comp.sys.arm - join
The ARM processor architecture and support chips.
Low activity, 987 subscribers, Usenet

comp.arch.fpga - join
Field Programmable Gate Array based computing systems.
Medium activity, 4030 subscribers, Usenet

comp.lang.vhdl - join
VHSIC Hardware Description Language, IEEE 1076/87.
Medium activity, 2240 subscribers, Usenet