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-rw-r--r--src/Instructions.hs35
1 files changed, 31 insertions, 4 deletions
diff --git a/src/Instructions.hs b/src/Instructions.hs
index 2d84597..893af76 100644
--- a/src/Instructions.hs
+++ b/src/Instructions.hs
@@ -5,6 +5,7 @@ import Prelude hiding (Word)
import Machine
import Control
import Utils
+import Data.Bits ((.&.))
import Data.IORef
@@ -21,7 +22,14 @@ doANDICCR :: Emulator ()
doANDICCR = error "ANDICCR"
doANDISR :: Emulator ()
-doANDISR = error "ANDISR"
+doANDISR = do
+ incPC
+ (src_get, src_set) <- getOp 7 4 2
+ src_val <- src_get
+ dst_val <- readSR
+ let value = (fromIntegral dst_val) .&. src_val
+ writeSR $ fromIntegral value
+-- TODO flags
doANDI :: Int -> Int -> Int -> Emulator ()
doANDI _ _ _ = error "ANDI"
@@ -155,14 +163,20 @@ doSTOP :: Emulator ()
doSTOP = error "STOP"
doRTE :: Emulator ()
-doRTE = error "RTE"
+doRTE = do
+ sp <- readA 7 4
+ writeA 7 4 (sp + 6)
+ sr <- getMemory sp 2
+ writeSR $ fromIntegral sr
+ pc <- getMemory (sp + 2) 4
+ writePC pc
doRTS :: Emulator ()
doRTS = do
sp <- readA 7 4
writeA 7 4 (sp + 4)
- addr <- getMemory sp 4
- writePC addr
+ pc <- getMemory sp 4
+ writePC pc
doTRAPV :: Emulator ()
doTRAPV = error "TRAPV"
@@ -388,3 +402,16 @@ doROXdR _ _ _ _ _ = error "ROXdR"
doROdR :: Int -> Int -> Int -> Int -> Int -> Emulator ()
doROdR _ _ _ _ _ = error "ROdR"
+
+doInterrupt :: Emulator ()
+doInterrupt = do
+ pc <- readPC
+ ihandler <- getMemory 100 4
+ writePC ihandler
+ sr <- readSR
+ setSupervisor True
+ setInterruptLevel 1
+ sp <- readA 7 4
+ writeA 7 4 (sp - 6)
+ setMemory (sp - 4) 4 pc
+ setMemory (sp - 6) 2 $ fromIntegral sr