DOB is  an  object  module  disassembler,  which  will  create  a
MACRO-11  source file from any object module.  It will operate on
either standard object modules, or object module libraries.

The output from DOB can be reassembled directly.  The only errors
that  should be generated will be 'Z' type errors.  The resultant
object module should be identical to the original object  module,
if the original object module was generated by MACRO-11.

The command syntax is as follows:
DOB> output/sw,temp=input/sw
*CONCATENATION
If the input file is a concatenated object module, only  the
first  module  is disassembled.  The program could easily be
modified to disassemble  all  modules,  but  since  MACRO-11
doesn't  do  stacked  assembles,  the  resultant source file
would have to be broken up.
*DEFAULTS
The output filename must be specified. The output extension 
defaults to .MAC.    The input file must also be specified,
the extension defaulting to .OBJ.    The temp file defaults 
to SY:TEMPnn.TMP where nn is the current job number. SY: is
the default disk for all files. 
*LABELS
Labels take on one of three forms.  If the location is defined as
a  global  symbol, the global symbol name is used.  When defining
such a symbol, a check is made to see if more than one symbol  is
defined  for  the same location.  If there is, each global symbol
is written to the output file on a seperate line, followed  by  a
colon.   Only  the  last symbol is actually used on the line with
the disassembled code.  If the  location  is  not  defined  as  a
global  symbol,  the  symbol  name takes on one of two forms.  If
there are less than 14 psects in the object  module,  the  symbol
name  consists of an alphabetic character, followed by five octal
digits.  The octal digits consist of the low 5  octal  digits  of
the address.  The character is generated by using 'A' and 'B' for
the first psect, 'C' and 'D' for the second, and so  forth.   The
lower  letter is used for addresses in the range 0-77777, and the
higher for addresses in the range '100000-177777'.  If there  are
more  than 13 psects, the symbol name is generated by using a two
character psect identifier, followed by four hex digits  indicat-
ing the address.  The psect identifier is generated by taking the
psect number (0-255) and breaking it into two parts  by  dividing
by ten.  The result of the division is used to generate the first
character (0=A,1=B,...) and the remainder is used for the  second
(0=0,1=1,...). 
*SWITCHES
There are currently four valid switches for the  input  filespec:
"/LB",  "/EI", "/FI", and "/FP".  The "/LB" switch indicates that
the input file is an object library.  The switch value is from  1
to  6  RADIX-50  characters  indicating  the  name  of the module
to  be  disassembled.    An   example   of   this  is  "DOB> TI:= 
[1,1]SYSLIB/LB:.GET".    The  default   extension  for the  input
file is either ".OBJ" or ".OLB",  depending  on  whether  or  not
there is a "/LB" switch.

The remaining input filespec  switches  indicate  which  optional
instruction sets to use.  The default is to use them all.  "/-EI"
indicates that EIS instructions are not really  instructions  and
should  be  disassembled as ".WORD xxxxx".  "/-FI" indicates that
FIS instructions are not really instructions.   "/-FP"  indicates
that FPP instructions are not really instructions.

There are two valid switches for the output filespec:  "/AS"  and
"/RA".   These  switches indicate what additional formats to dump
the code, other than instruction.  "/AS" indicates that the  code
should  be dumped in ASCII.  "/RA" indicates that the code should
be dumped in RAD50.  If either of these options is selected,  the
values  of  the  instruction is dumped in the specified format as
comments.
*TEMP_FILE
The temp file is  used  for  internal  information,  and  usually
doesn't   need   to   be  specified.   The  default  filespec  is
"SY:TEMPnn.TMP" where nn is the current job number.  This file is
deleted at logout. The only reason a filespec would ever be given
for this  would be to cause this file to go to a  different  disk
than  the default, since this could be a rather large file.  This
file contains 16 blocks for each psect in the object module.
