National WE-F450
This page was last modified 19:12, 13 January 2022 by Mars2000you.


The National WE-F45O is a very rare cartridge interface that was provided with the WE-F451 Speech Trainer Unit.

It can be used with MSX2 and MSX2+ computers, but does not seem to be compatible with MSX Turbo R (probably the R800 speed can't handle correctly the signal processing).

The cable that connects it to the unit is fixed and can't be removed.

The interface contains

  • a 64kB speech RAM
  • two ROMs (128kB and 256kB), what's very unusual


National WE-F450
National WE-F450 underside
National WE-F450