Z80: ISA: Fix Show to comply with dZ80

diff --git a/src/Z80/ISA.hs b/src/Z80/ISA.hs
index c4cf4ff..fbb98e6 100644 (file)
--- a/src/Z80/ISA.hs
+++ b/src/Z80/ISA.hs
@@ -338,10 +338,10 @@ instance Show Instruction where
     CPD       -> "cpd"
     CPDR      -> "cpdr"
     -- 8-bit arithmetic group
-    ADD_A_S as  -> "add " ++ show as
-    ADC_A_S as  -> "adc " ++ show as
+    ADD_A_S as  -> "add a," ++ show as
+    ADC_A_S as  -> "adc a," ++ show as
     SUB_A_S as  -> "sub " ++ show as
-    SBC_A_S as  -> "sbc " ++ show as
+    SBC_A_S as  -> "sbc a," ++ show as
     AND_A_S as  -> "and " ++ show as
     OR_A_S  as  -> "or " ++ show as
     XOR_A_S as  -> "xor " ++ show as