powering up older machines - is it safe?
ajp166 at verizon.net
Wed Jun 4 11:16:14 CDT 2008
subject needs to reflect corvis + Vt180
Steven Hirsch wrote:
> On Tue, 3 Jun 2008, Allison wrote:
>>> Do you recall anything about the semi-mythical Corvus interface for the
>>> VT180? It's mentioned in the Corvus technical literature, but I've
>>> talked to anyone that's actually seen it in the wild. I'm curious
>>> if it
>>> ever actually existed.
>> Nothing mythical. There was a version of the corvus interface that
>> was a board that went under the Z80 and therefor allowed most any
>> Z80 system to accept the corvus hardware. It wasn't however sold as
>> a uniquely Robin thing.
> Hmm. Definitely referred to as the VT180 interface in the Corvus
> book, but perhaps that was more of a statement about the software?
likely the disk and driver code (bios overlay).
> If anyone has one of these, I am very interested in owning it.
>> FYI the Robin does not have any for of external bus. If you want
>> access to the bus you have to jack up the Z80 and grab it there.
> Corvus took other routes as well. The interface for Xerox 820
> connects to a pair of what appear to be parallel IO ports on the
> motherboard. Given the limited transfer rate, it certainly did not
> need to be sitting on the processor bus.
don't confuse speed with means of attachment. for example VT180 has no
parallel ports accessible. other machines may have.
More information about the cctech