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Title:    Boot Block Recovery Procedure - Micronics M54Si Motherboard
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Filename: M54SIREC.TXT
Author:   Terry Slade, Micro Firmware Technical Support
Revision: 11/21/97
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The boot block recovery code resides in a protected area of the flash
chip. This code checks for a working BIOS on every boot and will only
attempt to install a BIOS from diskette if the BIOS in the flash chip
is corrupt or missing. A black screen on powerup may indicate the
absence of a working BIOS in the flash chip. A long beep followed by
a short beep followed by a repeating pattern of three beeps indicates 
that the boot block code is looking for a recovey disk in drive A:.
The diskette drive light will also be on. NOTE - In some cases the
boot block code will not work to recover from a corrupt BIOS. In such
cases the flash chip must be removed and manually reprogrammed.

The boot block recovery procedure requires a valid recovery disk,
normally created during installation of a flash BIOS upgrade.

A BIOS recovery disk for this motherboard is available on our BBS, FTP
site, or web site. The file M54SIRD.EXE contains a self-extracting
diskette image of a recovery disk which will install the current Micron
BIOS for this board - Phoenix 4.04 M54Si-09pm.

This motherboard is identified by the Micronics part number 09-00211
silk-screened onto the back left corner of the board.

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Boot Block Recovery Procedure:
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1. Turn system off.

2. Do not move the boot block recovery jumper (W9). W9 should remain
   on pins 2-3. (This jumper would be used with an older type of boot
   block code, which was not used on this motherboard).
   There is also a jumper - W10 - used to write-protect the flash
   chip. W10 is located just to the right of the flash chip socket.
   There must be a jumper installed on W10 to allow reprogramming of
   the flash chhip. Also, this jumper should normally be left on when
   using a Plug-and-Play BIOS. (This jumper is removed to
   write-protect the flash chip).

3. Insert recovery disk.

4. Turn system on. After 15 to 25 seconds, the speaker will sound one
   long and two short beeps. The display screen will remain blank.
   The diskette drive light will come on, there will be another beep.
   In about 30 seconds, there will be four beeps to indicate that the
   process is finished. 

5. Power system off and back on. The BIOS signon text should display.
   It will probably be necessary to enter CMOS setup and adjust
   setup values.
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Some video cards (ISA or PCI) may prevent the boot block recovery
procedure from working. If there are no beeps and the diskette drive
is not accessed, it may be necessary to remove a video card. The boot
block procedure will work without a video card. We can supply a
replacement flash chip if needed.
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(C) 1997 Micro Firmware, Inc.