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module Suem (Config(..), ConfigSocket(..), suem) where
import qualified Data.ByteString as B
import Data.Word
data Registers = Registers {
pc :: Word32,
sr :: Word16,
drs :: [Word32], -- d0 to d7
ars :: [Word32], -- a0 to a6
usp :: Word32, -- this is a7 in user mode
ssp :: Word32 -- this is a7 in supermode
}
data Machine = Machine {
regs :: Registers,
ram :: B.ByteString,
rom :: B.ByteString
}
getbyte :: Machine -> Int -> Word8
getbyte m a | a < 0x8 = B.index (rom m) a
| a < 0x7e0000 = if B.length (ram m) >= a then B.index (ram m) a else 0
| a < 0x800000 = B.index (rom m) (a - 0x7e0000)
| otherwise = 0
data ConfigSocket = ConfigInet String | ConfigUnix String
data Config = Config Int -- frequence
Int -- size of RAM
FilePath -- path to ROM
(Maybe ConfigSocket)
(Maybe ConfigSocket)
(Maybe ConfigSocket)
(Maybe ConfigSocket)
(Maybe ConfigSocket)
(Maybe ConfigSocket)
(Maybe ConfigSocket)
(Maybe ConfigSocket)
printmachine :: Machine -> IO ()
printmachine _ = putStrLn "Machine created."
suem :: Config -> IO ()
suem (Config _ ramsize rompath _ _ _ _ _ _ _ _) = do
romdata <- B.readFile rompath
printmachine (Machine regs ramdata romdata)
where ramdata = (B.replicate ramsize 0)
regs = (Registers 0 0 (replicate 8 0) (replicate 7 0) 0 0)
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