louxj@jacobs.cs.orst.edu (John W. Loux) (03/28/91)
I have need of software to link an HP-75 to another computer throught the HP-IL/RS232 converter (82164A) that will make the 75 act as a dumb terminal. I believe that the DataComm Pac for the 75 would allow this. Does anyone have one that I might purchase? Thanks, John W. Loux Solve and Integrate Corp. john@solvint.UUCP louxj@jacobs.cs.orst.edu
jpser@cup.portal.com (John Paul Serafin) (03/28/91)
louxj@jacobs.cs.orst.edu (John W. Loux) writes: >I have need of software to link an HP-75 to another computer throught the >HP-IL/RS232 converter (82164A) that will make the 75 act as a dumb terminal. >I believe that the DataComm Pac for the 75 would allow this. As a reference I should mention that I believe that HP handhelds are excellent products and that many of the plug in modules for them are superb (41 timer, 41 plotter, 71 math, 75 VisiCalc, etc). Others range through superb, very good, mediocre, very good except for a crippling flaw (71 curve fit can't save results to a file) and on down the scale. But two modules stand out as absolute dogs: the data comm modules for the 71 and 75. They were obviously ported from some mainframe or minicomputer comm package and performance is abysmal. Characters are read by an interupt driven machine language routine which has much lower throughput than a simple inner loop written in Basic. The main driver has an inner loop of massive spaghetti code with lots of tests and branches. The manual recommends 300 baud over 1200 but doesn't mention that it is because thoughput is lower at 1200 baud than 300. Everyone that I know that got one was massively disappointed and wished someone had warned them about it. I am not sure it is possible to convey just how bad this module is. John Serafin jpser@cup.portal.com
bob@teda.UUCP (03/30/91)
In article <1991Mar27.203200.18973@lynx.CS.ORST.EDU>, louxj@jacobs.cs.orst.edu (John W. Loux) writes: |>I have need of software to link an HP-75 to another computer throught the |>HP-IL/RS232 converter (82164A) that will make the 75 act as a dumb terminal. |>I believe that the DataComm Pac for the 75 would allow this. |>John W. Loux |>Solve and Integrate Corp. Aren't there already a couple of packages for just this purpose in the Solve and Integrate (formerly the HP Users' Group) library ? The slickest one required a PMS, which is probably unacceptable to you. But I remember at least one more.. Bob Armstrong