SimH is pretty much a knockoff of MIMIC, which was used for microcode
verification of the LSI11... so it should work fine.
For microcode, the hardware has to be modeled with extreme care,
particularly for operations happening in parallel, and the timing has to
be accurate. Most SimH simulators time in instructions, but that's
arbitrary. You can time in any unit you want (like nanoseconds). STEP
would require some work, of course.
/Bob
On 7/1/2019 12:00 PM, [email protected] wrote:
Message: 3
Date: Mon, 01 Jul 2019 15:59:42 +0000
From: Lars Brinkhoff<[email protected]>
To:[email protected]
Subject: Re: [Simh] Which PDP-11 to choose
Message-ID:<[email protected]>
Content-Type: text/plain
Bob Supnik wrote:
The J-11 based simulators (11/73 and up) are the only ones that were
verified against actual machine microcode.
Speaking of which. Someone claimed SIMH wouldn't be well suited for a
microcode level simulation. Is there any truth to this? If so why?
Asking for a friend.
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