Old PC hardware

Some PC hardware from late 80' and early 90'.

 Motherboard with soldered UMC 486SX 33MHz processor and socket for 487 coprocessor.

Multi I/O ISA card CT-6250.
NS8250 = "original" 8250 UART
MM58176 = real time clock
UCY7406 - Polish TTL - what is doing here?

FDC37C65 Super I/O chip

PAL16L8

HM6666 - based card, http://www.mks.purespace.de/technical/hm6666.htm

HM83450 + W86C451

Other variant of same card

W83757F + W83758P