Z80: ISA: Add Show instances for types

diff --git a/src/Z80/ISA.hs b/src/Z80/ISA.hs
index b789f71..4d00c23 100644 (file)
--- a/src/Z80/ISA.hs
+++ b/src/Z80/ISA.hs
@@ -7,13 +7,13 @@ import Data.Int
 data Reg = B | C | D | E | H | L | PHL | A deriving (Show, Eq)
 
 -- reg pairs specified in the z80 manual
-data BC = BC
-data DE = DE
-data HL = HL
-data SP = SP
-data AF = AF
-data IX = IX
-data IY = IY
+data BC = BC deriving Show
+data DE = DE deriving Show
+data HL = HL deriving Show
+data SP = SP deriving Show
+data AF = AF deriving Show
+data IX = IX deriving Show
+data IY = IY deriving Show
 
 -- sets of reg pairs used in the z80 manual
 data RegPair a b c d = R1 a | R2 b | R3 c | R4 d deriving (Show, Eq)
@@ -30,6 +30,7 @@ data ArithSpec =
   | AOp_PHL
   | AOp_PIX Int8
   | AOp_PIY Int8
+  deriving Show
 
 -- spec for shift and rotate instructions
 data SRSpec =
@@ -37,6 +38,7 @@ data SRSpec =
   | SROp_PHL
   | SROp_PIX Int8
   | SROp_PIY Int8
+  deriving Show
 
 -- spec for bitwise instructions
 data BitwiseSpec =
@@ -44,6 +46,7 @@ data BitwiseSpec =
   | BOp_PHL
   | BOp_PIX Int8
   | BOp_PIY Int8
+  deriving Show
 
 -- condition codes for jump/call instructions
 data Cond =
@@ -55,6 +58,7 @@ data Cond =
   | CParityEven
   | CSignPositive
   | CSignNegative
+  deriving Show
 
 -- instructions
 data Instruction =
@@ -216,3 +220,4 @@ data Instruction =
   | OUTD
   | OUTDR
   | IllegalInstruction String
+  deriving Show