Brian, you should be aware - the hardware has a flaw. the flops don't always power up in bank 0. - REX software does not work reliably with Quad - the quad utilities work ok though.
yes 2 BAV70s as far as the ram goes, I would just check it to make sure it is the same as TC551001. you might find that ram for cheap on ebay. OR - redo the design to address the flop issue and with a more available ram chip / smaller footprint. I do my designs for parts I have... steve On Mon, Sep 11, 2017 at 12:27 AM, Brian White <[email protected]> wrote: > Hey Steven, I think I worked up a DigiKey cart to build 3 QUADs, the version > on osh park now. > > 2 things I'm not sure about: > > The text on oshpark says it needs a BAV70, but it looks like there are > footprints for 2 BAV70's on that version of the board. I assume I should I > install 2? > > The exact referenced memory chip is not available, but I think I narrowed it > down to about 20 possibles, and picked one for the cart based on > availability as much as anything else. Does this part look right? I tried to > match, parallel, 18.4mm, 5v, forward pinout, > > The cart with the questionable memory chip is here: > http://www.digikey.com/short/qcm427 > > Ignore the pins. The price is ridiculous, but I just wanted to make a cart > that had everything for reference and completeness, and I can't find any > pins on DigiKey that aren't stupid like that. > > -- > bkw
