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+;; -----------------------------------------------------------------------
+;;
+;; Copyright 1994-2008 H. Peter Anvin - All Rights Reserved
+;;
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, Inc., 53 Temple Place Ste 330,
+;; Boston MA 02111-1307, USA; either version 2 of the License, or
+;; (at your option) any later version; incorporated herein by reference.
+;;
+;; -----------------------------------------------------------------------
+
+;;
+;; writehex.inc
+;;
+;; Write hexadecimal numbers to the console
+;;
+
+ section .text
+;
+; writehex[248]: Write a hex number in (AL, AX, EAX) to the console
+;
+writehex2:
+ pushfd
+ pushad
+ rol eax,24
+ mov cx,2
+ jmp short writehex_common
+writehex4:
+ pushfd
+ pushad
+ rol eax,16
+ mov cx,4
+ jmp short writehex_common
+writehex8:
+ pushfd
+ pushad
+ mov cx,8
+writehex_common:
+.loop: rol eax,4
+ push eax
+ and al,0Fh
+ cmp al,10
+ jae .high
+.low: add al,'0'
+ jmp short .ischar
+.high: add al,'A'-10
+.ischar: call writechr
+ pop eax
+ loop .loop
+ popad
+ popfd
+ ret