Douglas Quebbeman <dhquebbeman(a)theestopinalgroup.com> wrote:
The CPU card in the Prime 2455 uses 17 pin-grid-array
packages
with what I think is the Fairchild hallmark (an 'F' with a bar
above and a bar below), and the part number is MB15604.
Fujitsu.
Is this an FPGA?
More likely a gate array (non-field-programmable).