On 2016-04-09 17:51, Ray Jewhurst wrote:
Actually, the FPP is not in the manual. So that is why I tried the
documentation on Bitsavers and needed help to fill in the gaps.
Which manual?
Johnny
Thanks
Ray
On Apr 9, 2016 10:58 AM, "Johnny Billquist" <[email protected]
<mailto:[email protected]>> wrote:
On 2016-04-09 13:32, Ray Jewhurst wrote:
Those registers are in the pdp8_fpp.c file. As for the other ones, I
already utilized them.
But then you do not need documentation on the FPP8A, so the question
at the start was misleading. We're now talking about the
implementation in SIMH... The registers of the FPP8A are all
documented in the Users Manual.
Johnny
Thanks
Ray
On Apr 9, 2016 5:08 AM, "Johnny Billquist" <[email protected]
<mailto:[email protected]>
<mailto:[email protected] <mailto:[email protected]>>> wrote:
Where do you find those registers? I'm looking at the FPP8A
Users
Manual, and cannot find them.
In that manual you have all the FPP8A registers listed in
table 2-1.
Johnny
On 2016-04-09 04:19, Ray Jewhurst wrote:
Hello,
The register I don't know are FPAC0-4, CMD, XRA, SSF
and FLAG.
To be
honest with you, I know very little about FFP's. The
most I
really know
about floating point operations is the difference between a
float and a
double! lol. I am more of an end user and
administrator than I am a
coder. I am glad though that everyone is so helpful
and patient
with me.
Thanks
Ray
On Fri, Apr 8, 2016 at 9:04 PM, Ray Jewhurst
<[email protected] <mailto:[email protected]>
<mailto:[email protected] <mailto:[email protected]>>
<mailto:[email protected]
<mailto:[email protected]> <mailto:[email protected]
<mailto:[email protected]>>>>
wrote:
I already used EK-FFP8A-MM-001 and the Handbook
and could
figure out
about half the registers. I'm not by my code
right now but
I will
send a message listing the ones I couldn't figure
out later
tonight.
While I was thinking of amending the documentation to
include the FFP8A.
Thanks
Ray
On Apr 8, 2016 7:15 PM, "Rick Murphy"
<[email protected] <mailto:[email protected]>
<mailto:[email protected] <mailto:[email protected]>>
<mailto:[email protected]
<mailto:[email protected]> <mailto:[email protected]
<mailto:[email protected]>>>>
wrote:
At 04:15 PM 4/8/2016, Ray Jewhurst wrote:
Hello,
I'm trying to expand the help files on some of
simulators
and noticed that I can't find much
information for
the PDP-8
FPP. I have current documentation but
there are no
references to the FPP at all. If anyone
can point
me in
the right direction, I'd really
appreciate. I'm also
checking to see if I can get any relevant
information from
Bitsavers.
The most comprehensive documentation is the
Maintenance
Manual:
http://bitsavers.informatik.uni-stuttgart.de/pdf/dec/pdp8/pdp8a/EK-FPP8A-MM-001_FPP8-A_Maint_Sep76.pdf
Chapter 2 has the register info.
Also, FPP-12 documentation, for example
http://bitsavers.trailing-edge.com/pdf/dec/pdp12/fpp12/
The FPP-8A and FPP-12 are register compatible. The
FPP-8 has a
few tweaks but it's generally quite compatible.
If you want any review of whatever
documentation you end up
writing, I'll be happy to help (I did a bunch
of work
on the
SIMH FPP-8A simulation to get it working and
make it
compatible
with the real FPP.)
-Rick
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--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: [email protected] <mailto:[email protected]>
<mailto:[email protected] <mailto:[email protected]>> ||
Reading murder books
pdp is alive! || tryin' to stay hip" -
B. Idol
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--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: [email protected] <mailto:[email protected]> ||
Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: [email protected] || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
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