Safe Haskell	None
Language	Haskell2010

Nes.Memory

Synopsis

newMemory :: IO MemoryPointer
memorySize :: Addr
newtype Byte = Byte {
- unByte :: Word8
}
newtype Addr = Addr {
- unAddr :: Word16
}
byteToAddr :: Byte -> Addr
bytesToAddr :: Byte -> Byte -> Addr
negateByte :: Byte -> Byte
byteToInt :: Byte -> Int
addrToInt :: Addr -> Int
unsafeAddrToByte :: Addr -> Byte
type MemoryPointer = ForeignPtr ()
class MemoryInterface a (m :: Type -> Type) where
- readByte :: Addr -> a -> m Byte
- readAddr :: Addr -> a -> m Addr
- writeByte :: Byte -> Addr -> a -> m ()
- writeAddr :: Addr -> Addr -> a -> m ()

Documentation

newMemory :: IO MemoryPointer Source #

Creates a new memory slot

memorySize :: Addr Source #

The size of RAM, in bytes

Equivalent to 64 KiB

newtype Byte Source #

Constructors

Byte
Fields unByte :: Word8

Instances

Instances details

Bits Byte Source #
Instance details Defined in Nes.Memory Methods (.&.) :: Byte -> Byte -> Byte # (.\|.) :: Byte -> Byte -> Byte # xor :: Byte -> Byte -> Byte # complement :: Byte -> Byte # shift :: Byte -> Int -> Byte # rotate :: Byte -> Int -> Byte # zeroBits :: Byte # bit :: Int -> Byte # setBit :: Byte -> Int -> Byte # clearBit :: Byte -> Int -> Byte # complementBit :: Byte -> Int -> Byte # testBit :: Byte -> Int -> Bool # bitSizeMaybe :: Byte -> Maybe Int # bitSize :: Byte -> Int # isSigned :: Byte -> Bool # shiftL :: Byte -> Int -> Byte # unsafeShiftL :: Byte -> Int -> Byte # shiftR :: Byte -> Int -> Byte # unsafeShiftR :: Byte -> Int -> Byte # rotateL :: Byte -> Int -> Byte # rotateR :: Byte -> Int -> Byte # popCount :: Byte -> Int #
Num Byte Source #
Instance details Defined in Nes.Memory Methods (+) :: Byte -> Byte -> Byte # (-) :: Byte -> Byte -> Byte # (*) :: Byte -> Byte -> Byte # negate :: Byte -> Byte # abs :: Byte -> Byte # signum :: Byte -> Byte # fromInteger :: Integer -> Byte #
Show Byte Source #
Instance details Defined in Nes.Memory Methods showsPrec :: Int -> Byte -> ShowS # show :: Byte -> String # showList :: [Byte] -> ShowS #
Eq Byte Source #
Instance details Defined in Nes.Memory Methods (==) :: Byte -> Byte -> Bool # (/=) :: Byte -> Byte -> Bool #
Ord Byte Source #
Instance details Defined in Nes.Memory Methods compare :: Byte -> Byte -> Ordering # (<) :: Byte -> Byte -> Bool # (<=) :: Byte -> Byte -> Bool # (>) :: Byte -> Byte -> Bool # (>=) :: Byte -> Byte -> Bool # max :: Byte -> Byte -> Byte # min :: Byte -> Byte -> Byte #

newtype Addr Source #

Constructors

Addr
Fields unAddr :: Word16

Instances

Instances details

Bits Addr Source #
Instance details Defined in Nes.Memory Methods (.&.) :: Addr -> Addr -> Addr # (.\|.) :: Addr -> Addr -> Addr # xor :: Addr -> Addr -> Addr # complement :: Addr -> Addr # shift :: Addr -> Int -> Addr # rotate :: Addr -> Int -> Addr # zeroBits :: Addr # bit :: Int -> Addr # setBit :: Addr -> Int -> Addr # clearBit :: Addr -> Int -> Addr # complementBit :: Addr -> Int -> Addr # testBit :: Addr -> Int -> Bool # bitSizeMaybe :: Addr -> Maybe Int # bitSize :: Addr -> Int # isSigned :: Addr -> Bool # shiftL :: Addr -> Int -> Addr # unsafeShiftL :: Addr -> Int -> Addr # shiftR :: Addr -> Int -> Addr # unsafeShiftR :: Addr -> Int -> Addr # rotateL :: Addr -> Int -> Addr # rotateR :: Addr -> Int -> Addr # popCount :: Addr -> Int #
Ix Addr Source #
Instance details Defined in Nes.Memory Methods range :: (Addr, Addr) -> [Addr] # index :: (Addr, Addr) -> Addr -> Int # unsafeIndex :: (Addr, Addr) -> Addr -> Int # inRange :: (Addr, Addr) -> Addr -> Bool # rangeSize :: (Addr, Addr) -> Int # unsafeRangeSize :: (Addr, Addr) -> Int #
Num Addr Source #
Instance details Defined in Nes.Memory Methods (+) :: Addr -> Addr -> Addr # (-) :: Addr -> Addr -> Addr # (*) :: Addr -> Addr -> Addr # negate :: Addr -> Addr # abs :: Addr -> Addr # signum :: Addr -> Addr # fromInteger :: Integer -> Addr #
Show Addr Source #
Instance details Defined in Nes.Memory Methods showsPrec :: Int -> Addr -> ShowS # show :: Addr -> String # showList :: [Addr] -> ShowS #
Eq Addr Source #
Instance details Defined in Nes.Memory Methods (==) :: Addr -> Addr -> Bool # (/=) :: Addr -> Addr -> Bool #
Ord Addr Source #
Instance details Defined in Nes.Memory Methods compare :: Addr -> Addr -> Ordering # (<) :: Addr -> Addr -> Bool # (<=) :: Addr -> Addr -> Bool # (>) :: Addr -> Addr -> Bool # (>=) :: Addr -> Addr -> Bool # max :: Addr -> Addr -> Addr # min :: Addr -> Addr -> Addr #

byteToAddr :: Byte -> Addr Source #

bytesToAddr :: Byte -> Byte -> Addr Source #

First byte is low-end, second is high-end

negateByte :: Byte -> Byte Source #

Safely negates a byte, handles underflow

byteToInt :: Byte -> Int Source #

addrToInt :: Addr -> Int Source #

unsafeAddrToByte :: Addr -> Byte Source #

Unsafe: Casts a Word16 to Word8

type MemoryPointer = ForeignPtr () Source #

The pointer used to interact with memory

class MemoryInterface a (m :: Type -> Type) where Source #

Methods for interfaces that exposes memory

Methods

readByte :: Addr -> a -> m Byte Source #

Reads a single byte

readAddr :: Addr -> a -> m Addr Source #

Reads two bytes packed in little endian

writeByte :: Byte -> Addr -> a -> m () Source #

Writes a single byte

writeAddr :: Addr -> Addr -> a -> m () Source #

Writes two bytes packed in little endian

the first argument is the address to write the second is the destination

Instances

Instances details

MemoryInterface () (Bus r) Source #
Instance details Defined in Nes.Bus.Monad Methods readByte :: Addr -> () -> Bus r Byte Source # readAddr :: Addr -> () -> Bus r Addr Source # writeByte :: Byte -> Addr -> () -> Bus r () Source # writeAddr :: Addr -> Addr -> () -> Bus r () Source #
MemoryInterface () (CPU r) Source #
Instance details Defined in Nes.CPU.Monad Methods readByte :: Addr -> () -> CPU r Byte Source # readAddr :: Addr -> () -> CPU r Addr Source # writeByte :: Byte -> Addr -> () -> CPU r () Source # writeAddr :: Addr -> Addr -> () -> CPU r () Source #
MonadIO m => MemoryInterface (ForeignPtr a) m Source #
Instance details Defined in Nes.Memory.Unsafe Methods readByte :: Addr -> ForeignPtr a -> m Byte Source # readAddr :: Addr -> ForeignPtr a -> m Addr Source # writeByte :: Byte -> Addr -> ForeignPtr a -> m () Source # writeAddr :: Addr -> Addr -> ForeignPtr a -> m () Source #
MonadIO m => MemoryInterface (Ptr a) m Source #	Highly unsafe instance that uses pointers directly. No bound checks are done.
Instance details Defined in Nes.Memory.Unsafe Methods readByte :: Addr -> Ptr a -> m Byte Source # readAddr :: Addr -> Ptr a -> m Addr Source # writeByte :: Byte -> Addr -> Ptr a -> m () Source # writeAddr :: Addr -> Addr -> Ptr a -> m () Source #