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Old September 20th 03, 02:59 AM
kenneth scharf
 
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Default Looking for old microprocessors

Does anybody know where I can get a Harris or Intersil
HD6100, HD6120, IM6100, or IM6120 microprocessor (cmos pdp-8)?

I used to work for Digital, and thought it would be an interresting project
to homebrew a PDP-8 system. I have a T11 microprocessor chip in the junbox
someplace, so a PDP-11 system is also a possibility.


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Old September 20th 03, 06:28 AM
Dave, AA6YQ
 
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No cheating! If you're going to homebrew a PDP-8, you have to build it out
of discrete TTL.

73,

Dave, AA6YQ
Data General, 1972 - 1981
Designer of the Nova 2, Nova 3, MP200, and microEclipse CPUs, as
well as some parts of FHP and EGO


"kenneth scharf" wrote in message
...
Does anybody know where I can get a Harris or Intersil
HD6100, HD6120, IM6100, or IM6120 microprocessor (cmos pdp-8)?

I used to work for Digital, and thought it would be an interresting

project
to homebrew a PDP-8 system. I have a T11 microprocessor chip in the

junbox
someplace, so a PDP-11 system is also a possibility.




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Old September 20th 03, 09:13 AM
Ken Luther
 
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Default

Boy -- Have you got little to do, or what!!!!

"Dave, AA6YQ" wrote in message
news:lARab.522300$YN5.348403@sccrnsc01...
No cheating! If you're going to homebrew a PDP-8, you have to build it out
of discrete TTL.

73,

Dave, AA6YQ
Data General, 1972 - 1981
Designer of the Nova 2, Nova 3, MP200, and microEclipse CPUs, as
well as some parts of FHP and EGO


"kenneth scharf" wrote in message
...
Does anybody know where I can get a Harris or Intersil
HD6100, HD6120, IM6100, or IM6120 microprocessor (cmos pdp-8)?

I used to work for Digital, and thought it would be an interresting

project
to homebrew a PDP-8 system. I have a T11 microprocessor chip in the

junbox
someplace, so a PDP-11 system is also a possibility.






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Old September 20th 03, 09:13 AM
Ken Luther
 
Posts: n/a
Default

Boy -- Have you got little to do, or what!!!!

"Dave, AA6YQ" wrote in message
news:lARab.522300$YN5.348403@sccrnsc01...
No cheating! If you're going to homebrew a PDP-8, you have to build it out
of discrete TTL.

73,

Dave, AA6YQ
Data General, 1972 - 1981
Designer of the Nova 2, Nova 3, MP200, and microEclipse CPUs, as
well as some parts of FHP and EGO


"kenneth scharf" wrote in message
...
Does anybody know where I can get a Harris or Intersil
HD6100, HD6120, IM6100, or IM6120 microprocessor (cmos pdp-8)?

I used to work for Digital, and thought it would be an interresting

project
to homebrew a PDP-8 system. I have a T11 microprocessor chip in the

junbox
someplace, so a PDP-11 system is also a possibility.






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Old September 20th 03, 04:43 PM
John R. Strohm
 
Posts: n/a
Default

"Dave, AA6YQ" wrote in message
news:lARab.522300$YN5.348403@sccrnsc01...
No cheating! If you're going to homebrew a PDP-8, you have to build it out
of discrete TTL.

73,

Dave, AA6YQ
Data General, 1972 - 1981
Designer of the Nova 2, Nova 3, MP200, and microEclipse CPUs, as
well as some parts of FHP and EGO


I thought FHP and EGO were completely separate, competing projects?
(Admittedly, my only source is Kidder's book.)




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Old September 21st 03, 08:06 AM
Dave, AA6YQ
 
Posts: n/a
Default

EGO was started by FHP engineers that declined to relocate, one of which was
me. The projects only became competitive after FHP moved to North Carolina
and expanded its objectives. The book is accurate on this point, and pretty
much everything else.

73,

Dave, AA6YQ

"John R. Strohm" wrote in message
...
"Dave, AA6YQ" wrote in message
news:lARab.522300$YN5.348403@sccrnsc01...
No cheating! If you're going to homebrew a PDP-8, you have to build it

out
of discrete TTL.

73,

Dave, AA6YQ
Data General, 1972 - 1981
Designer of the Nova 2, Nova 3, MP200, and microEclipse CPUs,

as
well as some parts of FHP and EGO


I thought FHP and EGO were completely separate, competing projects?
(Admittedly, my only source is Kidder's book.)




  #7   Report Post  
Old September 21st 03, 08:06 AM
Dave, AA6YQ
 
Posts: n/a
Default

EGO was started by FHP engineers that declined to relocate, one of which was
me. The projects only became competitive after FHP moved to North Carolina
and expanded its objectives. The book is accurate on this point, and pretty
much everything else.

73,

Dave, AA6YQ

"John R. Strohm" wrote in message
...
"Dave, AA6YQ" wrote in message
news:lARab.522300$YN5.348403@sccrnsc01...
No cheating! If you're going to homebrew a PDP-8, you have to build it

out
of discrete TTL.

73,

Dave, AA6YQ
Data General, 1972 - 1981
Designer of the Nova 2, Nova 3, MP200, and microEclipse CPUs,

as
well as some parts of FHP and EGO


I thought FHP and EGO were completely separate, competing projects?
(Admittedly, my only source is Kidder's book.)




  #8   Report Post  
Old September 20th 03, 04:43 PM
John R. Strohm
 
Posts: n/a
Default

"Dave, AA6YQ" wrote in message
news:lARab.522300$YN5.348403@sccrnsc01...
No cheating! If you're going to homebrew a PDP-8, you have to build it out
of discrete TTL.

73,

Dave, AA6YQ
Data General, 1972 - 1981
Designer of the Nova 2, Nova 3, MP200, and microEclipse CPUs, as
well as some parts of FHP and EGO


I thought FHP and EGO were completely separate, competing projects?
(Admittedly, my only source is Kidder's book.)


  #9   Report Post  
Old September 22nd 03, 03:58 AM
R J Carpenter
 
Posts: n/a
Default


"Dave, AA6YQ" wrote in message
news:lARab.522300$YN5.348403@sccrnsc01...
No cheating! If you're going to homebrew a PDP-8, you have to build it out
of discrete TTL.


I had my PDP-8S work-alike operational about 30 years ago. I built it from
TTL.


  #10   Report Post  
Old September 22nd 03, 06:43 AM
Dave, AA6YQ
 
Posts: n/a
Default

Very cool. What did you use for memory?

73,

Dave, AA6YQ

"R J Carpenter" wrote in message
...

"Dave, AA6YQ" wrote in message
news:lARab.522300$YN5.348403@sccrnsc01...
No cheating! If you're going to homebrew a PDP-8, you have to build it

out
of discrete TTL.


I had my PDP-8S work-alike operational about 30 years ago. I built it

from
TTL.






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