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JardaXor
Joined: 16 Aug 2012
Posts: 231
Location: Czech Republic
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 Posted: Sat Sep 08, 2012 9:03 am Post subject: Soviet K573RF5 discussion |
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Russian 2KBx8 pink ceramic - I found some in the scrap, but looks like new and unused.
I'm not sure about the manufacture date of pink ceramic - I know only two months 8902 and 8901.
Last edited by JardaXor on Mon Sep 10, 2012 4:29 am; edited 1 time in total |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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JardaXor
Joined: 16 Aug 2012
Posts: 231
Location: Czech Republic
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| Posted: Sat Sep 08, 2012 12:17 pm Post subject: |
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| CPUShack wrote: | | week 2 1989 |
Yes, sure, but only these two I know - 1. a 2. week of 1989, no more. |
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jrmunro
Joined: 01 Feb 2003
Posts: 3149
Location: Vancouver, Canada
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| Posted: Sat Sep 08, 2012 3:24 pm Post subject: |
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| It`s an Intel 2716 clone |
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berni
Joined: 17 May 2011
Posts: 59
Location: Germany
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| Posted: Sun Sep 09, 2012 1:49 am Post subject: |
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In Russian date codes stand the first two digits for the year and the second two digits for the month. Here February 1989...
Cheers, Berni |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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| Posted: Sun Sep 09, 2012 2:02 am Post subject: |
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| berni wrote: | In Russian date codes stand the first two digits for the year and the second two digits for the month. Here February 1989...
Cheers, Berni |
you are correct, I had forgotten.
also, sometimes they are backwards, MMYY instead of YYMM
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JardaXor
Joined: 16 Aug 2012
Posts: 231
Location: Czech Republic
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| Posted: Sun Sep 09, 2012 2:17 am Post subject: |
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Of course it's month, right 
But my question is - exist pink RF5 from another date than 8901 and 8902? Have somebody different code? |
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berni
Joined: 17 May 2011
Posts: 59
Location: Germany
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| Posted: Sun Sep 09, 2012 2:18 am Post subject: |
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| I was not ware of the backward notation, never seen it... Thanks for the Info, Berni |
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berni
Joined: 17 May 2011
Posts: 59
Location: Germany
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| Posted: Sun Sep 09, 2012 2:35 am Post subject: |
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@JardaXor
I only have a white versions of this type but with the same date code as yours...
Berni |
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CPUShack
Joined: 16 Jun 2003
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JardaXor
Joined: 16 Aug 2012
Posts: 231
Location: Czech Republic
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| Posted: Sun Sep 09, 2012 3:02 am Post subject: |
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About MMYY / YYMM change - I have 2 russian EPROMs with changing this codes - one month MMYY and next month YYMM.
I will find and send photo... |
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berni
Joined: 17 May 2011
Posts: 59
Location: Germany
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| Posted: Sun Sep 09, 2012 3:06 am Post subject: |
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| I can already see it at the photos from CPUShack... and I also checked some of my parts and voila, there are the MMYY and YYMM swaps. I just never paid attention... |
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Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
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| Posted: Sun Sep 09, 2012 3:38 am Post subject: |
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| Switchover from MMYY to YYMM in general happened in January 1986. But there are cases of using YYMM form as early as 1984. Also from late 80's sometimes a year/week date system was used. |
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Guest
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| Posted: Sun Sep 09, 2012 11:06 am Post subject: |
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Do You have data of production of RF5 (and another EPROMs), Elar?
From - to and which factory...? |
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Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
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| Posted: Sun Sep 09, 2012 11:17 am Post subject: |
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| Anonymous wrote: | Do You have data of production of RF5 (and another EPROMs), Elar?
From - to and which factory...? |
I'm afraid not. |
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