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CHips
Joined: 01 May 2016
Posts: 834
Location: Switzerland
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 Posted: Tue Feb 28, 2017 9:18 am Post subject: Complete Intel C4004-C8086 (w/o suffixes) classic collection |
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Just got recently and finally a C8085.
Now, the family is complete!
And all are in working condition  !
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Bator
Joined: 28 Oct 2013
Posts: 1285
Location: Russia / Yakutia & Siberia
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| Posted: Tue Feb 28, 2017 9:20 am Post subject: |
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Cool!!! 
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Marcin
Joined: 02 Jan 2005
Posts: 8519
Location: Poland
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Borris70
Joined: 24 Apr 2003
Posts: 988
Location: Germany
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| Posted: Tue Feb 28, 2017 2:12 pm Post subject: |
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nice 
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bccwchan
Joined: 20 Sep 2004
Posts: 2585
Location: Hong Kong
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| Posted: Tue Feb 28, 2017 8:01 pm Post subject: |
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| Very good vintage collection |
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rjluna2
Joined: 27 Oct 2014
Posts: 1302
Location: Hiram, GA, USA
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| Posted: Wed Mar 01, 2017 7:49 am Post subject: |
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| Nice set of 1970s Intel's family of CPU |
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Yann
Joined: 29 Oct 2003
Posts: 47
Location: France
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| Posted: Wed Mar 08, 2017 4:54 am Post subject: |
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| Very nice C8085 and C4004 gray traces. |
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yy2013
Joined: 12 Sep 2009
Posts: 739
Location: Nagoya, Japan
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| Posted: Wed Mar 08, 2017 7:16 pm Post subject: |
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Very nice set!
By the way, what is the difference between 8085 and 8085A? |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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| Posted: Wed Mar 08, 2017 9:48 pm Post subject: |
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There were some slight changes
the HOLD input does slightly different things (ALE is NOT tristated on the A and IS on the non-A)
INTR is sampled on the last cycle of an instruction on the 8085 and second to last on 8085A
There was also numerous timing changes, mostly tightening timing for better performance (data is valid sooner, or longer)
This helped allow for higher clock speeds
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hugo929
Joined: 27 Oct 2006
Posts: 6163
Location: China
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| Posted: Wed Mar 08, 2017 9:52 pm Post subject: |
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| CPUShack wrote: | There were some slight changes
the HOLD input does slightly different things (ALE is NOT tristated on the A and IS on the non-A)
INTR is sampled on the last cycle of an instruction on the 8085 and second to last on 8085A
There was also numerous timing changes, mostly tightening timing for better performance (data is valid sooner, or longer)
This helped allow for higher clock speeds |
very professional!
thought you are a senior electronic engineer. LOL
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yy2013
Joined: 12 Sep 2009
Posts: 739
Location: Nagoya, Japan
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| Posted: Thu Mar 09, 2017 6:42 pm Post subject: |
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Thanks a lot for the valuable information!
The difference between 8080 and 8080A is well known, but I could not find any information about 8085.
| CPUShack wrote: | There were some slight changes
the HOLD input does slightly different things (ALE is NOT tristated on the A and IS on the non-A)
INTR is sampled on the last cycle of an instruction on the 8085 and second to last on 8085A
There was also numerous timing changes, mostly tightening timing for better performance (data is valid sooner, or longer)
This helped allow for higher clock speeds |
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Chook
Joined: 29 Oct 2008
Posts: 2250
Location: Australia
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| Posted: Fri Mar 10, 2017 12:55 am Post subject: |
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Very nice collection! I wonder why Intel didn't make a white ceramic C8008?
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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| Posted: Fri Mar 10, 2017 2:05 am Post subject: |
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| Chook wrote: | | Very nice collection! I wonder why Intel didn't make a white ceramic C8008? |
Probably because the purple was what was available (Intel bought the packages, they didnt generally make them)
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yk
Joined: 17 Oct 2011
Posts: 539
Location: CN
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| Posted: Fri Mar 10, 2017 7:54 am Post subject: |
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| very nice!! |
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