🚀 go-pugleaf

Watch IBM's TV ad touting its first portable PC, a 50-lb marvel
https://www.fastcompany.com/90178913/watch-ibms-1970s-ad-touting-its-first-portable-pc-a-50-lb-marvel

Work was done at Palo Alto Science Center
https://en.wikipedia.org/wiki/IBM_5100

The Cambridge Science Center (at MIT) had done virtual machines,
internal networks, GML (invented there in 1969, letters from inventors
last name, decade later morphs into ISO standard SGML, after another
decade morphs into HTML at CERN), bunch of other stuff. 23June1969
unbundling announcement, started to charge for (applicatio software), SE
services, other stuff. Prior to that SE training was part of large group
onsite at customer shop. However, after unbundling couldn't figure out
how to not charge for trainee SEs at customer shop. Solution was branch
office online access to virtual machine guest operating systems at HONE
(hands-on network experience) at various CP67 datacenters around the
US. CSC had also ported APL\360 to CP67/CMS as CMS\APL with expansion of
workspace sizes from 16kbytes to virtual address space size and API to
system services (file i/o, etc). HONE then started to offer
CMS\APL-based sales&marketing support applications ... which came to
dominate all HONE activity (and guest operating system use withered
away).

PASC then did APL\CMS for VM370/CMS as well as the APL microcode assist
for 370/145 (370/145 with APL microcode assist ran APL programs as fast
as 370/168). US HONE moved from CP67/CMS to VM370/CMS and consolidated
all the US HONE datacenters across the back parking lot from PASC
(trivia, when FACEBOOK moved to silicon valley, it was into new bldg
built next door to the old HONE datacenter). It was the largest APL
operation in the world ... eight large two-processor 370 loosely-coupled
systems (sharing large disk farm) supporting single system image, load
balancing and automatic fall-over (support that wasn't released to
customers until some three decades later).

Other trivia, APL purists criticized the way CSC had implemented the
system services API (in CMS\APL). This was eventually replaced with
"shared variable" API in APLSV ... which was the implementation used in
5100 https://en.wikipedia.org/wiki/IBM_5100#Emulator_in_microcode

HONE (&/or APL) posts
http://www.garlic.com/~lynn/subtopic.html#hone
Cambridge Scientific Center posts
http://www.garlic.com/~lynn/subotpic.html#545tech

-- 
virtualization experience starting Jan1968, online at home since Mar1970