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                 EDIT DESCRIPTIONS FOR LINK-10-V5-1                             
  
  
                             EDIT 2067   FOR LINK
  
  
  
  
[SYMPTOM]
  
Entering a filename such as NUL:FOO will cause an illegal  instruction
trap.
  
  
[DIAGNOSIS]
  
Edit 2014 causes the stack to be off by 6 when NUL:  is used.
  
  
[CURE]
  
Handle NUL:  correctly by not doing an ADJSP if the device was NUL:.
********************************************************************************
  
  
                             EDIT 2070   FOR LINK
  
  
  
  
[SYMPTOM]
  
LINK may suppress loading of a program if the left half of  .JBERR  is
nonzero.
  
  
[DIAGNOSIS]
  
LINK checks the entire word, .JBERR, to determine if  there  were  any
compilation  errors.  If .JBERR is nonzero then loading is suppressed.
This is incorrect;  only the right half of .JBERR is reserved for  the
error count.
  
  
[CURE]
  
Check only the right half of .JBERR to determine  if  there  were  any
compilation errors.
********************************************************************************
  
  
                             EDIT 2071   FOR LINK
  
  
  
  
[SYMPTOM]
  
LINK sources contain definitions which are already in  various  system
.UNV files.  This is unnecessary and is not good programming practice.
Duplicate definitions include some JSYSes, .GTxxx bits, and PDV words.
  
  
[DIAGNOSIS]
  
The definitions were needed in  LINK  because  they  were  first  used
before the .UNV files had them.  This is no longer necessary.
  
  
[CURE]
  
Remove the duplicate definitions.
********************************************************************************
  
  
                             EDIT 2072   FOR LINK
  
  
  
  
[SYMPTOM]
  
The 102x block processor has two  problems.   The  start  address  and
subsequent  relocation bytes are not picked up properly and there is a
typo which causes data to be stored in the wrong halfword.
  
  
[DIAGNOSIS]
  
The first relocation byte is not being stepped over before picking  up
the start byte.  The typo for the halfword store needs to be fixed.
  
  
[CURE]
  
Skip the first relocation byte and fix the typo.
********************************************************************************
  
  
                             EDIT 2073   FOR LINK
  
  
  
  
[SYMPTOM]
  
Undeserved LNKPEL, LNKPTL, LNKHCL, LNKOLC, and other messages  when
loading programs with more than 18 overlays, if some are writable.
  
[DIAGNOSIS]
  
LINK uses the address of the global symbol containing the  base  of
the  writable overlay table, instead of its contents.  This  causes
LINK to store into accumulator zero  instead  of  into  the  table,
trashing the flags which are normally in accumulator zero.
  
[CURE]
  
Use the contents of the location, rather than its address.
********************************************************************************
  
  
                             EDIT 2074   FOR LINK
  
  
  
  
[SYMPTOM]
  
Incorrect symbol table, LNKSFU errors, or other problems.
  
[DIAGNOSIS]
  
LINK attempts to determine whether or not it must expand the LC  or
HC  window  by  subtracting the lower address needed from the upper
address,  and  checking  this  against  the  size  of  the  window.
However,  this can be one page too small because the window is page
aligned, and the addresses needed are not.
  
[CURE]
  
Put the upper address at the top of the page.
********************************************************************************
  
  
                             EDIT 2075   FOR LINK
  
  
  
  
[SYMPTOM]
  
Building LINK-10 results in warnings that .SGNAM, .SGDEV,  and  .SGPPN
are obsolete.
  
  
[DIAGNOSIS]
  
LINK uses the old symbols to obtain information if the GETTAB fails.
  
  
[CURE]
  
Remove the old symbols from LINK and issue a fatal  error  instead  of
trying the old offsets if a GETTAB fails.
********************************************************************************
  
  
  
END OF  LINK-10-V5-1