Hitachi Hitac MCM
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isa-d



Joined: 16 Aug 2006
Posts: 2984
Location: Italy

PostPosted: Wed Jul 24, 2024 11:50 am    Post subject: Hitachi Hitac MCM Reply with quote

I'm confused about an Hitachi Hitac MCM similar to this
https://www.ebay.com/itm/265863527355




Clearly has a wrong description because isn't a 200 series but is an MP5800 or MP6000

I would ask for which bought these box with this MCM
https://www.cpu-world.com/forum/viewtopic.php?t=38847&highlight=hitachi+mcm
if there is a label around with the exact model like this box for MP5600
https://www.befr.ebay.be/itm/262609168346
or if you have more information from another source

thanks
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Chriscosmo12



Joined: 14 May 2023
Posts: 426
Location: Texas, USA

PostPosted: Thu Jul 25, 2024 6:05 pm    Post subject: Reply with quote

I would also like to know as well since I've got a good few of these all with a variety of designs and in two different sizes. Curious what the 200 series look like if that's not what these are. I also would not personally buy from that seller, they overcharge a ton and are not that pleasant to talk with.
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dstraney



Joined: 15 Oct 2023
Posts: 113

PostPosted: Thu Jul 25, 2024 8:34 pm    Post subject: Reply with quote

Chriscosmo12 wrote:
...they overcharge a ton...

Holy shit, I see what you mean - took a look out of curiosity since I do like weird MCMs, but did not expect every one of theirs to be multiple $K (USD). Half a year of rent for modules where similar ones go for 1/10th the price, no thank you.

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isa-d



Joined: 16 Aug 2006
Posts: 2984
Location: Italy

PostPosted: Fri Jul 26, 2024 2:10 am    Post subject: Reply with quote

Chriscosmo12 wrote:
I would also like to know as well since I've got a good few of these all with a variety of designs and in two different sizes. Curious what the 200 series look like if that's not what these are. I also would not personally buy from that seller, they overcharge a ton and are not that pleasant to talk with.



1) these are the picture of Hitac 200 series cards, they are composed by ECL chips, they aren't MCM's
I have some of these ECL for sale when I will find time to organize everythings
original documents
https://www.hitachihyoron.com/jp/pdf/1981/09/1981_09_11.pdf
https://www.hitachihyoron.com/jp/pdf/1981/09/1981_09_10.pdf




2) I'm sure these MCM's are from MP5xxx series
original document
http://museum.ipsj.or.jp/en/computer/main/0093.html



but problem is which series are?
interesting you have two size of them and there are air cooled ( https://www.ebay.com/itm/266206241120 and https://www.befr.ebay.be/itm/262609168346) and water cooled ( https://www.reddit.com/r/geek/comments/9mvcap/an_prey2k_hitachi_skyline_water_cooled_mainframe/ and https://x.com/aschilling/status/1740798024668819797)

so I really remain confused by them
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Chriscosmo12



Joined: 14 May 2023
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Location: Texas, USA

PostPosted: Fri Jul 26, 2024 8:13 am    Post subject: Reply with quote

Yeah there is a big difference there with the 200 series being cards. Also that module in the MP5600 listing looks much smaller than the ones I have with 6x6 and 5x5 die layouts. I assumed my smaller 5x5 die modules were MP5600 while the bigger ones were MP5800, but that box does say MP5600 in that listing. Unfortunately none of mine have boxes, but maybe someone who participated in the group buy can see if there's a sticker on the front.
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