Anyone knows what this is?

[MrZammler]

Just got an A2088XT from a friend, and noticed a small pcb with what appears to be crystals, glued on top.

http://www.amigahellas.gr/modules/myalbum/photo.php?lid=381&cid=4

(click on the pic for a larger version)

Anyone might know what this is for? A bench I tried still mentions the 8088 running at stock 4.77Mhz

Thanks!

[da9000]

Haven't seen it before. Mine doesn't have it, but your guess about overclocking is what my guess would be as well!

Question is: what do the crystals say?

[MrZammler]

Hard to tell. They are covered in black paint! Tried scratching a bit, but couldnt make out.

[da9000]

Oh crap, I thought it was the angle of the photo showing a highly reflective surface (like a mirror).

X-ray glasses? :-)

[Argus]

It's probably a turbo switch or something similar.  I believe the 2088 is overclockable so that's probably a software switchable board to kick in a turbo mode (not that'd make a huge difference nowadays).

[Nlandas]

They look like clock chips to me for over-clocking as stated.  Can you run the BB and see what clock it's running at?

[mike-]

Overclocked bridgeboard?
Maybe i really should try reading the whole post before squirting out an answer ^^