viewtopic.php?f=29&t=17418

you should be fine, even your 800k drive should be able to read/boot 400k disks.

the 128k / 512k / 512ke board is pretty much all the same...

512k just has a mux and some larger capacity ram chips

512ke has all that + Plus Rom's and 800k floppy drive + (800k WIM Chip)? . might need verification with that, i'm a little not sure on that last one.