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BOOTDX.DOC -- Changes from V2(15) to V3(21)
August 1979






























COPYRIGHT (C) 1975,1977,1979 BY
DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS.


THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY BE USED AND  COPIED
ONLY  IN  ACCORDANCE  WITH  THE  TERMS  OF  SUCH  LICENSE AND WITH THE
INCLUSION OF THE ABOVE COPYRIGHT NOTICE.  THIS SOFTWARE OR  ANY  OTHER
COPIES  THEREOF MAY NOT BE PROVIDED OR OTHERWISE MADE AVAILABLE TO ANY
OTHER PERSON.  NO TITLE TO AND OWNERSHIP OF  THE  SOFTWARE  IS  HEREBY
TRANSFERRED.

THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE  WITHOUT  NOTICE
AND  SHOULD  NOT  BE  CONSTRUED  AS  A COMMITMENT BY DIGITAL EQUIPMENT
CORPORATION.

DIGITAL ASSUMES NO RESPONSIBILITY FOR THE USE OR  RELIABILITY  OF  ITS
SOFTWARE ON EQUIPMENT WHICH IS NOT SUPPLIED BY DIGITAL.

BDX3.DOC                                                        Page 2


BOOTDX.DOC -- Changes from V2(15) to V3(21)
August 1979



1.0  SUMMARY

BOOTDX is a bootstrap program which is used for loading  the  DX10  or
DX20  micro-code  from  the  DSK:.   BOOTDX  runs in user-mode under a
DECsystem-10 timesharing system.  It requires 8P of memory but expands
for I/O buffers.  BOOTDX does I/O instructions directly to the DX10 or
DX20 hardware.  For this to work, the BOOTDX job must have  privileges
for the TRPSET function of the timesharing system.



2.0  EXTERNAL CHANGES

Some new switches have been added for the DX20 - see BOOTDX.HLP.   The
/DX10  and /DX20 switches have been added to determine whether to load
a DX10 or DX20.  the default is /DX10.

     /CPU:P    Select CPU on which device exists
     /DX10     Device is a DX10
     /DX20:K   Device is a DX20 with controller k.
     /TYPE:T   Look for DX20 device-type T 
               (Low-order bits of RH20 register 6)



3.0  KNOWN BUGS AND DEFICIENCIES

None.



4.0  INSTALLATIONS INSTRUCTIONS

Put BOOTDX on SYS:, if you  have  a  DX20,  put  DXMCA.ADX  (the  DX20
microcode) on SYS:.



5.0  INTERNAL CHANGES

None.



[End of BDX3.DOC]

[BDX2.DOC is appended as an integral part of BDX3.DOC]

BDX2.DOC                                                        Page 3


BOOTDX.DOC -- Changes from V1 to V2(15)
November 1976



1.0  SUMMARY

BOOTDX is a bootstrap program which  is  used  for  loading  the  DX10
micro-code   from   the  DSK:.   BOOTDX  runs  in  user-mode  under  a
DECsystem-10 timesharing system.  It requires 2K of memory but expands
for  I/O  buffers.   BOOTDX does I/O instructions directly to the DX10
hardware.  For this to work, the BOOTDX job must have  privileges  for
the TRPSET function of the timesharing system.



2.0  EXTERNAL CHANGES

BOOTDX has been changed to read either .BIN files or  .A8  files.   It
also does an automatic clear before loading.



3.0  KNOWN BUGS AND DEFICIENCIES

None outstanding.



4.0  INSTALLATIONS INSTRUCTIONS

The complete operating procedures for BOOTDX can be found in:

     a)  BOOTDX.RNO
     b)  BOOTDX.HLP



5.0  INTERNAL CHANGES

Changed to read either .A8 or .BIN files



6.0  SUGGESTIONS

None.



[End of BDX2.DOC]