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computers / comp.sys.ibm.ps2.hardware / Re: I shall call him - Mini-MAU

SubjectAuthor
* Re: I shall call him - Mini-MAUIBMMuseum
`* Re: I shall call him - Mini-MAUGrant Taylor
 `* Re: I shall call him - Mini-MAUIBMMuseum
  `* Re: I shall call him - Mini-MAUGrant Taylor
   `- Re: I shall call him - Mini-MAULouis Ohland

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Re: I shall call him - Mini-MAU

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Subject: Re: I shall call him - Mini-MAU
From: ibmmus...@gmail.com (IBMMuseum)
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 by: IBMMuseum - Sun, 2 Jan 2022 09:06 UTC

Reviving a long-dead thread - what would it take to make a 'mini-MAU' now? - RJ45 connections, a passive device much like a scaled-down 8228.

Re: I shall call him - Mini-MAU

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From: gtay...@tnetconsulting.net (Grant Taylor)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Re: I shall call him - Mini-MAU
Date: Sun, 2 Jan 2022 11:42:30 -0700
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 by: Grant Taylor - Sun, 2 Jan 2022 18:42 UTC

On 1/2/22 2:06 AM, IBMMuseum wrote:
> Reviving a long-dead thread - what would it take to make a 'mini-MAU'
> now? - RJ45 connections, a passive device much like a scaled-down 8228.

My understanding is that you can't make a /purely/ /passive/ MAU in that
the ring opens and closes as part of testing during insertion into the ring.

I think I've read that you can approximate it, but it's really a hack at
best.

--
Grant. . . .
unix || die

Re: I shall call him - Mini-MAU

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Subject: Re: I shall call him - Mini-MAU
From: ibmmus...@gmail.com (IBMMuseum)
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 by: IBMMuseum - Sun, 2 Jan 2022 20:47 UTC

>> Reviving a long-dead thread - what would it take to make a 'mini-MAU'
>> now? - RJ45 connections, a passive device much like a scaled-down 8228.
> My understanding is that you can't make a /purely/ /passive/ MAU in that
> the ring opens and closes as part of testing during insertion into the ring.
> I think I've read that you can approximate it, but it's really a hack at best.

[Retracted] showed me a picture of the inside of an 8228 - definitely more complex than I thought. So I'm looking (and probably Kevin Moonlight too) for an 8226 I guess. Maybe for where it falls for the Canadian-U.S. border so we aren't fighting over one unit.

Re: I shall call him - Mini-MAU

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From: gtay...@tnetconsulting.net (Grant Taylor)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Re: I shall call him - Mini-MAU
Date: Sun, 2 Jan 2022 17:54:56 -0700
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 by: Grant Taylor - Mon, 3 Jan 2022 00:54 UTC

On 1/2/22 1:47 PM, IBMMuseum wrote:
> [Retracted] showed me a picture of the inside of an 8228 - definitely
> more complex than I thought. So I'm looking (and probably Kevin
> Moonlight too) for an 8226 I guess. Maybe for where it falls for the
> Canadian-U.S. border so we aren't fighting over one unit.

I think that it is possible to make a minimal MAU that supports the
insertion testing that is necessary to have two Token-Ring hosts talk to
each other a la. a two port MAU. ;-)

--
Grant. . . .
unix || die

Re: I shall call him - Mini-MAU

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From: ohl...@charter.net (Louis Ohland)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Re: I shall call him - Mini-MAU
Date: Sun, 2 Jan 2022 19:04:39 -0600
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 by: Louis Ohland - Mon, 3 Jan 2022 01:04 UTC

I have tracked down the Texas Instrument datasheets for the 380 T/R
chipset. I have seen images of the 8228-like relays and R-C stuff.

So, you wanna be a Token Male?

On 1/2/2022 18:54, Grant Taylor wrote:
> On 1/2/22 1:47 PM, IBMMuseum wrote:
>> [Retracted] showed me a picture of the inside of an 8228 - definitely
>> more complex than I thought. So I'm looking (and probably Kevin
>> Moonlight too) for an 8226 I guess. Maybe for where it falls for the
>> Canadian-U.S. border so we aren't fighting over one unit.
>
> I think that it is possible to make a minimal MAU that supports the
> insertion testing that is necessary to have two Token-Ring hosts talk to
> each other a la. a two port MAU.  ;-)
>
>
>

1
server_pubkey.txt

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