/       VT-8/E CONSOLE OVERLAY FILE       PAL8-VB0  08-APR-87 PAGE 1

   1                 /       VT-8/E CONSOLE OVERLAY FILE
   2   
   3                 /       LAST EDIT:      17-DEC-1986     23:00:00        CJL
   4   
   5                 /       MAY BE ASSEMBLED WITH '/J' SWITCH SET.
   6   
   7                 /       THIS IS THE CONSOLE OVERLAY FILE FOR VT-8/E TYPE CONSOLE SUPPORT WITH
   8                 /       STANDARD BUFFERED LPT: AND I/O ERROR HANDLING CAPABILITIES.
   9   
  10                 /       ASSEMBLY PARAMETERS.
  11   
  12                 /       SETTING OVTYPE=40 GENERATES A STANDARD OVERLAY (DEVICE 43, 45 CONSOLE AND
  13                 /       DEVICE 65, 66 LPT:).
  14   
  15                 /       SETTING OVTYPE=41 GENERATES A NON-STANDARD OVERLAY (DEVICE 43, 45 CONSOLE
  16                 /       AND DEVICE 40, 41 LPT:).
  17   
  18                 /       ADDITIONAL TYPES CAN BE DEFINED FOR OTHER DEVICE CODES.
  19   
  20                 /       SETTING LPBUFF=1 GENERATES AN OVERLAY WITH LPT: BUFFERING ENABLED.
  21   
  22                 /       SETTING LPBUFF=0 GENERATES AN OVERLAY WITH LPT: BUFFERING DISABLED.
  23   
  24                 /       SETTING VT8LPT=1 GENERATES INTERRUPT ENABLE FOR DEVICE 66. THIS IS TO BE
  25                 /       SET WHEN THE LPT: IS NOT DEVICE 66, BUT DEVICE 66 SHARES INTERRUPT CONTROL
  26                 /       WITH THE VT-8/E KEYBOARD (DEVICE 43).
  27   
  28                 /       SETTING VT8LPT=0 DISREGARDS DEVICE 66 INTERRUPTS AND IS THE DEFAULT SETTING
  29                 /       WHEN THE LPT: IS DEVICE 66 (THERE IS NO "EXTRA" DEVICE 66).
  30   
  31                 /       SETTING ONEWAY=1 ASSUMES A HARDWARE HANDSHAKING (CENTRONICS, ETC.) TYPE
  32                 /       INTERFACE TO THE LPT: WHICH HAS NO INPUT HANDLING.
  33   
  34                 /       SETTING ONEWAY=0 ASSUMES A SOFTWARE HANDSHAKING (<^S>/<^Q>) TYPE INTERFACE
  35                 /       WITH SUITABLE INPUT HANDLING.
  36   
  37                 /       SET PARAMETERS HERE.
  38   
  39                 /       KEY=    43              /KEYBOARD CODE
  40                 /       LIN=    65              /LPT: INPUT CODE
  41                 /       LPBUFF= 1               /ENABLE LPT: BUFFERING
  42                 /       LPT=    66              /LPT: OUTPUT CODE
  43                 /       NMCH1=  "V^100+"T-300   /FIRST NAME PAIR
  44                 /       NMCH2=  "8^100+"E-300   /SECOND NAME PAIR
  45                 /       NMCH3=  0000            /THIRD NAME PAIR
  46                 /       ONEWAY= 1               /LPT: OUTPUT ONLY
  47                 /       OUT=    45              /VT-8/E VIDEO CODE
  48                 /       OVTYPE= 40              /GENERATE STANDARD OVERLAY
  49                 /       VT8LPT= 0               /DON'T ENABLE SEPARATE INTERRUPT HANDLER FOR
  50                                                 /DORMANT DEVICE 66 (DEVICE 66 IS THE LPT:)

/       VT-8/E CONSOLE OVERLAY FILE       PAL8-VB0  08-APR-87 PAGE 2

  51                 /       CONDITIONAL ASSEMBLY PARAMETERS.
  52   
  53                         IFNDEF  OVTYPE  <OVTYPE=40>             /DEFAULT TO STANDARD OVERLAY TYPE
  54   
  55                         IFZERO  OVTYPE-40       <
  56   
  57                         IFNDEF  KEY     <KEY=   43>             /DEFAULT KEYBOARD CODE
  58                         IFNDEF  LIN     <LIN=   65>             /DEFAULT LPT: INPUT CODE
  59                         IFNDEF  LPT     <LPT=   66>             /DEFAULT LPT: OUTPUT CODE
  60                         IFNDEF  NMCH1   <NMCH1= "V^100+"T-300>  /DEFAULT FIRST NAME PAIR
  61                         IFNDEF  NMCH2   <NMCH2= "8^100+"E-300>  /DEFAULT SECOND NAME PAIR
  62                         IFNDEF  NMCH3   <NMCH3= 0000>           /DEFAULT THIRD NAME PAIR
  63                         IFNDEF  ONEWAY  <ONEWAY=1>              /DEFAULT IS ONE-WAY LPT: HANDLING
  64                         IFNDEF  OUT     <OUT=   45>             /DEFAULT VT-8/E VIDEO CODE
  65                         IFNDEF  VT8LPT  <VT8LPT=0>              /DEFAULT IS NO SHARED INTERRUPTS
  66   
  67                                                 >
  68   
  69                         IFZERO  OVTYPE-41       <
  70   
  71                         IFNDEF  KEY     <KEY=   43>             /KEYBOARD CODE
  72                         IFNDEF  LIN     <LIN=   40>             /LPT: INPUT CODE
  73                         IFNDEF  LPT     <LPT=   41>             /LPT: OUTPUT CODE
  74                         IFNDEF  NMCH1   <NMCH1= "V^100+"T-300>  /DEFAULT FIRST NAME PAIR
  75                         IFNDEF  NMCH2   <NMCH2= "8^100+"E-300>  /DEFAULT SECOND NAME PAIR
  76                         IFNDEF  NMCH3   <NMCH3= "S^100+"P-300>  /DEFAULT THIRD NAME PAIR
  77                         IFNDEF  ONEWAY  <ONEWAY=0>              /DEFAULT IS TWO-WAY LPT: HANDLING
  78                         IFNDEF  OUT     <OUT=   45>             /VT-8/E VIDEO CODE
  79                         IFNDEF  VT8LPT  <VT8LPT=1>              /GENERATE SHARED INTERRUPTS
  80   
  81                                                 >
  82   
  83                         IFNDEF  KEY     <KEY=   43>             /DEFAULT KEYBOARD CODE
  84                         IFNDEF  LIN     <LIN=   65>             /DEFAULT LPT: INPUT CODE
  85                         IFNDEF  LPBUFF  <LPBUFF=1>              /DEFAULTS TO LPT: BUFFERING
  86                         IFNDEF  LPT     <LPT=   66>             /DEFAULT LPT: OUTPUT CODE
  87                         IFNDEF  NMCH1   <NMCH1="V^100+"T-300>   /DEFAULT FIRST NAME PAIR
  88                         IFNDEF  NMCH2   <NMCH2="8^100+"E-300>   /DEFAULT SECOND NAME PAIR
  89                         IFNDEF  NMCH3   <NMCH3=0000>            /DEFAULT THIRD NAME PAIR
  90                         IFNDEF  ONEWAY  <ONEWAY=0>              /DEFAULT IS TWO-WAY LPT: HANDLING
  91                         IFNDEF  OUT     <OUT=   45>             /DEFAULT VT-8/E VIDEO CODE
  92   
  93                         IFZERO  LPT-66  <
  94   
  95                         IFNDEF  VT8LPT  <VT8LPT=0>              /NO SHARED INTERRUPT HANDLING
  96   
  97                                         >
  98   
  99                         IFNDEF  VT8LPT  <VT8LPT=1>              /HANDLE SHARED INTERRUPTS