The 1620 was my first computer. For some reason, UTA was still running one in 1975, and in my senior year of high school we used it for a new computer course. The course was mostly programming FORTRAN II, but I managed to find an SPS manual, and learned that on my own. I was hooked on assembler! In college, learning System/370, I initially found registers rather a PItA. The beautiful 1620 didn't need them! Ah well, I guess I got used to them.
sas On Mon, Jul 22, 2019 at 8:58 PM Thomas Kern < [email protected]> wrote: > On 07/22/2019 12:07, retired mainframer wrote: > >> -----Original Message----- > >> From: IBM Mainframe Discussion List <[email protected]> On > >> Behalf Of Gary Weinhold > >> Sent: Monday, July 22, 2019 7:50 AM > >> To: [email protected] > >> Subject: Re: Friday! > >> > >> I almost remember how to do it on an IBM 1620 > > > > Simply the best machine ever for teaching programming. > > > > IIRC, it was a Transmit Record instruction with the destination one byte > beyond the source. At the end of memory it would wrap back to zero and run > forever. > > > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, > > send email to [email protected] with the message: INFO IBM-MAIN > > > > That is the machine I started on back in Jan 1971. Nice way to start, > machine language, then FORTRAN. > > /Tom Kern > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > -- sas ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
