diff --git a/src/cpu.c b/src/cpu.c
index a397708..837b64f 100644
--- a/src/cpu.c
+++ b/src/cpu.c
@@ -32,22 +32,22 @@ static struct cpu_type	cpu_type_c64dtv2	= {
 };
 static struct cpu_type	cpu_type_65c02	= {
 	keyword_is_65c02_mnemo,
-	CPUFLAG_WARN_ABOUT_FF_PTR,	// TODO - remove this? check datasheets/realhw!
+	CPUFLAG_WARN_ABOUT_FF_PTR,	// from WDC docs
 	234	// !align fills with "NOP"
 };
 static struct cpu_type	cpu_type_r65c02	= {
 	keyword_is_r65c02_mnemo,
-	CPUFLAG_WARN_ABOUT_FF_PTR,	// TODO - remove this? check datasheets/realhw!
+	CPUFLAG_WARN_ABOUT_FF_PTR,	// from WDC docs
 	234	// !align fills with "NOP"
 };
 static struct cpu_type	cpu_type_w65c02	= {
 	keyword_is_w65c02_mnemo,
-	CPUFLAG_WARN_ABOUT_FF_PTR,	// TODO - remove this? check datasheets/realhw!
+	CPUFLAG_WARN_ABOUT_FF_PTR,	// from WDC docs
 	234	// !align fills with "NOP"
 };
 static struct cpu_type	cpu_type_65816	= {
 	keyword_is_65816_mnemo,
-	// TODO - what about CPUFLAG_WARN_ABOUT_FF_PTR? does this depend on native/emulation mode?
+	// TODO - what about CPUFLAG_WARN_ABOUT_FF_PTR? only needed for old opcodes in emulation mode!
 	CPUFLAG_SUPPORTSLONGREGS,	// allows A and XY to be 16bits wide
 	234	// !align fills with "NOP"
 };
diff --git a/src/mnemo.c b/src/mnemo.c
index ee19c52..599f25c 100644
--- a/src/mnemo.c
+++ b/src/mnemo.c
@@ -73,7 +73,7 @@ enum mnemogroup {
 	GROUP_REL16_2,		// 16bit relative to pc+2			Byte value = opcode
 	GROUP_REL16_3,		// 16bit relative to pc+3			Byte value = opcode
 	GROUP_BOTHMOVES,	// the "move" commands MVP and MVN		Byte value = opcode
-	GROUP_ZPONLY,		// rmb0..7 and smb0..7				Byte value = opcode	FIXME - use for IDX16COP,IDXeDEW,IDXeINW as well!
+	GROUP_ZPONLY,		// rmb0..7 and smb0..7				Byte value = opcode	FIXME - use for IDXeDEW,IDXeINW as well!
 	GROUP_PREFIX,		// NOP on m65 (throws error)			Byte value = opcode
 };