----- PB450MP+ PnP x1.1A Release notes (3/20/96) -----

	1. Re-release of x1.1A with GD5429 video BIOS that will ID
	   as a GD5428.

           ----- PB450MP+ PnP x1.1A Release notes (3/02/95) -----

        1. Re-release of x1.1A with singon signature corrected to show
           PB450MPA.

           ----- PB450MP+ PnP x1.1A Release notes (12/06/94) -----

        1. Fixed a bug that wasn't clearing the floppy perpendicular mode for
           drives other than 2.88M.  This fixes the floppy format problem 
           reported by PB Hong Kong.

        2. Fixed a floppy bug, for functions 1-5, that didn't return the 
           correct number of sectors in al, when the requested number of
           sectors was equal to the max number of sectors per track. 

        3. P24T Processor support added. (in Write-Thru Mode only)

        4. DX4 100 5V Processor support added.

        5. Set floppy default as A: 1.44MB and B: None.

	6. Fixed bug that was leaving video bios shadow ram 
	   unwrite-protected at boot.

        7. Replaced 5428 video BIOS with 5429 video BIOS.

           ----- PB450M+ PnP x1.19 Release notes (10/13/94) -----

        Bug fixes (Already released with PB470PC and PB450PC):
        
           a. ICU not reporting all used System resources 
              (e.g.,I/O 170-177h)
  
  	      DESCRIPTION:  ICU doesn't display secondary IDE port 
              (170-177h)
	   
              STATUS:  FIXED
                
           b. The HDD Landing Zone and Write Precomp are setup correctly
              during post auto-typing.  Originally, the Landing Zone and
              Write Precomp were not modified during post auto-typing.

           c. Fixed bug in the Security feature when only USER password is set.
              It used to be possible to enter setup, without having to enter
              a password, if only the USER password was enabled. 
                
           d. Set Cache Read 'Lead-off Cycle' Wait State Control
              to always be 3-X-X-X, no matter what the CPU type
              is.

	   e. Fixed ZDS MKDSK.EXE problem.  
               
	   f. Fixed Novell Certificaton Disk problem.

           g. When Floppy check is DISABLED in setup the
              following message is displayed by the BIOS.

                Autotyping adapter 0 master ... Autotype Failed

              After researching this problem, we found that only Western 
              Digital drives are failing post autotyping.  The reason that 
              only WD drives fail, is that they always reset the BUSY bit 
              immediately after a reset command; however, after the power
              up phase has completed they set the DRIVE READY bit.  This is 
              different than most other drives.  Usually the BUSY bit is 
              reset after the drive has spun up.  The reason that this 
              problem occurs, when Floppy check is DISABLED, is simply that 
              the drive has not had time to complete its power up by post 
              autotyping.  We have modified the BIOS to check both the BUSY 
              bit and DRIVE READY bit.  This will ensure that the drive will
              be recognized during post autotyping. 

           h. During power up, the HDD post routine doesn't wait the
              required 30 seconds after a reset drive.

                   This has been fixed.