54 lines
1.2 KiB
Lua
54 lines
1.2 KiB
Lua
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stab = {}
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stab.stack = {}
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stab.pc = 1
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stab.cins = 0
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mem = {}
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t400 = require "t400"
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while true do
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io.write("*> ")
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i=io.read()
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it = {}
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for s in i:gmatch("%S+") do it[#it+1] = s end
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if it[1] == "quit" then
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break
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elseif it[1] == "peek" then
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print(mem[tonumber(it[2])])
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elseif it[1] == "poke" then
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mem[tonumber(it[2])] = tonumber(it[3])
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elseif it[1] == "push" then
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stab.stack[#stab.stack+1] = tonumber(it[2])
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elseif it[1] == "dumpstack" then
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for k,v in ipairs(stab.stack) do print(k,v) end
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elseif it[1] == "ppc" then
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print(stab.pc)
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elseif it[1] == "spc" then
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stab.pc=tonumber(it[2])
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elseif it[1] == "step" then
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local scount = tonumber(it[2]) or 1
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for i = 1, scount do
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stab.cins = mem[stab.pc]
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stab,rw,addr,val=t400.run(stab)
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if rw == "halt" then break end
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if rw == "read" then
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stab.stack[#stab.stack+1] = mem[addr]
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elseif rw == "write" then
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mem[addr] = dat
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end
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end
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elseif it[1] == "load" then
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local f,e = io.open(it[2])
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if f == nil then
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print("Error: "..e)
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else
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local n = tonumber(it[3]) or 0
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local c = f:read("*a")
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f:close()
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for v in c:gmatch("%S+") do
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mem[n] = tonumber(v) or 0
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n = n + 1
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end
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end
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end
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end
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