Emulate LSI-11 CPU?
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Steven Hirsch
Apr 20, 2021, 6:03:35 PM4/20/21
to UniBone
Is QBone hardware capable of emulating an LSI-11 CPU? If so, is anyone working on the necessary software?
Steven Hirsch
Apr 21, 2021, 9:15:27 AM4/21/21
to UniBone
On Wed, 21 Apr 2021, Joerg Hoppe wrote:
>> If so, is anyone working on the necessary software?
> It's on my eternal TODO list ... not top of stack.
>> If so, is anyone working on the necessary software?
If you have an architecture or design in mind, I would be interested in
helping. I have some familiarity with BBB PRU coding as I helped David
Gesswein a little with mfmemu.
--
Andrei Warkentin
Apr 5, 2024, 2:11:25 AMApr 5
to UniBone
What is the current state of 'dc' mode in QBone? I realize the CPU emulation is not wired up, but is QBone capable of acting as the arbiter for the bus? I've got a KDJ11-B which appears to support some kind of practically undocumented 'slave mode', which would be easy enough to verify if QBone can handle the arbitration....
A
Joerg Hoppe
Apr 5, 2024, 3:35:19 PMApr 5
to uni...@googlegroups.com
Am 05.04.2024 um 08:11 schrieb Andrei Warkentin:
> What is the current state of 'dc' mode in QBone? I realize the CPU
> emulation is not wired up, but is QBone capable of acting as the
> arbiter for the bus? I've got a KDJ11-B which appears to support some
> kind of practically undocumented 'slave mode', which would be easy
> enough to verify if QBone can handle the arbitration....
You mean: is QBone executing DMA or INT protocol as master?
> What is the current state of 'dc' mode in QBone? I realize the CPU
> emulation is not wired up, but is QBone capable of acting as the
> arbiter for the bus? I've got a KDJ11-B which appears to support some
> kind of practically undocumented 'slave mode', which would be easy
> enough to verify if QBone can handle the arbitration....
No, thats part of a potential CPU. UniBone however does.
Jörg
Andrei Warkentin
Apr 6, 2024, 3:00:35 AMApr 6
to Joerg Hoppe, uni...@googlegroups.com
Hypothetically, those could be separate concerns.
For example, KDJ11-B aside, MicroVAX KA630 MP support relies on running one master (arbiter) and up to 3 slaves. So in an envo where all CPUs are bus slaves, QBone could be the master. Forgetting about CPUs for a moment, a QBus that is an arbiter can be used to test DMA on devices :-).
With CPU emulation, it's interesting to run that in slave mode as well... ie bringing an emulated slave LSI-11 into a system for...experiments :-).
A
> 5 апр. 2024 г., в 2:35 PM, Joerg Hoppe <ioerg...@gmail.com> написал(а):
> --
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For example, KDJ11-B aside, MicroVAX KA630 MP support relies on running one master (arbiter) and up to 3 slaves. So in an envo where all CPUs are bus slaves, QBone could be the master. Forgetting about CPUs for a moment, a QBus that is an arbiter can be used to test DMA on devices :-).
With CPU emulation, it's interesting to run that in slave mode as well... ie bringing an emulated slave LSI-11 into a system for...experiments :-).
A
> 5 апр. 2024 г., в 2:35 PM, Joerg Hoppe <ioerg...@gmail.com> написал(а):
> You received this message because you are subscribed to the Google Groups "UniBone" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to unibone+u...@googlegroups.com.
> To view this discussion on the web visit https://groups.google.com/d/msgid/unibone/f2481b71-3883-44a5-bf21-f62e909e5681%40gmail.com.
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