References
ICE Shared Construction Analysis SCA
9608-508 (Chip Express QYH530 Laser Programmable Gate Array):
http://smithsonianchips.si.edu/ice/cd/9608_508.pdf
9611-501 (Philips PZ5032-10A44 32 Macrocell PLD):
http://smithsonianchips.si.edu/ice/cd/9611_501.pdf
9705-538 (Lattice 3256A-90LM PLD):
http://smithsonianchips.si.edu/ice/cd/9705_538.pdf
9712-569 (Altera EPM7128SQC160-15 EPLD):
http://smithsonianchips.si.edu/ice/cd/9712_569.pdf