gerard – Geronimo/370

1957 – Birth of the internet

Posted on2019-04-182019-04-18Leave a comment

Cool video about how the internet came to be what it is today:… Read the rest

55th birthday of the mainframe!

Posted on2019-04-052019-04-09

It’s a special day today, 55 years ago IBM announced this model, along with other initial models of the System/360 family of computers, in April 1964. This particular model was first shipped to the Bank of America in August 1965. All photos in this post taken from this read worthy… Read the rest

BREXX V2R1 availabe for MVS3.8

Posted on2019-04-012019-04-01

A couple of fellow enthusiasts ported the BREXX language to MVS3.8j TK4- ! A Herculean task indeed… Here’s a quote from their announcement: After good progress in the last months, we are just about ready to ship the first MVS release of BREXX/370. Thanks to all who have helped in… Read the rest

Free XA !

Posted on2019-03-122019-03-24

We, a couple of IBM mainframe enthusiasts, have started a campaign to petition our friends at IBM to release MVS/XA and VM/XA along with 31bit compilers. Please take a minute to sign the petition and make ourselves be heard by the power that be at IBM: Sign the petition!… Read the rest

DNS Pi-hole

Posted on2019-01-242019-03-23

Block annoying ads Click image for more info Wow, I just got rid of much of the annoying ads you see on almost every website you open nowadays. I did that by having one of my Raspberry Pi’s do some extra work as a DNS sink-hole. Want to know how… Read the rest

MVS output…

Posted on2019-01-092019-03-232 Comments

IBM printers IBM 1403 in the “Haus zur Geschichte der IBM Datenverarbeitung” museum, Sindelfingen, Germany When a IBM/370 system like MVS or VM generates output, it is stored in what we call output queues. These queues are divided in classes. There’s a ‘Held output’ queue where output goes that we… Read the rest

So, what is Geronimo/370?

Posted on2019-01-042019-03-23

I’m a fan of S/370 computing This site is about my System/370 in the cloud. In case you didn’t notice, I like the IBM/370 architecture and the Operating Systems that work on them. The name I have a habit of naming all my computers after Star Trek vessels. My source… Read the rest

Honoring a giant

Posted on2019-01-012019-03-23

Larry Roberts (✝) Today, I would like to remember a pioneer, an internet giant, who passed away on December 26, Larry Roberts. He was the project manager of the ARPA net project, which was the precursor to the internet. He might not be the most well known person in this… Read the rest

IBM/370 Reference Summaries

Posted on2018-12-242019-03-23

I kept a couple of Reference Summary cards from ancient times. I photographed them to be shared with the community. See the cards themselves here. System/370 DOS/VS POWER/VS Reference Summary CICS Master Terminal Operator Reference Summary IBM Reference Card | COBOL System/370 Reference Summary… Read the rest

Hercules S/370 print to PDF

Posted on2018-12-212019-03-23

Today I automated the process of printing MVS output from the Hercules emulator to PDF files. It makes it much more realistic and nostalgic to look at output on the old ‘zebra-paper’, don’t you think? Example below. Also check my project page to see how it’s done.… Read the rest