MT-test3d-tools/emut400.lua

54 lines
1.2 KiB
Lua
Raw Normal View History

2017-02-12 12:51:56 +11:00
stab = {}
stab.stack = {}
stab.pc = 1
stab.cins = 0
mem = {}
t400 = require "t400"
while true do
io.write("*> ")
i=io.read()
it = {}
for s in i:gmatch("%S+") do it[#it+1] = s end
if it[1] == "quit" then
break
elseif it[1] == "peek" then
print(mem[tonumber(it[2])])
elseif it[1] == "poke" then
mem[tonumber(it[2])] = tonumber(it[3])
elseif it[1] == "push" then
stab.stack[#stab.stack+1] = tonumber(it[2])
elseif it[1] == "dumpstack" then
for k,v in ipairs(stab.stack) do print(k,v) end
elseif it[1] == "ppc" then
print(stab.pc)
elseif it[1] == "spc" then
stab.pc=tonumber(it[2])
elseif it[1] == "step" then
local scount = tonumber(it[2]) or 1
for i = 1, scount do
stab.cins = mem[stab.pc]
stab,rw,addr,val=t400.run(stab)
if rw == "halt" then break end
if rw == "read" then
stab.stack[#stab.stack+1] = mem[addr]
elseif rw == "write" then
mem[addr] = dat
end
end
elseif it[1] == "load" then
local f,e = io.open(it[2])
if f == nil then
print("Error: "..e)
else
local n = tonumber(it[3]) or 0
local c = f:read("*a")
f:close()
for v in c:gmatch("%S+") do
mem[n] = tonumber(v) or 0
n = n + 1
end
end
end
end