POST CODE MASTER Version 1.05 浜様様様様様様様様様様様様� INFORMATION SCREEN 突様様様様様様様様様様様様融 � � � POST CODE MASTER � � � � By: � � � � MicroSystems Development, Inc. � � 4100 Moorpark Ave. Suite #104 � � San Jose, CA 95117 USA � � � � Phone: (408)296-4000 � � FAX: 408-296-5877 � � � � � � 1.0 WHAT ARE POST CODES? � � � � POST is an acronym which stands for Power On Self Test. This � � is a procedure that the internal Basic Input Output Software, � � or BIOS of a PC performs every time it is powered on. The � � software checks, tests and initializes various hardware � � subsystems. Before entering each step, the BIOS writes a 2 � � digit indentifying code to an external address. This code is � � commonly referred to as a POST code. The early IBM PC and XT � � computer BIOS's did not generate these codes, but AT class � � (286, 386, and 486) computers do. IBM compatible computer � � makers usually use a BIOS from a third party, such as one of � � the ones listed in the BIOS manufacturer list in this program. � � When one of the tests fails, the last POST code generated will � � indicate the failure. � � � � � � 2.0 WHAT ARE BEEP CODES? � � � � In addition to the POST codes, many BIOS's generate different � � types of beeps on the PC's speaker. The type and number of � � In addition to the POST codes, many BIOS's generate different � � types of beeps on the PC's speaker. The type and number of � � beeps indicate what component of the system has failed. This � � will give you an indication of a failure even when other � � critical components of the system do not work. Sometimes beep � � codes are associated with a POST codes also, but even BIOS's � � that do not generate POST codes, may generate beep codes. � � � � Some beep codes are simply a certain number of beeps and are � � listed as 1 beep, 2 beeps, etc. Some are a combination of low � � and high tones, and some are a series of long and short beeps. � � Still others are a series of beeps and pauses. These are shown � � as 3-2-1, which means 3 beeps, pause, 2 beeps, pause, 1 beep. � � � � � � 3.0 WHAT IS POST CODE MASTER? � � � � POST CODE MASTER consists of both a software and a hardware � � product. The software portion is this program which guides � � you through a database of the POST and beep codes that are � � generated by various BIOS manufacturers. POST CODE MASTER � � hardware is a plug in card which displays the POST codes � � generated by the BIOS. � � � � If you are trying to repair or troubleshoot a system, insert � � the POST CODE MASTER display card in any open slot, and turn � � on the power to the PC. The various POST Codes will be shown � � as the BIOS performs its self tests. If a test does not pass � � the BIOS will stop, and the last code that is displayed will � � indicate the cause. Just look up its meaning in this database � � to pinpoint the problem. � � � � Software hints: If you are unsure of the type of BIOS in the � � system, select the code in question, then select the BIOS � � window and compare the descriptions of that code for different � � manufacturers. To locate a code quickly, select the POST code � � window and type the code using the keyboard. If the code is � � not used by a particular BIOS, it will show "Not Defined". � � � � The POST CODE MASTER display card contains two 7-segment LED � � displays which show the POST code exactly as they are shown by � � this program. It also has 4 LED indicators to detect the � � presence of +/- 5 volts and +/- 12 volts, to help identify � � power supply problems. � � � � � � 敖陳陳陳陳陳陳陳陳陳陳陳陳陳陳陳陳陳陳朕 � � � +5 -5 +12 -12 敖� 敖� � 敖陳 � � � o o o o 団� 団� � � � � � 青� 青� 突� � � � � � � � � P O S T C O D E M A S T E R � � � � � � � � � � by � � � � � � � � � � MicroSystems Development � � � � � � � � � � 突� � � � � � � � � 敖陳陳潰 � � � � � � � � � � � � � � � � � � � � � � � 青陳陳陳陳陳陳陳陳陳陳陳陳陳陳陳� � � � � � Figure 1. The POST CODE MASTER Display Card � � � � The POST CODE MASTER display card is a low cost troubleshooting � � tool that will pay for itself the first time it is used! � � � � � � � � COPYRIGHT NOTICE � � � � The screen format and method of data presentation used in this � � program is a copyright of MicroSystems Development and may not � � be copied or reproduced. � � � � You may however, copy and distribute unmodified copies of � � this program freely, provided that you charge no more than a � � nominal fee and it is not sold or distributed in conjunction � � with any other product. � � � � � � DISCLAIMER � � � � The information contained in this program is believed to be � � accurate and was obtained from reliable sources, however, this � � program is provided "as is" without warranty of any kind, � � either expressed or implied, including, but not limited to the � � implied warranties of merchantability and fitness for a � � particular purpose. � � � � � � � � TRADEMARKS � � � � 486 is a trademark of Intel Coporation. � � � � AMI is a trademark of American Megatrends, Inc. � � � � Award is a trademark of Award Software, Inc. � � � � COMPAQ is a trademark of Compaq Computer Corporation. � � � � IBM, PC, XT, and AT are trademarks of International Business � � Machines, Inc. � � � � MR BIOS is a trademark of Microid Research. � � � � Phoenix is a trademark of Phoenix Technologies, Inc. � � � � POST CODE MASTER is a trademark of MicroSystems Development. � � � � Quadtel is a trademark of Quadtel Corporation. � � � � *** END OF INFORMATION SCREEN *** � � � 藩様様様様様様様様様様様様様様様様様様様様様様様様様様様様様様様様様様様様様�