 +call String.appendChar 2 +push constant 112 +call String.appendChar 2 +push constant 112 +call String.appendChar 2 +push constant 101 +call String.appendChar 2 +push constant 110 +call String.appendChar 2 +push constant 101 +call String.appendChar 2 +push constant 100 +call String.appendChar 2 +call String.println 1 +pop temp 0 +push constant 1 +call Sys.error 1 +pop temp 0 +push constant 0 +return +goto IF_END0 +label IF_FALSE0 +push local 2 +push static 1 +add +push local 1 +push static 1 +add +pop pointer 1 +push that 0 +pop temp 0 +pop pointer 1 +push temp 0 +pop that 0 +push local 2 +push constant 1 +add +push static 1 +add +push local 2 +push static 1 +add +pop pointer 1 +push that 0 +push local 2 +sub +push constant 2 +sub +pop temp 0 +pop pointer 1 +push temp 0 +pop that 0 +push constant 0 +return +label IF_END0 diff --git a/projects/12/MemoryTest/MemoryTest.out b/projects/12/MemoryTest/MemoryTest.out new file mode 100644 index 0000000..8259ed2 --- /dev/null +++ b/projects/12/MemoryTest/MemoryTest.out @@ -0,0 +1,2 @@ +|RAM[8000]|RAM[8001]|RAM[8002]|RAM[8003]|RAM[8004]|RAM[8005]| +| 333 | 334 | 222 | 122 | 100 | 10 | -- cgit v1.2.3