6 Aug
2009
6 Aug
'09
10:41 p.m.
Hi Jerome,
I suggest that the first thing you decide when you use
a Unibus <=> PCI
bridge is which CPU will be used to run the code.
Which code? The PC runs PC code,
the pdp11 runs its own code. And both at once, if they like!
The real question is why you want to make use of the
bridge hardware.
What a question!
About the only reason is that you have VERY unique
Unibus hardware
that is not emulated by Ersatz-11.
Can you specify what that hardware
does? That hardware might be easier to emulate than you think.
HA HA HA!!!!!
Ersatz-11 and SIMH can NOT emulate real hardware! Where can I put my RK05 pack into one of
them? How
do I use them to make a Unix installation tape that can be read in by the 11/45 via TU10?
How do I use them to test my RC11 controller?
I (and not only I!) am a user and collector of real hardware. My goal is definitively not
the
simulation. I want the bridge as a bridge to the "new world". To make things a
bit easier. If I
wanted to emulate everything, I would not spend $$ (only two Dollar signs!) and time for
hauling
tons of heavy gear all over the country!
I love SIMH for development and test purposes. But in the end, everything goes to real
iron....
If the question is rhetorical, then until there is a
specific need, the
cost of
development of new hardware is probably not worth while.
This is a hobby. As such it doesn't need any justification. There is no reason.
Best wishes,
Philipp
--
http://www.hachti.de