1. M5SIB_Bios.zip Driver
2. ReadMe.txt File Contents

ReadMe.txt Driver File Contents (M5SIB_Bios.zip)

Procedure:
Format a floppy as a system disk.  Copy these files to the floppy.  Make a note of the current bios settings (on the system to be updated) in a file on another computer (or scratch marks into a piece of paper, like the ancients).  Boot the system to be updated to the floppy.  Run the batch file by typing 'BiosUp.bat' to the command prompt.

Notes:
If you are not entirely certain about what you are about to do, do not do it.  You will be entirely responsible for any damage that you cause.

This update is for the Biostar M5SIB motherboard.  It updates the bios, the program that runs on the board, making the board functional.

This update should not be applied to any other boards, as they may cease to function.  (The board may then require an indentical bios chip to hot-swap with to recover from that state, which may be hard (or impossible) to find, and this procedure is scary to perform, as it can result in two dead chips instead of one).

Bios strings are 'Award Modular BIOS v4.51PG', 'BIOS Ver. 1.06f', '05/20/1999-SiS-5598-W877-2A5IIB0BC-00'.

The M5SIB is also known as the 'Pegasus', and was used by Packard Bell in their Club 30B, Club 40B, and Club 6333 systems.  Packard Bell also wrongly name this board by 'Pegase' in some places on the website.

The system in front of me is a Club, but does not have a model number.  It uses the M5SIB board.

The bios provided with this update came from this system.

The bios update offered through the Packard Bell website is an older version (and was not tested on this board, as the name Pegase was used in links leading to that update, making it possibly different, and as it was older, and this was a clients' system, making it not worth the risk).  The bios file contained in that self-extracting archive appears to be version 1.05.

This system (where version 1.06f was backed up from) is fully operational, curently running a P166MMX overclocked to 3x75=225MHz, and Windows98Se, connected to Tiscali broadband, sharing this connection from another PC via LAN.  (And the client thought of throwing it away because it is old, whereas I think it should stay as a backup, but not be used for most stuff because it is too slow).

These boards can run at up to 75MHz bus x 4.5 ratio = 337MHz, if you can find a 266MHz Socket7 cpu (4x66) or 300MHz (4.5x66), and do not mind overclocking to run at 4.5x75.

Good luck

 --jez