System Device (SY)                    Source Input Device (SRC)    
     +------------------------------+         +------------------------------+ 
     |  Monitor                     |         |  SYSGEN.CND                  | 
     |  SWAP.SYS                    |         |  SYSGEN.TBL                  | 
     |  System device handler       |         |  EDTL.MLB                    | 
     |  Input device handlers       |         |  SYSTEM.MLB                  | 
     |  Output device handlers      |         |                              | 
     |  VMX.SYS or VM.SYS           |         |  User supplied device        | 
     |  MACRO.SAV                   |         |     source files             | 
     |  LINK.SAV                    |         |  Appropriate system          | 
     |  PIP.SAV                     |         |     source files             | 
     |  MONMRG.SAV                  |         +------------------------------+ 
     |  SYSMAC.SML                  |                                          
     |  SYSGEN.BLD                  |            Object Output Device (OBJ)    
     |  SYSGEN.MON                  |         +------------------------------+ 
     |  SYSGEN.DEV                  |         |  Receives object files       | 
     +------------------------------+         |  with OBJ file type.         | 
                                              +------------------------------+ 
        Virtual Memory Device (VM)                                               
     +------------------------------+            Binary Output Device (BIN)      
     |  (or default storage device) |         +------------------------------+   
     |                              |         |  Receives built system       |   
     |  WF (MACRO work file)        |         |  files with SYG file         |   
     |  CF (cross-reference file)   |         |  type.                       |              
     +------------------------------+         |                              |  
                                              |                              | 
                                              |                              | 
                                              +------------------------------+ 
                                                                               
                                                  Map Output Device (MAP)      
                                              +------------------------------+ 
                                              |  Receives link maps.         | 
                                              |                              | 
                                              +------------------------------+