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slava
Joined: 24 Jul 2005
Posts: 379
Location: Dnipro, Ukraine
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 Posted: Tue Mar 28, 2006 3:02 pm Post subject: A trip to Moscow makes one learn a lot :-) Soviet chips |
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I've come from Moscow yesterday and brought back some chips with me. Here are some interesting things about the 1801 USSR microprocessor series.
Did you know that a KM1801VM3 with a small dot near the datecode is named KM1801VM3B ? And the one without the dot is a KM1801VM3A.
Have you ever seen a KN1801VM3 ? Not even talking about samples of this chip (ОП) ?
Did you know that KN1801VM4 exists?
A triangle on Soviet chips means that they are vulnerable to a possible static electricity damage. Two 580VM80 listed as an example.
This is all for now, will do a very interesting update to the site in a few days with these and lots more chips.
Any comments are welcome.
Cheers,
Slava
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Collecting soviet and western CPUs once again -- highfive to old-timers o/ |
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sammyc
Joined: 09 Dec 2005
Posts: 1668
Location: Scottish Borders
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| Posted: Tue Mar 28, 2006 3:58 pm Post subject: |
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Nice chips Slava
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4000+ chips.
4004-P4. |
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debs3759
Joined: 18 Jan 2006
Posts: 9477
Location: Northampton, Divided Kingdom
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| Posted: Tue Mar 28, 2006 4:15 pm Post subject: |
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Are the 1801 series processors Z80 clones?
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I can resist anything except temptation.
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slava
Joined: 24 Jul 2005
Posts: 379
Location: Dnipro, Ukraine
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| Posted: Tue Mar 28, 2006 4:27 pm Post subject: |
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| debs3759 wrote: | | Are the 1801 series processors Z80 clones? |
No, 1858 series is Z80.
1801 is a Soviet design, it's command set is DEC PDP-11 compatible. The series has been widely used in personal computers by the way.
Edit: Soviet personal comuters 
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debs3759
Joined: 18 Jan 2006
Posts: 9477
Location: Northampton, Divided Kingdom
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| Posted: Tue Mar 28, 2006 5:41 pm Post subject: |
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Thanks. I'll know what I'm looking at if I see one on eBay now 
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My graphics card database can be found at http://www.gpuzoo.com.
I can resist anything except temptation.
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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slava
Joined: 24 Jul 2005
Posts: 379
Location: Dnipro, Ukraine
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| Posted: Wed Mar 29, 2006 4:57 am Post subject: |
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| CPUShack wrote: | | I think that by 'being vulerable to static' would denote CMOS circuits rather then NMOS |
I don't know. How can two identical 580VM80 on my site - both by Kvazar, one with a triangle, one without one ( http://cpu.in.ua/collection_ussr_580.php ) be different in this way then? This is strange, but that's what I've been assured of.
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