diff options
Diffstat (limited to 'src/Machine.hs')
| -rw-r--r-- | src/Machine.hs | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/Machine.hs b/src/Machine.hs index 22d428e..42e1c60 100644 --- a/src/Machine.hs +++ b/src/Machine.hs @@ -110,6 +110,61 @@ readA 7 = isSupervisor >>= \sup -> if sup readA _ = return $ error "Incorrect Address register read" +writeD :: Int -> Long -> Emulator () +writeD 0 r = with drs $ \rs -> do + (_,r1,r2,r3,r4,r5,r6,r7) <- readIORef rs + writeIORef rs (r,r1,r2,r3,r4,r5,r6,r7) +writeD 1 r = with drs $ \rs -> do + (r0,_,r2,r3,r4,r5,r6,r7) <- readIORef rs + writeIORef rs (r0,r,r2,r3,r4,r5,r6,r7) +writeD 2 r = with drs $ \rs -> do + (r0,r1,_,r3,r4,r5,r6,r7) <- readIORef rs + writeIORef rs (r0,r1,r,r3,r4,r5,r6,r7) +writeD 3 r = with drs $ \rs -> do + (r0,r1,r2,_,r4,r5,r6,r7) <- readIORef rs + writeIORef rs (r0,r1,r2,r,r4,r5,r6,r7) +writeD 4 r = with drs $ \rs -> do + (r0,r1,r2,r3,_,r5,r6,r7) <- readIORef rs + writeIORef rs (r0,r1,r2,r3,r,r5,r6,r7) +writeD 5 r = with drs $ \rs -> do + (r0,r1,r2,r3,r4,_,r6,r7) <- readIORef rs + writeIORef rs (r0,r0,r2,r3,r4,r,r6,r7) +writeD 6 r = with drs $ \rs -> do + (r0,r1,r2,r3,r4,r5,_,r7) <- readIORef rs + writeIORef rs (r0,r1,r2,r3,r4,r5,r,r7) +writeD 7 r = with drs $ \rs -> do + (r0,r1,r2,r3,r4,r5,r6,_) <- readIORef rs + writeIORef rs (r0,r1,r2,r3,r4,r5,r6,r) +writeD _ _ = return $ error "Incorrect Data register write" + +writeA :: Int -> Long -> Emulator () +writeA 0 r = with ars $ \rs -> do + (_,r1,r2,r3,r4,r5,r6) <- readIORef rs + writeIORef rs (r,r1,r2,r3,r4,r5,r6) +writeA 1 r = with ars $ \rs -> do + (r0,_,r2,r3,r4,r5,r6) <- readIORef rs + writeIORef rs (r0,r,r2,r3,r4,r5,r6) +writeA 2 r = with ars $ \rs -> do + (r0,r1,_,r3,r4,r5,r6) <- readIORef rs + writeIORef rs (r0,r1,r,r3,r4,r5,r6) +writeA 3 r = with ars $ \rs -> do + (r0,r1,r2,_,r4,r5,r6) <- readIORef rs + writeIORef rs (r0,r1,r2,r,r4,r5,r6) +writeA 4 r = with ars $ \rs -> do + (r0,r1,r2,r3,_,r5,r6) <- readIORef rs + writeIORef rs (r0,r1,r2,r3,r,r5,r6) +writeA 5 r = with ars $ \rs -> do + (r0,r1,r2,r3,r4,_,r6) <- readIORef rs + writeIORef rs (r0,r0,r2,r3,r4,r,r6) +writeA 6 r = with ars $ \rs -> do + (r0,r1,r2,r3,r4,r5,_) <- readIORef rs + writeIORef rs (r0,r1,r2,r3,r4,r5,r) +writeA 7 r = isSupervisor >>= \sup -> if sup + then with ssp $ \sp -> writeIORef sp r + else with usp $ \sp -> writeIORef sp r +writeA _ _ = return $ error "Incorrect Address register write" + + ------------------------------------------------------------------------------- -- Status Register Access |