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]>> 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]>>>
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]>>>
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]> ||
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] || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
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