Joe That BOM was not thoroughly checked. I have an updated one that I used to build my Board
I uploaded that one for someone and cautioned it is not complete.
Attached is the latest Bom I used for my board. C3 is a 47uF Capacitor
Take a few minutes to check it against the schematic.
Double check the Bussed resistor arrays for type and resistance. they are
hard to remove
.
Make a print of the board as the component values and #'s are covered once
the part is installed. It's easy to get lost
.
The 220 #'s ( Both ) should be resistors. Again check the schematic to see
where its connected to confirm.
The 74F series are necessary for the board to run at a faster speed. They
are referenced in the text for the Z80 V2 board
on the s100computers.com
Sorry about the confusion.
Thanks
Doug Wood
On Monday, 10 February 2014 00:28:17 UTC-5, Joe Herdler wrote:
>
> Hi All,
>
> I have been slowly working on my Z-80 V2 board. I am taking my time, as
> the end is not the goal, rather the journey is the fun part. I solder each
> part in place after checking three times to make sure it is the right one,
> then I inspect the solder joint with a high power magnifying loupe to make
> sure it is up to standard. If not, it is fixed. As I assemble each
> component to the board, I check it off on the bill of materials list that I
> printed off. This way, I hope to minimize mistakes.
>
> Thus, here is my questions...
>
> First, is C-3 really a 0.1 uf ceramic cap? It is next to three (the only
> three) electrolytic caps, and the mounting area for it is a circle with a
> polarization indicator.
>
> The second question is about the LEDs... D 1,3,4 and 5 are listed but not
> D 2,7 and 8. I just want to be sure that those are LEDs as well. (no
> assumptions here :-) Also, on the subject of LEDs, am I correct in that the
> flat side of the LED goes toward the little notch in the circles?
>
> The third and last question that I have concerns two rectangular boxes
> near U 9 and U 29 that have the number 220 inside of it. Is this a 220 Ohm
> resistor? There is no "R" number in the boxes.
>
> Thank you very much! This is really a neat project. When I was a kid, and
> the IMSAI machine came out, I did not have the means to get one. So I am
> now building one 40 years later as I type this on my Dell notebook right
> next to my work area where I am building this board. Couldn't ask for any
> more! :-)
>
> Best,
>
> Joe
>
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S100-Z80.ods
Description: application/vnd.oasis.opendocument.spreadsheet
