Martin_H wrote:
R301 is listed as a nine pin resistor array in the parts list, but there's only eight holes in the board. Do I clip the last lead to mount it?
This should be a 3.3k 8-pin array. I bought 8-pin ones on eBay but if you bought 9-pin ones you can cut off the last pin. Or, you can make an array with discrete resistors. I corrected the parts list and changed the Digikey part number. I think at some point I had intended on using a 9-pin array but wound up needing too many resistors so I used two 8-pin ones.
Martin_H wrote:
R101 is not in the parts list. Is this array the same as R301? Note that there are only eight holes in the board here as well.
Same as above. 3.3k RPACK.
Martin_H wrote:
74hc21 does not have the dip-14 in the footprint column, so I didn't order a socket for it. Adding that I would help the ordering process.
Done.
Martin_H wrote:
D201, D401, and D501 look like they mount vertically. The silkscreen doesn't show the polarity, but the right square solder pad indicates to me that the black band should be soldered to the right side and the other lead to the left.?
The reason for this is that if you use the old Rockwell or MOS 6522's, you don't need the diode (although there's no real reason to use the old MOS ones unless you have boxes of them). The square hole is to signify the band on the diode.
Thanks for picking up these inconsistencies in the parts list.
_________________
Rich Cini
Build Master and maintainer of the Altair32 Emulation project
http://cini.classiccmp.orghttp://altair32.classiccmp.org