This seems like a neat card with zero information about it, let’s investigate what it is.

– Info

Destek 1982 ISA Network Card:

S/N 10058301 00750003-001D

  • Z80A CPU
  • U37 - Intel 8237A-4 HIGH PERFORMANCE >PROGRAMMABLE DMA CONTROLLER
  • SRAM: 2016/6116/9128 - 2048x8 bit Static RAM >(two total, 4K) Mapped into $0000
  • 2732 EPROM for Z80 4K
  • Z80 CTC (Clock / Timer)
  • WD1933B-03 Synchronous Data Link Controller
  • DB15 for network connection

DIP Switches: 9 switch block: 1-9 ON except 5 and 9 (Off) 2 switch block SW2: 1 Off 2 On

Jumper block P2: Pin 1 to 8, Pin 2 - 7 connected

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