Re: [Simh] PDP-8 FPP register name descriptions

[Ray Jewhurst]

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  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"  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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>
>
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Re: [Simh] PDP-8 FPP register name descriptions

[Ray Jewhurst]

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"  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
> ___
> Simh mailing list
> Simh@trailing-edge.com
> http://mailman.trailing-edge.com/mailman/listinfo/simh
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Re: [Simh] PDP-8 FPP register name descriptions

[Rick Murphy]

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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Re: [Simh] PDP-8 FPP register name descriptions

[Johnny Billquist]

Hi.

On 2016-04-08 22:15, 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.


You're looking for things like programming info then, in order to see 
how it is used, and names of instructions and so?


Chapter 3 of 
http://bitsavers.informatik.uni-stuttgart.de/pdf/dec/pdp8/handbooks/MinicomputerHandbook_1976.pdf 
might be enough.


If you want more internal details, 
http://bitsavers.informatik.uni-stuttgart.de/pdf/dec/pdp8/pdp8a/EK-FPP8A-OP-001_FPP8-A_UsersMan_Dec76.pdf 
might be good. Check that whole directory, and you'll find more 
documentation as well.


Johnny

--
Johnny Billquist  || "I'm on a bus
  ||  on a psychedelic trip
email: b...@softjar.se ||  Reading murder books
pdp is alive! ||  tryin' to stay hip" - B. Idol
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[Simh] PDP-8 FPP register name descriptions

[Ray Jewhurst]

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.

Thank
Ray
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[Simh] Pop culture references to DEC and VAX

[Armistead, Jason .]

And now for a bit of a diversion after an otherwise fairly quiet week on the 
SIMH mailing list ...

Last week I was watching a DVR-ed recording of Arrow on the CW network 
(http://www.cwtv.com/shows/arrow ). The particular episode was "Beacon of 
Hope".  Just a few minutes in, as the last of the opening credits are 
finishing, one the main characters, Felicity Smoak, is working on a hard 
problem when her tech-geek offsider Curtis makes a reference to Digital 
Equipment Corporation and them spending $700K on the first VAX.  I had to hit 
rewind to make sure I heard that correctly.

Obviously someone who writes for the show is fond of old computer systems from 
the good-old days when DEC rule the minicomputer space, or they did a little 
bit of Googling and perhaps just plucked the $700K figure out of thin air !



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