Bet you didn't know...(PDP-11)

[Jerome H. Fine]

 >Johnny Billquist wrote:

> Well, you can maybe still buy Quckware PDP-11 boards, so there are 
> still new PDP-11 systems shipped. http://www.quickware.com/

Jerome Fine replies:

Any idea how much these boards cost and what the speed
ratio is vs the PDP-11/93?  I had heard that QED was getting
speeds of 6 times the PDP-11/93, but that was many years
ago.

Of course, a Pentium 4 running E11 can now achieve between
50 to 100 times a PDP-11/93.  Plus each emulated disk drive
can be many GigiBytes with I/O speeds also of 50 to 100 times
any "real" DEC drives.

Currently I am still using a 750 MHz Pentium 3 with 80 GigiByte
ATA 100 hard disk drives.  Under W98 SE and FAT32, a 2 GigiByte
file can be used under RT-11 (or RSX-11).  I can read/write all
32 MegaBytes of an RT-11 partition in a few seconds.  Since the
system has 768 MegBytes of RAM, the system caches the emulated
drive and after the first access, reads/writes are from memory.

So I can understand why Mentec now sells only emulators.  In
addition, E11 even supports a BCI adapter for commercial users
which allows a real DEC Qbus to be used when non-standard
hardware is still needed.

Sincerely yours,

Jerome Fine
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