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Slava
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 Posted: Sun Jul 24, 2005 3:01 am Post subject: USSR chip discussion |
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This topic goes to Genna and others interested in Eastern chips:
First of all, I've got a couple of KR1858VM1 in plastic with letters OP (russian) near datecode. Could this mean eng. sample (Opitniy ekzemplyar) ? Besides, all the three 1858's have numbers printed on them - 3, 945, 948. I suspect there was a sample series of 1000 chips..... is this possible? Datecodes are identical: 9302.
Secondly, what does a small triangle printed on some soviet chips mean? Are those mil-spec ones? I have two 580VM80's: one with a triangle, one without it. Also, IM1821VM85A's have the triangle.
Next, what is a T34VM1 ? I know it is a clone of Z80, but why so strange series? T34.....? Kinda a tank 
Best regards, Slava, Ukraine |
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slava
Joined: 24 Jul 2005
Posts: 379
Location: Dnipro, Ukraine
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| Posted: Sun Jul 24, 2005 3:48 am Post subject: |
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Genna, forgot to mention, that the T34VM1 that you and me have has the OP mark too. Yours is stamped "306", mine - "467". I REALLY suspect it is an engeneering sample.
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Collecting soviet and western CPUs once again -- highfive to old-timers o/ |
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Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
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| Posted: Sun Jul 24, 2005 4:51 am Post subject: |
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| Quote: | | First of all, I've got a couple of KR1858VM1 in plastic with letters OP (russian) near datecode. Could this mean eng. sample (Opitniy ekzemplyar) ? Besides, all the three 1858's have numbers printed on them - 3, 945, 948. I suspect there was a sample series of 1000 chips..... is this possible? Datecodes are identical: 9302. |
Yes, OP on soviet chips is equivalent to engineering sample. "Opitniy" translates to experimental.
| Quote: | | Secondly, what does a small triangle printed on some soviet chips mean? Are those mil-spec ones? I have two 580VM80's: one with a triangle, one without it. Also, IM1821VM85A's have the triangle. |
Don't know what triangle means, but symbol for military chips is rombic shape like on this 589IK02:
And allmost allways K is missing then from device name also. |
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slava
Joined: 24 Jul 2005
Posts: 379
Location: Dnipro, Ukraine
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| Posted: Sun Jul 24, 2005 5:16 am Post subject: |
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| Elar wrote: | | symbol for military chips is rombic shape like on this 589IK02 |
Possible. But you can also see the little triangle there
Thanks for help with the OP. By the way, I know russian perfectly 
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slava
Joined: 24 Jul 2005
Posts: 379
Location: Dnipro, Ukraine
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| Posted: Sun Jul 24, 2005 5:47 am Post subject: |
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Okay, Elar, look at this chip. I have exactly the same one here.
It is not military, because has an M letter before 1804 series. That is for sure. BUT it has the rhomb.
I stay with the triangle 
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Collecting soviet and western CPUs once again -- highfive to old-timers o/
Last edited by slava on Sun Jul 24, 2005 5:47 am; edited 1 time in total |
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Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
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| Posted: Sun Jul 24, 2005 5:47 am Post subject: |
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| slava wrote: | | Elar wrote: | | symbol for military chips is rombic shape like on this 589IK02 |
Possible. But you can also see the little triangle there |
I know it for sure.
| Quote: | | Thanks for help with the OP. By the way, I know russian perfectly |
Same here, almost. |
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Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
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| Posted: Sun Jul 24, 2005 5:51 am Post subject: Abot M1804 |
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| slava wrote: | Okay, Elar, look at this chip. I have exactly the same one here.
It is not military, because has an M letter before 1804 series. That is for sure. BUT it has the rhomb.
I stay with the triangle |
It is military chip. Regular, consumer grade device has KM1804 in its name. |
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slava
Joined: 24 Jul 2005
Posts: 379
Location: Dnipro, Ukraine
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| Posted: Sun Jul 24, 2005 5:58 am Post subject: Re: Abot M1804 |
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| Elar wrote: | | It is military chip. Regular, consumer grade device has KM1804 in its name. |
Understood, thanks again.  
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gshv
Joined: 01 Feb 2003
Posts: 7898
Location: Fairfax, VA USA
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| Posted: Sun Jul 24, 2005 1:33 pm Post subject: |
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"OP" probably means "opytnaya partia", i.e. something like "test lot". The number on these chips is a lot number. This would explain why more than one chip is marked with the same number:
http://www.cpu-world.com/CPUs/Z80/USSR-T34VM1.html
http://www.cpu-museum.com/z80_e.htm
This also matches what I've heard before about T34VM1- that T34VM1 were the first Z80-compatible processors produced as test lots by Angstrem. T34VM1 is probably an internal name used just for those test lots.
BTW, thanks for pointing to those "OP" letters on the chip. I didn't even notice them before your post.
Gennadiy |
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slava
Joined: 24 Jul 2005
Posts: 379
Location: Dnipro, Ukraine
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| Posted: Sun Jul 24, 2005 5:47 pm Post subject: |
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If you do know, what does that little triangle on some chips mean? I'm trying to get information about it from different sources, but nobody knows. 
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gshv
Joined: 01 Feb 2003
Posts: 7898
Location: Fairfax, VA USA
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| Posted: Sun Jul 24, 2005 9:41 pm Post subject: |
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No, I don't know what the triangle means.
Gennadiy |
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