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Re: VME boards [Re: Edstrom] #107895 11/14/16 02:10 AM
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They're pin-compatible, but are they register-compatible?

Re: VME boards [Re: Edstrom] #107896 11/14/16 02:30 AM
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Yes, the control registers (CD, CE, CF) have the same location and format.

Re: VME boards [Re: Edstrom] #107897 11/14/16 09:06 AM
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Edstrom Offline OP
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Great, I'll have a look! smile

Re: VME boards [Re: Edstrom] #107899 11/14/16 11:11 AM
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Edstrom Offline OP
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Seems to work just fine: smile

EDIT: at least it displays the time when started, it doesn't count yet. Figure the interrupt needs some tuning or something...

Last edited by Edstrom; 11/14/16 11:18 AM.
Re: VME boards [Re: Edstrom] #107900 11/14/16 03:53 PM
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Al Kossow Offline
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yay!

Re: VME boards [Re: Edstrom] #107901 11/14/16 06:15 PM
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27 years and counting smile

Re: VME boards [Re: Edstrom] #108345 01/04/17 09:19 PM
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As a big fan of 68k, and old-time user of MVE hardware, I'm enjoying seeing the progress on this emulation.

It would be great to seeing it boot Motorola UNIX or OS-9/68k!

There are images of the Motorola 68k port of AT&T System V for VME in the bitsaver's archive. Something like this would also be great for working on the Linux m68k port.

As an aside, as an encore, if you ever want to do the m88k VME hardware I have a copy of Motorola UNIX for that somewhere, I think.

Re: VME boards [Re: Edstrom] #108346 01/04/17 10:13 PM
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Edstrom Offline OP
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Nice to get some feedback as this is a long term project for me and there are so much I'd like to do with the VME. smile

We are still at early emulations and recently I pushed the first actual VME bus enabled drivers and I will soon enable all the existing VME SBC board drivers and add more as I got hold of firmwares and/or board documentations.

This will enable exploration of the device support in the existing board firmwares we have and add supported slave boards such as FDD, HDD and SCSI boards. When that is done we will have a lot more software to play with.

Right now I'd like to get more VME board firmwares and documentations as well as specialized firmwares for industrial control applications even though the latter probably will be unducumented it will teach us a lot how these systems were built. Apart from 68K VME I'd like to see 960, Sparc, 386 and obviously 88K up and running one day, but first the bus must be more complete and 68K booting something substantial.

Re: VME boards [Re: Edstrom] #108356 01/06/17 06:32 AM
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I've long since sold my VME stuff, unfortunately, so I don't have any way to come up with firmware images from the devices, except to ask a buddy of mine who is heavy into retro collecting. He is the guy that got all my VME stuff, actually. I'm not sure if he still has it; he is trading away stuff all the time, but I'll ask.

However, I do have some assembler source for driver code, if you're interested. Not sure what sort of docs for VME I might still have around. I'll look.

PM me.

Re: VME boards [Re: Edstrom] #108476 01/18/17 12:32 AM
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Edstrom Offline OP
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Here is a nice VME system with Connected Apple Lisas and VAX computers (see the figure on page 261) used by CERN
It would be nice to emulate just a fraction of it smile The problem is of course to get all the software involved,
very custom and probably at the dump by now. It is quite detailed in the paper linked above though.

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