NS PC8394T

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NS PC8394T / Winbond 8394TD2/G1

This is a National Semiconductor SuperIO chip with Trusted Platform functions.

Note: National Semiconductor sold the SuperIO product line to Winbond Electronics, which changed its part number.


  • Serial (16550A compatible)
  • Parallel
  • Floppy
  • IrDA 1.1
  • PS/2 keyboard/mouse
  • TPM 1.1b
  • Asset ID
  • Hardware event log

Linux support

This chipset is patially supported by recent 2.4 and 2.6 kernels, IrDA support is still not working without patches.

ThinkPads this chip may be found in