4 Sep
2014
4 Sep
'14
1:01 p.m.
On Thu, Sep 4, 2014 at 12:18 PM, Roe Peterson <roeapeterson at gmail.com>
wrote:
TSX-11?
I have had on the back-burner for a long time a plan to rebuild 2.11bsd
using the floating point simulator so that I could run it on my QED, but
I've been way too sidetracked to take it on. The use of floating point is
pervasive throughout (even the 2nd stage bootloader uses FP instructions)
so a great deal would need to be rebuilt and/or fixed. And the FP
simulator is apparently untested in 2.11 so there's that...
- Josh
On Sep 4, 2014, at 1:03 PM, Ethan Dicks
<ethan.dicks at gmail.com> wrote:
> On Thu, Sep 4, 2014 at 2:45 PM, Glen Slick <glen.slick at gmail.com>
wrote:
...
QED993 CPU boards...
http://www.ebay.com/itm/200600166676
I bought one of those and was disappointed to discover that they do
not implement any floating point emulation at all and I had no luck
getting either 2.11BSD or RSTS/E 10.1 to run on it.
So what's the QED993 good for? RSX-11 or a really fast RT-11 box?
Who were they aiming at?
There was supposed to be a "daughter board" for the FPU, but I don't think
any actually exist. I have never figured out why they left this off the
processor board.
As far as a market, I once heard a rumour they were produced as
replacements for the nuclear industry.
-ethan