Hard Drive Identification

Killer Instinct: Seagate ST9150AG
Killer Instinct 2: Seagate Marathon ST9420AG

Boot ROM (U98), Sound ROMs (U10-13, U33-36)

STMicroelectronics M27C4001: Datasheet

CPU

4600 MIPS - Will add more info on make/model when find PCB w/o heatsink attached. QFP208 package.

Programmable Logic Devices

Altera MAX7000 Series PLD (EPM7096LC68-10, KI-U92 A-19488 (C)1994 NINTENDO/RARE): Datasheet / Pinout
Altera MAX7000 Series PLD (EPM7032LC44-15T, K12-U96 A-20351 (C)1996 NINTENDO/RARE): Datasheet / Pinout
(2x) Altera MAX7000 Series PLD (EPM7128ELC84-10, KI-U103 A-19486 (C)1994 NINTENDO/RARE): Datasheet / Pinout