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molka
Joined: 17 Mar 2011
Posts: 2416
Location: Budapest, Hungary
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 Posted: Sat Dec 28, 2013 7:27 am Post subject: VM 386SX+-T40 |
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I got this chip. But I'm not sure if it is a CPU or a support chip.
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molka
Joined: 17 Mar 2011
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Location: Budapest, Hungary
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CPUShack
Joined: 16 Jun 2003
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Location: State of Jefferson, USA
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molka
Joined: 17 Mar 2011
Posts: 2416
Location: Budapest, Hungary
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| Posted: Mon Jan 13, 2014 3:57 pm Post subject: |
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| CPUShack wrote: | whats the back of it look like?
looks like a rebranded/remarked TI 486 |
I'm afraid there is nothing special at the back. Just Korea SG and 27 in circles.
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aberco
Joined: 05 Sep 2013
Posts: 2655
Location: Paris France
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| Posted: Mon Jan 13, 2014 4:05 pm Post subject: |
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| Clearly a CPU, not a support chip |
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misace
Joined: 14 Sep 2012
Posts: 932
Location: Prague, Czechia
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| Posted: Thu Feb 13, 2014 1:20 pm Post subject: |
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Maybe they are still somewhere available as new parts:
http://www.alibaba.com/product-gs/818637028/_Electronic_component_VM386SX_T40.html
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Looking For Chips 386 J38605DX, Symphony FPU, Rise Tiger, MP6-II, Winchip 3&4, IDT C6-Early Logo, Nx686, Tesla 8088, L80C86, Bulgarian 8088, Pentium 4 QT69ES. |
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misace
Joined: 14 Sep 2012
Posts: 932
Location: Prague, Czechia
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| Posted: Thu Feb 13, 2014 1:24 pm Post subject: |
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"VMT ´91"
http://cpuscollection.free.fr/vmtechnology/index.html
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Looking For Chips 386 J38605DX, Symphony FPU, Rise Tiger, MP6-II, Winchip 3&4, IDT C6-Early Logo, Nx686, Tesla 8088, L80C86, Bulgarian 8088, Pentium 4 QT69ES. |
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molka
Joined: 17 Mar 2011
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misace
Joined: 14 Sep 2012
Posts: 932
Location: Prague, Czechia
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| Posted: Fri Feb 14, 2014 3:49 pm Post subject: |
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VMT
VMT Division, ASCII Corp.
8-1 Inaraimae
Tsukuba, Ibaraki 305
Japan
tel: +81-298-55-4004
fax: +81-298-55-1985
fax: +81-298-55-3855
No WWW site known.
VM486DLC2 486DLC compatible CPU
VM386SX+ 386SX compatible CPU
VM863S 286 real mode only CPU
VM867S 1K cache 50MHz 16bit CPU
VM863C110 CPU core ASSP
Since 1986 VMT is providing x86 compatible microprocessors mainly for embedded/consumer application.
All processors are VMT original design.
Faster than other source!
Pasted from Chip Directory:
http://margo.student.utwente.nl/stefan/chipdir/c/v.htm
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Looking For Chips 386 J38605DX, Symphony FPU, Rise Tiger, MP6-II, Winchip 3&4, IDT C6-Early Logo, Nx686, Tesla 8088, L80C86, Bulgarian 8088, Pentium 4 QT69ES. |
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misace
Joined: 14 Sep 2012
Posts: 932
Location: Prague, Czechia
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| Posted: Fri Feb 14, 2014 5:32 pm Post subject: |
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... In 1986, V.M.Technology(VMT) was founded. He (Masamichi Izumida) joined VMT as a first engineer and designed x86 compatible microprocessors.
In 1993, ASCII Corp acquired VMT's processor business. He continued x86 compatible microprocessor design at ASCII Corp. At ASCII Corp, he also supported Nexgen NX586 superscaler microprocessor, Acer Laboratory M1386 single chip PC processor ...
source: http://www.topscom.co.jp/?id=en/team.xml
So there´s a connection between VM386SX+-T40 and ALI M1386SX, package looks the same and both have similar code (B31806 vs. B80186).
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Looking For Chips 386 J38605DX, Symphony FPU, Rise Tiger, MP6-II, Winchip 3&4, IDT C6-Early Logo, Nx686, Tesla 8088, L80C86, Bulgarian 8088, Pentium 4 QT69ES. |
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CPUShack
Joined: 16 Jun 2003
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aberco
Joined: 05 Sep 2013
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Location: Paris France
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| Posted: Fri Feb 14, 2014 7:17 pm Post subject: |
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Pretty sure that these are 386s.
Now the question would be, is it an in house redesign or are they using a layout from another manufacturer? |
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CPUShack
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iPonRMA
Joined: 28 Oct 2012
Posts: 256
Location: Hungary
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iPonRMA
Joined: 28 Oct 2012
Posts: 256
Location: Hungary
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| Posted: Fri Jan 26, 2024 12:27 am Post subject: |
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| Here is the photo of the motherboard: |
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