You're right though - you couldn't do anything
without some
sort of hack, to include the power supply not being triggered for more
than just 2 floppies and 640k memory. Put anything more in it like a video
board with memory and it would go into eternal reset/restart until you
pulled the board.
Hmmm... mine has V20 at 7MHz, 768K, CGA and serial boards and a 10 Meg
hard disk. The only part I don't think I ever hacked was the power
supply and the last time I powered it up it worked fine.
Bill Sudbrink