INTRODUCTION

 The standard BNL SSP system (known as BNLSYS) is  a  package
 written  by  R.  Hackenburg that forms an "operating system"
 for the SSP, including an error and interrupt handler.  User
 code  is linked with this system, and is loaded into the SSP
 starting at the addresses in program memory  PM80  and  data
 memory  DM200.  Since the SSP instruction set is based on an
 IBM assembler instruction set, (and since an IBM machine  is
 not  available), some method is needed to cross-assemble (or
 translate) code written on the VAX into  code  the  SSP  can
 understand.   A  BNL  cross-assembler (by R.  Hackenburg) is
 available for this purpose.   This  cross-assembler  accepts
 code  that  is  written in a special format based on the IBM
 assembly language, but with a  number  of  restrictions  and
 some  extra  FORTRAN-like instructions.  Each instruction of
 this code  is  interpreted  by  a  special  Macro  assembler
 package, and translated into the appropriate op-code for the
 SSP.

 For information on the BNL system and  cross-assembler,  see
 the User's Guide (BNLSSP:|SSP_PROGRAMMER.MEM).




 CROSS_ASSEMBLY_AND_LINKING

 Once source code has been  written  in  BNL  cross-assembler
 language, it must be cross-assembled and linked.

 The default file extensions are ".MAR" for the  source  code
 and  ".SSP"  for the execute file.  Those for object module,
 listing and map are the standard VAX  extensions  (  ".OBJ",
 ".LIS", and ".MAP").  The ".SSP" file will be down-loaded to
 the SSP.


 To invoke the cross-assembler, use the command


      CROSS filename

 This will produce an object module and a  listing.   One  or
 more  object  modules may be linked with the standard BNLSYS
 package to produce the map and "*.SSP" files.   The  command
 is

      SLINK filename

Converted from .HLP to .HTML by HLPTOHTML.