1 Megabit magnetic bubble memory board addition to the SBC-85 Family

NOTE: This board is for the 20-pin 7110A and not the leadless 7110-1 bubble device.

This is a 125mm x 100mm 2-layer bare board. This is the first version of this board so there may be some undiscovered issues and therefore the board is considered a late prototype. Software and additional information on the board is available on the SBC-85.COM project website but the documentation is still coming together.

I also have some BPK70A bubble kits listed on tindie.

You will need to source an Intel 7110A or 7110AZ bubble chip as well as its five support components, the 7220 bubble controller, and additional (but readily available) components. See the BOM on the project website. Note that on the off-chance that the seed bubble is bad in your 7110A you will need to set up a reseeding circuit.