-
Notifications
You must be signed in to change notification settings - Fork 0
/
Code.cs
51 lines (47 loc) · 2.02 KB
/
Code.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
using System.Collections.Generic;
///<summary>
///Translates the Hack Assembly mnemonics to binary machine code.
///</summary>
namespace Assembler
{
static class Code
{
static readonly Dictionary<string, string> DestCodes = new Dictionary<string, string>{
{string.Empty, "000"}, {"M", "001"}, {"D", "010"}, {"MD", "011"},
{"A", "100"}, {"AM", "101"}, {"AD", "110"}, {"AMD", "111"}
};
static readonly Dictionary<string, string> JumpCodes = new Dictionary<string, string>{
{string.Empty, "000"}, {"JGT", "001"}, {"JEQ", "010"}, {"JGE", "011"},
{"JLT", "100"}, {"JNE", "101"}, {"JLE", "110"}, {"JMP", "111"}
};
static readonly Dictionary<string, string> CompCodes = new Dictionary<string, string>{
{"0", "0101010"}, {"1", "0111111"}, {"-1", "0111010"}, {"D", "0001100"}, {"A", "0110000"},
{"!D", "0001111"}, {"!A", "0110011"}, {"-D", "0001111"}, {"-A", "0110011"}, {"D+1", "0011111"},
{"A+1", "0110111"}, {"D-1", "0001110"}, {"A-1", "0110010"}, {"D+A", "0000010"}, {"D-A", "0010011"},
{"A-D", "0000111"}, {"D&A", "0000000"}, {"D|A", "0010101"}, {"M", "1110000"}, {"!M", "1110001"},
{"-M", "1110011"}, {"M+1", "1110111"}, {"M-1", "1110010"}, {"D+M", "1000010"}, {"D-M", "1010011"},
{"M-D", "1000111"}, {"D&M", "1000000"}, {"D|M", "1010101"}
};
public static string Comp(string mnemonic)
{
if(CompCodes.TryGetValue(mnemonic, out string value))
return value;
else
return null;
}
public static string Dest(string mnemonic)
{
if(DestCodes.TryGetValue(mnemonic, out string value))
return value;
else
return null;
}
public static string Jump(string mnemonic)
{
if(JumpCodes.TryGetValue(mnemonic, out string value))
return value;
else
return null;
}
}
}