Many of the additions to the initial HLASM had their start in the SLAC mods to H assembler. Several of us spent many of our evenings at several SHAREs developing the requirements that John was able to push through to get HLASM done.
SLAC was dropping support for their mods since they were moving off VM, and many of us had systems and vendor software that depended upon the mods. Lloyd Fuller ----- Original Message ---- From: Don Higgins <[email protected]> To: [email protected] Sent: Fri, June 22, 2012 7:33:56 AM Subject: Re: HLASM - 20 years old John, all Happy 20th birthday to HLASM! John it has been a real pleasure getting to know you through our meetings at past SHARE presentations and email and posts on this great list for mainframe assembler developers. I'm sure you also had a hand in the development of assembler F and H before HLASM. I would be interested in hearing a little of the history leading up to HLASM. My first serious mainframe assembler work as a system programmer at Florida Power started in 1970 was on an IBM 360-50 with OS/MFT and I don't remember the assembler version. It brings back a lot of fond memories. PC/370 v4.2 was published as shareware in 1985 and would execute about 25,000 IBM 370 problem state instructions on an IBM PC. I developed it for a course I was teaching at the University of South Florida, and back then a lot of universities were teaching mainframe assembler. I remember how surprised I was when a neighbor came back from his first year at Florida State University and said they were using PC/370 to learn mainframe assembler. Don Higgins [email protected]
