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DaynaFile Board

Iesca

Well-known member
Hi Everyone,

I recently acquired a DaynaFile with a 5.25" 360k drive in it. Due to some corrosion, I depopulated most of the controller board for cleaning and socketing, and to replace the pin headers.

Since it is (mostly) depopulated, with all the board redesigns happening (SE, SE/30, Classic, LC III...), is this something people would like a go at? I took photos with the original jumper settings prior to removing things, and I bought an EPROM programmer with the intent to dump the ROM (v3.1). The board itself is revision 2.1.

I can remove the last handful of components and do hi-res scans if someone is interested. Seems to be 4-layer.

Pic 1: Initial inspection...
Pic 2: Basic clean-up...
Pic 3: Taking a bath!
 

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bdurbrow

Well-known member
You are sufficiently close that you might as well go all the way... who knows when an opportunity like this will come up again. Also, when you put it back together again you will know that you've got all-new solder joints.

I don't see any thing there that would be difficult to deal with (like an ASIC); a reproduction should be fairly straightforward to do...
 

cheesestraws

Well-known member
Yeah, I think high resolution scans of the board if feasible would be a great idea: even if nobody does anything much with them for a while, this is an opportunity that might not occur again any time terribly soon
 

Iesca

Well-known member
Okay, finally got around to removing the final bits from the board and scanning it. Here we go! Will get a component list up next.
 

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  • Dayna PCB Top.png
    Dayna PCB Top.png
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  • Dayna PCB Bottom.png
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Iesca

Well-known member
And attached is a parts list! Some things are guesses or assumptions. In the case of RN1, it was destroyed in the process of removal, as was one of R2 and R3 (I was able to successfully remove one of them and measure it between the first and last pin).

If anyone makes any discoveries (mistakes, etc.), please let me know!
 

Attachments

  • DaynaFile Controller Board Parts List 2022-03-21.pdf
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Iesca

Well-known member
Here's a slightly updated PDF of the parts list that's easier to ready and better formatted. I also updated a few things (like the sizes of the DIP chips).
 

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  • DaynaFile Controller Board Parts List 2022-03-21 v2.pdf
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Iesca

Well-known member
Yet another parts list update! Googled some basic info on the different ICs, and reorganized a little bit of information.

I've also attached the datasheet for the floppy controller, SAB 2793B-P, as it was a bit hard to find. ("-P" appears to refer to the package type: Plastic DIP.)

EDIT: Also added some info on the various connectors and pin headers.
 

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  • Siemens SAB 2793B-2797B Datasheet.pdf
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  • DaynaFile Controller Board Parts List 2022-03-21 v3.1.pdf
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Last edited:

Iesca

Well-known member
Oooooo. This could be so cool for SCSI disk drives.
An exciting prospect!

New version of the parts list attached with some extraneous info removed and other info added.
 

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  • DaynaFile Controller Board Parts List v4 2022-03-22.pdf
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Iesca

Well-known member
And here is the ROM for version 3.1!
 

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  • DaynaFile Version 3.1.bin.zip
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