simh pdp8 question

2018-07-02 Thread Jonathan Engwall via cctalk
My pdp8 seems to have very space. I want to try fortran iv. I can't even compile hello world without getting: $SY

XMP Simulator

2018-11-07 Thread Jonathan Engwall via cctalk
I have been playing with a simulated Cray downloaded from modularcicuits.com... The Simpson's behavior is always odd. Reproducing anything at all is difficult.Would anyone have information about XMT , ampex, CONC or loading DK tapes? I have read one Cray manual already and half of a second. I

Re: Floating point math in FORTRAN IV on PDP-8

2018-09-20 Thread Jonathan Engwall via cctalk
My SIMH resists anything but Adventure, I am working through a Fortran IV. I think you break from the loop and confuse the machine using i. That with some error checking: .TYPE FLOAT.FT   DO 50 X=1,100   F = FLOAT(X)   G = SQRT(F) IF (G) (11,11,90) 11 WRITE(4,75) G 75 FORMAT(H

Re: Floating point math in FORTRAN IV on PDP-8

2018-09-24 Thread Jonathan Engwall via cctalk
Maybe you don't want to fix your program. On September 19, 2018, at 5:46 PM, Michael Zahorik via cctalk wrote: Kyle, I have not run my machine since March. Summer is car season. But I thought that maybe I could run this little program quickly. My PDP8E started up, loaded the RIM and SERIAL

Re: IDE Hard Drive Question

2020-06-25 Thread Jonathan Engwall via cctalk
You'll look for pins on the board to instruct the drives which will be reading and which will be writing. That is my guess. Both need to work and have empty space. Probably the machine booted directly from some type of PXE, but maybe not. This gives you a hint: