H8-H17 Floppy Controller Schematics for Review.

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norberto.collado koyado.com

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Nov 14, 2022, 2:43:22 AM11/14/22
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Here is the preliminary information for the new full length H17 controller with VDIP1 support.

 

Link: http://koyado.com/heathkit/New-H8-Website/h8-h17-vdip1-fsb.html

 

Board Side 1 view: http://koyado.com/heathkit/New-H8-Website/download/h8_h17_vdip1_full_board_side1_view.png

 

I just noticed that I need to do some clean up on the schematics.

 

Thanks,

Norberto

 

 

Glenn Roberts

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Nov 14, 2022, 5:03:17 AM11/14/22
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So, functionally the same as the “piggyback” version you made for the H37/67 board, just stand alone now?

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On Nov 14, 2022, at 2:43 AM, norberto.collado koyado.com <norberto...@koyado.com> wrote:


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norberto.collado koyado.com

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Nov 14, 2022, 5:06:41 AM11/14/22
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Correct! Do you need anything else added?

Glenn Roberts

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Nov 14, 2022, 5:31:11 AM11/14/22
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Just a thought: Les’ original version had a number of LEDs to monitor the board including the select lines:


Can’t recall if there was a specific reason for removing those from the current design? Worth putting any of those back in? At least side select? Was there a 40/80 track indicator?

You know me and “blinkenlights” :-)



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On Nov 14, 2022, at 5:06 AM, norberto.collado koyado.com <norberto...@koyado.com> wrote:



Joseph Travis

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Nov 14, 2022, 8:32:47 AM11/14/22
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Supports 3.4" drives?!

Les Bird

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Nov 14, 2022, 9:49:13 AM11/14/22
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What a clean design. So much empty space on that card. I agree with Glenn, add some more monitoring LEDs.

Les


norberto.collado koyado.com

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Nov 14, 2022, 2:09:56 PM11/14/22
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OK, I will add the LED’s as I did not see that much value when compare with the H17  I/O LED. Also, I will add the VDIP1 LED1 header as well for front panel monitoring.

 

Yes it supports 3.5” floppy drives.

 

Norberto

Joseph Travis

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Nov 14, 2022, 3:03:33 PM11/14/22
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On your website it shows 3.4"...

norberto.collado koyado.com

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Nov 14, 2022, 3:40:47 PM11/14/22
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My bad and fixed!  😊

norberto.collado koyado.com

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Nov 14, 2022, 6:09:31 PM11/14/22
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Added a buffer for the LED’s.

 

 

Attached is final board.

 

Norberto

H17_LAYOUT.JPG
H17.pdf
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