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Altera EP1810 UV-erasable CPLD: 48 macrocells
Reverse-engineering: www.eevblog.com/forum/projects/reverse-engineering-some-l...
Eastern National 3000 CPU 979G, in Point Roads, Canvey Island. Castle Point Transport Museum open day on Sunday 14th October 2012. DSCN21212.
Bristol VRT-ECW.
Small arrows embossed on the side of the CPU fan (1) indicate the direction the blades will turn and the direction air will flow. (They are on the side of the fan and are hence not visible here.) For proper cooling, air should be pushed over the fins of the CPU cooler. Since beyond that is a system fan pulling air, this makes for the perfect airflow, straight through from the front to the back of the case.
The fan is held in place with two metal attachment frames(3, 4), which seem flimsy but do the job. I will say I found them very fiddly to get into place.
Note that there is barely any clearance over the first RAM slot (2). The frames do allow one to budge up the fan slightly so it is not literally touching the RAM, as I judged this a bad idea.