From: Paul Winalski <paul.winalski@gmail.com>
To: Clem Cole <clemc@ccc.com>
Cc: tuhs@tuhs.org
Subject: [TUHS] Re: Unix install & "standalone" package
Date: Tue, 5 Sep 2023 13:03:29 -0400 [thread overview]
Message-ID: <CABH=_VQUrRg=pJRJ4Hg12wgxPctwMAS5QNBz4i9XdBwM1hGh+A@mail.gmail.com> (raw)
In-Reply-To: <CAC20D2M-NSj83-S58Ay9rSBsWhWZpfbEyy6tC-vqF3v8ERRhOA@mail.gmail.com>
On 9/4/23, Clem Cole <clemc@ccc.com> wrote:
>
> Even with the VAX, the front-end runs on an LSI-11 with floppies, so things
> like microcode were loaded into the VAX and stored in ROM.
I think you meant either "stored in RAM" or "not stored in ROM". The
LSI-11 front end for the VAX-11/780 (and other early VAXen?) was
connected to the SBI (Synchronous Backplane Interconnect--the system
bus) and performed three main functions: microcode load and system
bootstrap initiation, interface for the system console (originally a
LA-36 dot matrix terminal), and some system diagnostics. CPU
microcode was stored on a 5" floppy disk connected to the LSI-11 and
was loaded into RAM at system power-up.
-Paul W.
next prev parent reply other threads:[~2023-09-05 17:03 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-04 14:44 [TUHS] " Norman Wilson
2023-09-04 14:55 ` [TUHS] " Vincenzo Nicosia
2023-09-04 17:20 ` Warner Losh
2023-09-04 19:05 ` Clem Cole
2023-09-05 17:03 ` Paul Winalski [this message]
2023-09-05 18:02 ` Clem Cole
2023-09-04 19:59 ` Theodore Ts'o
2023-09-04 23:51 ` Warner Losh
2023-09-04 17:18 ` Warner Losh
2023-09-04 22:10 ` Steffen Nurpmeso
2023-09-05 15:53 ` Steffen Nurpmeso
2023-09-06 17:50 ` Warner Losh
2023-09-07 0:11 ` Steffen Nurpmeso
2023-09-07 16:05 ` Warner Losh
2023-09-08 14:58 ` Theodore Ts'o
2023-09-08 13:56 ` Michael Kjörling
2023-09-08 23:38 ` Steffen Nurpmeso
2023-09-09 22:43 ` Steffen Nurpmeso
2023-09-11 4:10 ` Theodore Ts'o
2023-09-11 22:05 ` Steffen Nurpmeso
2023-09-05 1:07 ` Jonathan Gray
-- strict thread matches above, loose matches on Subject: below --
2023-09-04 9:57 [TUHS] " Paul Ruizendaal via TUHS
2023-09-04 14:53 ` [TUHS] " emanuel stiebler
2023-09-04 17:07 ` Warner Losh
2023-09-04 18:21 ` Dan Cross
2023-09-05 11:15 ` Paul Ruizendaal via TUHS
2023-09-05 14:15 ` Clem Cole
2023-09-05 17:03 ` Warner Losh
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