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computers / comp.sys.ibm.ps2.hardware / [Update] 3270 Connection Adapters

SubjectAuthor
* [Update] 3270 Connection AdaptersTomas Slavotinek
`* Re: [Update] 3270 Connection AdaptersIBMMuseum
 +* Re: [Update] 3270 Connection AdaptersTomas Slavotinek
 |`- Re: [Update] 3270 Connection AdaptersIBMMuseum
 `- Re: [Update] 3270 Connection AdaptersLouis Ohland

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[Update] 3270 Connection Adapters

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From: slavoti...@gmail.com (Tomas Slavotinek)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: [Update] 3270 Connection Adapters
Date: Wed, 17 Nov 2021 23:21:30 +0100
Organization: csiph.com Internet News Service
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 by: Tomas Slavotinek - Wed, 17 Nov 2021 22:21 UTC

https://ardent-tool.com/communications/3270.html

-3 additional adapter revisions
-adapter photos
-RETAIN tips
-and more...

As always, thanks to David and Louis for the source material!

Complete changelog/credits here:
https://ardent-tool.com/other/Changelog.html#2021

Re: [Update] 3270 Connection Adapters

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Subject: Re: [Update] 3270 Connection Adapters
From: ibmmus...@gmail.com (IBMMuseum)
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 by: IBMMuseum - Fri, 19 Nov 2021 04:10 UTC

On Wednesday, November 17, 2021 at 3:21:33 PM UTC-7, Tomas Slavotinek wrote:
> https://ardent-tool.com/communications/3270.html
>
> -3 additional adapter revisions
> -adapter photos
> -RETAIN tips
> -and more...
>
> As always, thanks to David and Louis for the source material!
>
> Complete changelog/credits here:
> https://ardent-tool.com/other/Changelog.html#2021

Adapter POS ID now empirically checked on all "long" and "short" adapters: E7FFh is only the first (shiny Toshiba chip) "long" adapter, all others are E1FFh. The Attachmate 3270 adapter is supposed to be switchable between E7FFh and 677Fh. I'll show those next, including the DCA adapter that has an "AVE" extension!

Re: [Update] 3270 Connection Adapters

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From: slavoti...@gmail.com (Tomas Slavotinek)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Re: [Update] 3270 Connection Adapters
Date: Fri, 19 Nov 2021 09:12:55 +0100
Organization: csiph.com Internet News Service
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 by: Tomas Slavotinek - Fri, 19 Nov 2021 08:12 UTC

On 19.11.2021 5:10, IBMMuseum wrote:
> Adapter POS ID now empirically checked on all "long" and "short" adapters: E7FFh is only the first (shiny Toshiba chip) "long" adapter, all others are E1FFh. The Attachmate 3270 adapter is supposed to be switchable between E7FFh and 677Fh. I'll show those next, including the DCA adapter that has an "AVE" extension!
>

Nice work! Page updated accordingly.

The reversed DCA adapter is so strange. There must be a reason behind
it... (or maybe the layout person messed up that bad and they decided to
punish him by releasing the board as-is :-D)

Re: [Update] 3270 Connection Adapters

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Subject: Re: [Update] 3270 Connection Adapters
From: ibmmus...@gmail.com (IBMMuseum)
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 by: IBMMuseum - Fri, 19 Nov 2021 11:11 UTC

> The reversed DCA adapter is so strange. There must be a reason
> behind it... (or maybe the layout person messed up that bad and
> they decided to punish him by releasing the board as-is :-D)

I have the 8-bit version - and it is "reversed" the same way! Of course, it doesn't have the equivalent of the 'AVE' bus connection, despite the same "GRAPH INTERFACE" header. Let's ponder that for a moment in the weirdness that the adapter is in an 'AVE' slot but it's not - There aren't (m)any moving targets of microchannel systems it could go into.

SWAG is that there was an adjacent adapter in both instances that tied into the "GRAPH INTERFACE" and had a video output on the 8-bit system to a proprietary display - another '3270 PC' of sorts. On the microchannel side, it used the 'AVE' (so that the "GRAPH INTERFACE" board could be shared, maybe still with an optional display output). What information is going over the AVE bus in that instance? - It seems like this hasn't been commented on before.

I'm guessing that Peter had at least one adapter to mark-up the adapter ADF image with the text the way he did...

Re: [Update] 3270 Connection Adapters

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From: ohl...@charter.net (Louis Ohland)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Re: [Update] 3270 Connection Adapters
Date: Fri, 19 Nov 2021 08:01:57 -0600
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 by: Louis Ohland - Fri, 19 Nov 2021 14:01 UTC

https://ardent-tool.com/communications/3270.html

E7FFh is only the first (shiny Toshiba chip) "long" adapter, all others
are E1FFh.

@E7FF.ADF IBM 3270 Connection Ver A (Long w/ Toshiba 6320055 PGA)

@E1FF.ADF IBM 3270 Connection Ver B (Long/Short w/ Toshiba 16F0291 QFP)

On 11/18/2021 22:10, IBMMuseum wrote:
> On Wednesday, November 17, 2021 at 3:21:33 PM UTC-7, Tomas Slavotinek wrote:
>> https://ardent-tool.com/communications/3270.html
>>
>> -3 additional adapter revisions
>> -adapter photos
>> -RETAIN tips
>> -and more...
>>
>> As always, thanks to David and Louis for the source material!
>>
>> Complete changelog/credits here:
>> https://ardent-tool.com/other/Changelog.html#2021
>
> Adapter POS ID now empirically checked on all "long" and "short" adapters: E7FFh is only the first (shiny Toshiba chip) "long" adapter, all others are E1FFh. The Attachmate 3270 adapter is supposed to be switchable between E7FFh and 677Fh. I'll show those next, including the DCA adapter that has an "AVE" extension!
>

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