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 * http://www.brouhaha.com/~eric/software/tsbutils/ - tape utilities for *nix

The FirstComputer that TimRiker ever worked on was at [http://www.penfield.edu/phs/ Penfield High School] in [http://www.penfield.org/web/ Penfield, New York]. It may have been an HP-2114C model. It used a form of time shared basic, but it was not a dual cpu model cabinet. It was running a time shared basic environment. Perhaps the "TIME-SHARING EXECUTIVE" mentioned in the [http://oscar.taurus.com/~jeff/2100/family/family.html sales brochure]?

The system config as best recollected:

  • HP-2114 style cover with 16 connected touch switches
  • mounted in a rack mount cabinet
  • 32k of RAM installed split 5/5/3/3 or similar for the 2 CRTs, card reader and teletype
  • [http://www.pdp8.net/asr33/asr33.shtml ASR-33 teletype] with punch tape reader (writer?)

  • 1 text crt terminal
  • 1 "graphics" terminal (honeywell? I remember it had a graphics character set with a toggle button)
  • 2? disk drives. (type? 8" floppy? drum?
  • card reader
  • line printer
  • external tape punch was not connected.

Here are some useful links:

Hacking HOWTO:

  • install SIMH above and start "hp2100"

  • load the hp basic sources: "LO basic1.abs"

  • jump into basic "GO 100"

  • input a simple program like this one "forever":

    10 DEF FNA(X)=ATN(TAN(ATN(TAN(ATN(TAN(ATN(TAN(ATN(TAN(X))))))))))
    20 DEF FNB(X)=FNA(FNA(FNA(FNA(FNA(FNA(FNA(FNA(FNA(FNA(FNA(X)))))))))))
    30 DEF FNC(X)=FNB(FNB(FNB(FNB(FNB(FNB(FNB(FNB(FNB(FNB(FNB(X)))))))))))
    40 DEF FND(X)=FNC(FNC(FNC(FNC(FNC(FNC(FNC(FNC(FNC(FNC(FNC(X)))))))))))
    50 DEF FNE(X)=FND(FND(FND(FND(FND(FND(FND(FND(FND(FND(FND(X)))))))))))
    60 DEF FNF(X)=FNE(FNE(FNE(FNE(FNE(FNE(FNE(FNE(FNE(FNE(FNE(X)))))))))))
    80 PRINT FNF(1)
    90 END
  • list the program: "LIST"

  • then run it: "RUN"

  • note that on real hardware this silly recursive program could take a very long time to finish. On a 1G ppc debian linux box with SIMH 3.3.1-1 it takes about a half hour and then prints 1. :)

  • Here's a more useful program I whipped up that graphs trig functions

    100 REM TRIG BY TIM RIKER <TIM@RIKERS.ORG>
    110 LET X1=-3.2
    120 LET X2=3.2
    130 LET X3=.1
    140 LET Y1=-1.5
    150 LET Y2=1.5
    160 LET Y3=(Y2-Y1)/70
    170 LET X4=(-X1)/X3
    200 FOR X0=0 TO (X2-X1)/X3
    210 LET X=X1+(X3*X0)
    220 LET S0=INT(((SIN(X)-Y1)/Y3)-.5)
    230 LET C0=INT(((COS(X)-Y1)/Y3)-.5)
    240 LET T0=INT(((TAN(X)-Y1)/Y3)-.5)
    250 LET Y0=INT(((0-Y1)/Y3)-.5)
    300 FOR Y=0 TO 70
    310 IF Y=T0 THEN 520
    320 IF Y=S0 THEN 540
    330 IF Y=C0 THEN 560
    340 IF Y=Y0 THEN 580
    350 IF X0=X4 THEN 600
    500 PRINT " ";
    510 GOTO 700
    520 PRINT "T";
    530 GOTO 700
    540 PRINT "S";
    550 GOTO 700
    560 PRINT "C";
    570 GOTO 700
    580 PRINT "X";
    590 GOTO 700
    600 PRINT "Y";
    700 NEXT Y
    710 PRINT ""
    720 NEXT X0
    999 END

RikerWiki: FirstComputer (last edited 2014-02-26 18:47:12 by TimRiker)