<p dir="ltr">Those registers are in the pdp8_fpp.c file. As for the other ones, I already utilized them.</p>
<p dir="ltr">Thanks <br>
Ray</p>
<div class="gmail_quote">On Apr 9, 2016 5:08 AM, "Johnny Billquist" <<a href="mailto:bqt@softjar.se">bqt@softjar.se</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Where do you find those registers? I'm looking at the FPP8A Users Manual, and cannot find them.<br>
In that manual you have all the FPP8A registers listed in table 2-1.<br>
<br>
Johnny<br>
<br>
On 2016-04-09 04:19, Ray Jewhurst wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hello,<br>
<br>
The register I don't know are FPAC0-4, CMD, XRA, SSF and FLAG. To be<br>
honest with you, I know very little about FFP's. The most I really know<br>
about floating point operations is the difference between a float and a<br>
double! lol. I am more of an end user and administrator than I am a<br>
coder. I am glad though that everyone is so helpful and patient with me.<br>
<br>
Thanks<br>
Ray<br>
<br>
On Fri, Apr 8, 2016 at 9:04 PM, Ray Jewhurst <<a href="mailto:raywjewhurst@gmail.com" target="_blank">raywjewhurst@gmail.com</a><br>
<mailto:<a href="mailto:raywjewhurst@gmail.com" target="_blank">raywjewhurst@gmail.com</a>>> wrote:<br>
<br>
I already used EK-FFP8A-MM-001 and the Handbook and could figure out<br>
about half the registers. I'm not by my code right now but I will<br>
send a message listing the ones I couldn't figure out later tonight.<br>
While I was thinking of amending the documentation to include the FFP8A.<br>
<br>
Thanks<br>
Ray<br>
<br>
On Apr 8, 2016 7:15 PM, "Rick Murphy" <<a href="mailto:simh@rickmurphy.net" target="_blank">simh@rickmurphy.net</a><br>
<mailto:<a href="mailto:simh@rickmurphy.net" target="_blank">simh@rickmurphy.net</a>>> wrote:<br>
<br>
At 04:15 PM 4/8/2016, Ray Jewhurst wrote:<br>
<br>
Hello,<br>
<br>
I'm trying to expand the help files on some of simulators<br>
and noticed that I can't find much information for the PDP-8<br>
FPP. I have current documentation but there are no<br>
references to the FPP at all. If anyone can point me in<br>
the right direction, I'd really appreciate. I'm also<br>
checking to see if I can get any relevant information from<br>
Bitsavers.<br>
<br>
<br>
The most comprehensive documentation is the Maintenance Manual:<br>
<a href="http://bitsavers.informatik.uni-stuttgart.de/pdf/dec/pdp8/pdp8a/EK-FPP8A-MM-001_FPP8-A_Maint_Sep76.pdf" rel="noreferrer" target="_blank">http://bitsavers.informatik.uni-stuttgart.de/pdf/dec/pdp8/pdp8a/EK-FPP8A-MM-001_FPP8-A_Maint_Sep76.pdf</a><br>
<br>
Chapter 2 has the register info.<br>
<br>
Also, FPP-12 documentation, for example<br>
<a href="http://bitsavers.trailing-edge.com/pdf/dec/pdp12/fpp12/" rel="noreferrer" target="_blank">http://bitsavers.trailing-edge.com/pdf/dec/pdp12/fpp12/</a><br>
The FPP-8A and FPP-12 are register compatible. The FPP-8 has a<br>
few tweaks but it's generally quite compatible.<br>
<br>
If you want any review of whatever documentation you end up<br>
writing, I'll be happy to help (I did a bunch of work on the<br>
SIMH FPP-8A simulation to get it working and make it compatible<br>
with the real FPP.)<br>
-Rick<br>
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</blockquote>
<br>
-- <br>
Johnny Billquist || "I'm on a bus<br>
|| on a psychedelic trip<br>
email: <a href="mailto:bqt@softjar.se" target="_blank">bqt@softjar.se</a> || Reading murder books<br>
pdp is alive! || tryin' to stay hip" - B. Idol<br>
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