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From: Chris Hanson <cmhanson@eschatologist.net>
To: Al Kossow <aek@bitsavers.org>
Cc: tuhs@minnie.tuhs.org
Subject: Re: [TUHS] Bitsavers' RT/PC, AIX, AOS, etc. recent additions
Date: Wed, 19 Feb 2020 17:29:01 -0800	[thread overview]
Message-ID: <4AC9BD85-6D98-4AC2-BDA6-9B75F1F0EF87@eschatologist.net> (raw)
In-Reply-To: <603eee49-26a1-c2ab-61ae-aa9d75896744@bitsavers.org>

On Feb 17, 2020, at 5:30 PM, Al Kossow <aek@bitsavers.org> wrote:
> 
> I'm in the process of restoring/documenting the machine, and also helping a member of the MAME team to emulate the system.

Thanks! I started on a ROMP emulator in Swift using only the docs and 6150 IPL ROM on Bitsavers many months ago, then got sidetracked with work. Maybe I’ll pick that back up again, especially if there’s more/better documentation available now.

One thing I found was that among the first few instructions in the IPL ROM, you immediately hit undocumented bits. I’m pretty sure they’re for resetting the two different floating-point accelerators.

  -- Chris



  reply	other threads:[~2020-02-20  1:38 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-17 21:50 Charles H Sauer
2020-02-18  1:30 ` Al Kossow
2020-02-20  1:29   ` Chris Hanson [this message]
2020-02-18  4:41 Jason Stevens
2020-02-18  4:53 ` Kevin Bowling
2020-02-18  8:01   ` Jason Stevens
2020-02-18  8:04     ` Kevin Bowling
2020-02-18 12:29       ` Jason Stevens
2020-02-18 13:01         ` Kevin Bowling
2020-02-18 11:31     ` Al Kossow
2020-02-20  1:17   ` Chris Hanson
2020-02-20  1:24     ` Kevin Bowling
2020-02-18 13:28 Jason Stevens
2020-02-18 13:39 ` Al Kossow
2020-02-20  1:44   ` David Arnold
2020-02-20  2:03     ` Al Kossow
2020-02-20  2:09       ` Bakul Shah
2020-02-20  7:18     ` arnold
2020-02-18 13:41 ` Kevin Bowling

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