diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 18a5911a6e..bdaaef3a09 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,9 @@
+Mon Nov 15 19:34:58 1999  Donald Lindsay  <dlindsay@cygnus.com>
+
+	* arm-dis.c (print_insn_arm): Added general purpose 'X' format.
+	* arm-opc.h (print_insn_arm): Added comment documenting
+	the 'X' format just added to arm-dis.c.
+
 1999-11-15  Gavin Romig-Koch  <gavin@cygnus.com>
 
 	* mips-opc.c (la): Create a version that just uses addiu directly.
diff --git a/opcodes/arm-dis.c b/opcodes/arm-dis.c
index 9687134b84..9c44bf87e9 100644
--- a/opcodes/arm-dis.c
+++ b/opcodes/arm-dis.c
@@ -491,6 +491,14 @@ print_insn_arm (pc, info, given)
 				    func (stream, "\t; IMBRange");
 				}
 				break;
+			      case 'X':
+				{
+				  long reg;
+				  reg = given >> bitstart;
+				  reg &= (2 << (bitend - bitstart)) - 1;
+				  func (stream, "%01x", reg & 0xf);
+				}
+				break;
 			      case 'f':
 				{
 				  long reg;
diff --git a/opcodes/arm-opc.h b/opcodes/arm-opc.h
index f49298fb0c..2ea3e13a44 100644
--- a/opcodes/arm-opc.h
+++ b/opcodes/arm-opc.h
@@ -33,6 +33,7 @@ struct thumb_opcode
    %%			%
    %<bitfield>d		print the bitfield in decimal
    %<bitfield>x		print the bitfield in hex
+   %<bitfield>X		print the bitfield as 1 hex digit without leading "0x"
    %<bitfield>r		print as an ARM register
    %<bitfield>f		print a floating point constant if >7 else a
 			floating point register