14 Jul
2018
14 Jul
'18
8:50 a.m.
On 07/14/2018 07:57 AM, Noel Chiappa via cctalk wrote:
Well, there were two major variants of the 370/145, that had
major changes at least to the power system.
The first version had many small power regulator modules,
the later had two HUGE regulators (390 A each, at +1.25 V
and -3 V). So, they could have updated a bunch of other
features at the time of that change.
Jon
From: Jon
Elson
I THINK the 370/145 used the same drive.
The "IBM's 360 and Early 370 Systems" book doesn't say so explicitly
(it just
says Minnow - the one with the solenoids - was a"incorporated in .. the
System/370 processors", pg. 517), but given that the follow-on drive
(Figaro/Igar) didn't start shipping until 1973 (pg. 519), and the /145 started
shipping in 1971, it pretty much had to have had a Minnow.