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Michael, Thank you, sir.? (I must have missed that earlier post.) Mark

Hi Scott, given the lack of reliability of SD cards when dealing with lots of IO activity/filesystem writes, I’d recommend the use of an USB 3.0 attached disk to you. Even though a PI4 cannot

32GB Micro SD card

Of course, the absolute paths in this simple example must be adjusted to the individual environment. Given the circumstances, I’ve just did a simple copy and paste.

Oh excuse me, this has been already posted earlier I supposed. Here is what I used: ./configure --enable-optimization="-O3 -frename-registers -mhard-float -pipe -mlittle-endian -munaligned-access

And the options you use are? -- Drew Derbyshire "The Beatles want to hold your hand, but The Stones want to burn your town." -- Tom Wolfe

Michael, And what exactly would "the proper compile options" be, for an RPi4? (Without that kind of information, your post is just not very helpful... Just saying ...) Mark S. Waterbury

Choosing the proper compile options make a huge difference, especially for the PI4, I daresay. Kind regards Michael

32GB? -- Drew Derbyshire "The Internet Gateway is 2 VMBLOKS down and to the left, right past the . . ."

Hi Scott The URL you asked for is: https://peppe8o.com/emulating-mvs-mainframe-on-raspberry-pi/ Since this is my first one, I bought my rp4b complete 32GB kit from Amazon.? I have dealt with

https://ptolemy.berkeley.edu/projects/embedded/pubs/downloads/spice/ https://ptolemy.berkeley.edu/projects/embedded/pubs/downloads/spice/spice2.ibm.tar.gz Bill

Hello! I can answer that one, try the ones at http://www.microcenter.com I find that site, and those stores to be in most regards, perfect. Although I am leaning towards the two I use here in New

Hi Ed, Can you share with us the link you found with clear instructions?? I am reluctant to buy a Pi until I know there are reliable instructions to follow! Also, what is the "best" website to order

"well" is relative. Doing a sysgen from scratch on a zero was a multiday process that never completed; I finally did the gen on an Intel system, and moved my DASD over to the PI. It was ok. As I

Ignore that. looks like the fortran compiler is dying first, which is taking out the initiator. I seem to recall trouble with losing initiators when whatever they were running abended. listen to Vince

Allocate more region and memory - a lot more :) See job and exec cards.

maketape should work. Try it. Adding more region to a HASP initiator may help, but then we would need to figger out how to do that there thing. Where did you find an old copy of the SPICE source code?

80a is out of memory. Maybe give some more region? Joe

I created an OS/360 MVT using Jay Maynard's instructions at http://www.conmicro.com/hercos360 It worked, and will run simple assembler and FORTRAN jobs. Then I tried to run a 20,000 line FORTRAN

Works well on a pi zero too! Sent from my iPad Air 2