[TUHS] H.J. Lu Bootable Root & Base System disks
jsteve at superglobalmegacorp.com
Thu May 27 04:12:22 AEST 2021
In the CSRG DVD set there is some cci ports of 4.2BSD… stuff is #ifdef’d Tahoe in there so it’s not hard to pick out but it doesn’t seem to have anything really documents looking.
I could be 100% wrong though, but they just look like ‘clean’ source trees. Not sure if sanitized though.
The assembler shows 182 opcodes …
* Boot program... arguments passed in r10 and r11 determine
* whether boot stops to ask for system name and which device
* boot comes from.
/* r11 = 0 -> automatic boot, load file '/vmunix' */
/* r11 = 1 -> ask user for file to load */
The stand/boot sounds awefully vax like with r10/r11…
From: Clem Cole
Sent: Wednesday, 26 May 2021 11:22 pm
To: Lars Brinkhoff
Cc: Jason Stevens; tuhs at minnie.tuhs.org
Subject: Re: [TUHS] H.J. Lu Bootable Root & Base System disks
Really good point -- I saw some years ago, but never owned a copy.
On Wed, May 26, 2021 at 3:57 AM Lars Brinkhoff <lars at nocrew.org> wrote:
Jason Stevens wrote:
> It took me years of on and off to finally figure out what the heck a
> Tahoe even was. Spoiler for anyone who wasn’t there when it happened
> it’s a Harris HCX-9.
> But then again there is some movement on an RT emulator and there is
> the 3b2 stuff so maybe there only needs to be a ‘push’…
Is there even a single shread of documentation though? It's a daunting
task trying to write an emulator based only on inferring the internal
workings of the machine from 4.3BSD source code. Mind, the end result
wouldn't be too interesting; hey it works... just like a VAX.
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the TUHS