12 Jun
2009
12 Jun
'09
5:58 p.m.
Brad Parker wrote:
Eric Smith wrote:
I'm not sure what 50 mhz is, but 50 mHz would have a cycle
time of 20
seconds. Sorry, once again I'm being overly pedantic, as it was obvious
that you really meant 50 MHz.
Anyhow, I'm quite impressed with your project. I happen to have the
same Digilent board with the 3S1000, so I plan to hook up an IDE drive
and try it out. Thanks for making it available!
Best regards,
Eric
Brad Parker wrote:
sorry, I don't get the joke. clock is
50mhz, or 20ns; each state is
one clock and on average
an instruction is 3 states. I calculated 10mips. it seems to boot
much faster than my 11/44 :-)
what did I miss? I did a "direct decode" pdp-11 in
verilog recently just to see how
big it would be (and because I was frustrated with the pop-11
project). It fits nicely & boots RT11 at 50mhz.
At that speed, surely it
hasn't finished booting RT11 yet!