.BIOS

term.setBackgroundColor(colors.gray)
local function ERR(CODE,DESC)
    term.setCursorPos(1,1)
    term.setBackgroundColor(colors.red)
    term.clear()
    term.setTextColor(colors.white)
    print("AIOS BIOS OCCURED AN ERROR")
    print("--------------------------")
    print(DESC)
    print("--------------------------")
    print("The BIOS left the following error")
    print(CODE)
    print("COMMON CODE LETTERS")
    print("E > EXCPECTED")
    print("U > UNEXCPECTED")
    print("M >> MAIN")
    print("U >> UNKNOWN")
    print("--------------------------")
    print("AIOS BIOS WILL NOW ATTEMPT TO REBOOT")
    sleep(10)
    os.reboot()
end
local I = 0
local J = 0
local L = 1
W,H = term.getSize()
while true do
    I = I + 1
    J = J + 1
    if L == 40 then
        break
    end
    if I == 256 then
        I = 0
    else
        term.setCursorPos(L,J)
        print(string.char(I))
        if J == 10 then
            L = L + 1
            J = 0
            sleep(0)
        end
    end
end
sleep(0.5)
term.setBackgroundColor(colors.black)
term.setTextColor(colors.lime)
term.setCursorPos(1,1)
term.clear()
local function Centerd(s,oH)
    term.setCursorPos(((W/2)-(string.len(s)/2)),((H/2)-oH))
end
Centerd("          ",0)
VER = "V3.00"
print("AIOS "..VER)
Centerd("                           ",-5)
print("strike space to enter bios!")
Centerd("                ",-4)
print("Strike any key or")
E,KEY = os.pullEvent()
if KEY == string.byte(" ") then
    term.clear()
    term.setCursorPos(1,1)
    print("LOADING AiOs BIOS "..VER.." MENU")
    local function GUI(Options,Text)
    term.setCursorPos(1,1)
    term.clear()
    for i = 1,#Options do
        term.setCursorPos(1,i*2)
        print(i..": "..Options[i])
    end
    for i = 1,#Text do
        term.setCursorPos(15,i*2)
        print(Text[i])
    end
    end
    --Op max len = 9
    Op = {"QUIT","SafeBoot","About"}
    Te = {"BOOT","security","Version | Creddits"}
    while true do
        sleep(0.25)
        GUI(Op,Te)
        sleep(0.5)
        term.setCursorPos(1,H-1)
        print("Option [#]? ")
        term.setCursorPos(13,H-1)
        local SEL = read()
        SEL = tonumber(SEL)
        if SEL == 1 then
            break
        elseif SEL == 2 then
            print("Not yet implemented")
        elseif SEL == 3 then
            term.clear()
            term.setCursorPos(1,1)
            print("AIOS BIOS "..VER.." on")
            print(os.version())
            print(os.date())
            sleep(2)
        else
            print("INVALID")
            sleep(0.5)
        end
    end
else
    if fs.exists("os") then
        shell.run("os")
    elseif fs.exists(".os") then
        shell.run(".os")
    elseif fs.exists("init.lua") then
        shell.run("init.lua")
    elseif fs.exists("init") then
        shell.run("init")
    else
        term.clear()
        term.setCursorPos(1,1)
        term.setTextColour(colors.red)
        print("No OS found")
        while true do
            print("")
            print("SHELL: ")
                 shell.run("fg "..read())
                sleep(1)
                multishell.setFocus(multishell.getCurrent())

        end
    end
end
sleep(5)
shell.run(".BIOS")
sleep(0.5)
ERR("EM01","The BIOS reached the final line")