Questions about sidearm, SPI, DPAs

Objective: Get single-node NMC app running on SA

SPI
- build Brent's SPI driver on sidearm
- modify sidekick code to use SPI driver

NMC
- build NMC app on sidearm
- build sidekick code on sidearm

DPA
- InstrumentDriverBase has a javax.comm.SerialPort object
- get javax.comm for linux (requires rxtx native layer? RXTX need to be ported?)

Questions:
- What linux version?
- What JVM/Java Edition ?

How to:
- Burn new linux image into flash
- configure SA IP address (any caveats for putting on network)
- can I connect using network? stand alone w/ serial terminal?
- put files on SA (cvs available? ppp? ftp?)
- build SPI driver on SA (is build setup like bufflehead/moonjelly)
- power up/down

Steps:
- Find out about RXTX, Linux on Sidearm
- Build NMC app 
- Test (should work via debug port instead of DPA)
- Build SPI driver on Sidearm
- Test SPI - can it wiggle lines on the backplane/DPS
- Roll SPI code into NMC/SK
- Test