Execute Computer/Zero: Difference between revisions
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Compiled 33 lines. |
Compiled 33 lines. |
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Program completed with accumulator value 0. |
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</pre> |
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=== Interpreter version === |
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<lang ruby>function interpret(text::String) |
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ip, accum, isready, ram = 1, 0, true, zeros(UInt8, 32) |
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NOP() = (ip = mod1(ip + 1, 32)) |
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LDA() = (accum = ram[ram[ip] & 0b00011111 + 1]; ip = mod1(ip + 1, 32)) |
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STA() = (ram[ram[ip] & 0b00011111 + 1] = accum; ip = mod1(ip + 1, 32)) |
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ADD() = (accum += ram[ram[ip] & 0b00011111 + 1]; ip = mod1(ip + 1, 32)) |
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SUB() = (accum -= ram[ram[ip] & 0b00011111 + 1]; ip = mod1(ip + 1, 32)) |
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BRZ() = (ip = (accum == 0) ? ram[ip] & 0b00011111 + 1 : mod1(ip + 1, 32)) |
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JMP() = (ip = ram[ip] & 0b00011111 + 1) |
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STP() = (println("Program completed with accumulator value $(accum).\n"); isready = false) |
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step = [NOP, LDA, STA, ADD, SUB, BRZ, JMP, STP] |
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assemblywords = Dict(s => i - 1 for (i, s) in pairs(string.(step))) |
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for (i, line) in pairs(strip.(split(text, "\n"))) |
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i > 32 && break |
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if isempty(line) |
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ram[i] = 0 |
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elseif (m = match(r"(\w\w\w)\s+(\d\d?)", line)) != nothing |
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ram[i] = UInt8((assemblywords[m.captures[1]] << 5) | parse(UInt8, m.captures[2])) |
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elseif (m = match(r"(\w\w\w)", line)) != nothing |
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ram[i] = UInt8(assemblywords[m.match] << 5) |
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elseif (m = match(r"\d\d?", line)) != nothing |
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ram[i] = parse(UInt8, m.match) |
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else |
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error("Compilation error at line $i: error parsing <$line>") |
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end |
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end |
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while isready |
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step[ram[ip] >> 5 + 1]() |
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end |
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return accum |
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end |
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const testprograms = [ |
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""" |
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LDA 3 |
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ADD 4 |
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STP |
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2 |
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2 |
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""", |
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""" |
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LDA 12 |
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ADD 10 |
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STA 12 |
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LDA 11 |
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SUB 13 |
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STA 11 |
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BRZ 8 |
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JMP 0 |
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LDA 12 |
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STP |
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8 |
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7 |
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0 |
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1 |
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""", |
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""" |
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LDA 14 |
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STA 15 |
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ADD 13 |
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STA 14 |
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LDA 15 |
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STA 13 |
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LDA 16 |
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SUB 17 |
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BRZ 11 |
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STA 16 |
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JMP 0 |
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LDA 14 |
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STP |
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1 |
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1 |
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0 |
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8 |
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1 |
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""", |
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""" |
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LDA 13 |
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ADD 15 |
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STA 5 |
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ADD 16 |
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STA 7 |
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NOP |
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STA 14 |
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NOP |
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BRZ 11 |
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STA 15 |
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JMP 0 |
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LDA 14 |
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STP |
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LDA 0 |
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0 |
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28 |
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1 |
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6 |
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0 |
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2 |
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26 |
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5 |
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20 |
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3 |
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30 |
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1 |
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22 |
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4 |
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24 |
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""", |
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""" |
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0 |
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0 |
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STP |
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NOP |
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LDA 3 |
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SUB 29 |
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BRZ 18 |
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LDA 3 |
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STA 29 |
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BRZ 14 |
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LDA 1 |
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ADD 31 |
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STA 1 |
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JMP 2 |
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LDA 0 |
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ADD 31 |
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STA 0 |
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JMP 2 |
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LDA 3 |
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STA 29 |
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LDA 0 |
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ADD 30 |
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ADD 3 |
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STA 0 |
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LDA 1 |
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ADD 30 |
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ADD 3 |
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STA 1 |
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JMP 2 |
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0 |
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1 |
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3 |
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""" |
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] |
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for t in testprograms |
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interpret(t) |
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end |
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</lang>{{out}} |
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<pre> |
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Program completed with accumulator value 4. |
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Program completed with accumulator value 56. |
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Program completed with accumulator value 55. |
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Program completed with accumulator value 6. |
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Program completed with accumulator value 0. |
Program completed with accumulator value 0. |
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</pre> |
</pre> |
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