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Applications Associates Literature Society Technology Software revisited

Early history □ Minutes of committee meetings □ Progress reports □ Other reports □ News cuttings □ In-house publications □ Committee papers □ Personal recollections □ ACL publications □ Books □ Early Atlas publications □ FR80 reports □ Atlas manuals □ ICL1906A manuals □ Other manuals and papers

General □ Applications Software Group □ Basic Software Group □ FR80 □ FR80 operations □ FR80 project notes □ FR80 technical notes □ FR80 user notes □ Graphics □ Graphics Section □ Graphics Notes □ Graphics User Notes □ PDP15 □ PDP15 Notes □ SPROGS □ SPROGS Technical Notes □ SPROGS Papers □ SPROGS Notes

SPROGS Paper No 44: New Output Devices in SPROGS

R E Thomas

March 12 1974

1. Tektronix

It is now possible to output graphs for a Tektronix via the experimental version of SPROGS. The user should connect TP0 to an ALLCHAR Fi1e, and select device 64. Currently, it is only sensible to output one frame at a time, since multiple frames will overwrite each other.

This restriction may be lifted when a definite policy concerning the Tektronix has been formulated. Note that the appropriate region limits are:

0.0, 0.0, 1023.0, 780.0

(the routine TKTRON will set up region 1 correctly), and that, to make use of the hardware characters, font 3 should be used with TEXPAN factor 1.5. It is possible to save basic Tektronix in a file using STSAV, FISAV.

Example:

OB :SPROGS.SPROGS,*CR,#TP0GRAF (ALLCHAR),JT30SECS 
      MASTER MAIN
      CALL STSPR
      CALL TKTRON
      CALL VEC (0.0,0.0,200.0,200.0)
      CALL ADVFLM
      CALL ENDSPR
      STOP
      END
      FINISH
EJ AB,CM

The graph will be displayed by

      LISTFILE GRAF

when used at a Tektronix.

2. Dummy Devices

Some dummy routines have been included to allow a user to supply his own output device. The routines are:

NWxST                    Initialise device 
NWxCH (X,Y,ICH,IV)       Plot character with SPROGS number ICH with intensity IV at (X,Y) 
NWxVEC (X1,Y1,X2,Y2,IV)  Plot vector (X1,Y1) to (X2,Y2) with intensity IV 
NWxADV                   Advance frame 
NWxFIN                   Close device

where x is either 8 or 9, and the appropriate DVOUT setting is 128.0 or 256.0. To install a new device, the user replaces the dummy routines with his own.

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