Changes
Albireo
,/* Version 2.0 */
All interrupts on the board were handled by the SC16C650B chip. It is unclear how they are treated in version 2.0.
This Albireo version has solder jumpers on bottom side (JP2 & JP3) to change the I/O address from the default &FE80/81 to &FE40/41. You need a cutter and a bit soldering to do this change, though. This allows to plug two Albireo cards simultaneously. The latest Albireo and Unidos ROMs together can already handle this (yay!). This will allow to, for example, use one board for mass storage, and the other to connect various USB devices: mouse, MIDI controller, printer, whatever you need (as long as you find someone to write a driver).
[[File:Albireo 2.0 top.jpg|500px]] [[File:Albireo 2.0 bottom.jpg|500px]]