I have an older version of a MK2 pcb with the 4Mb eproms and expansion board. Problem is the expansion board went missing. The system boots up and complains that it is missing the eproms U6 through U13 (all eproms on the expansion board). My question - is there anyway to replace the 4Mb eproms with the newer 8Mb eproms on the mainboard and have it work? I've tried replacing what I thought were all the required 4mb eproms with the 8mb devices (twelve 27C801 devices in total), but it still complains I'm missing components. Anyone know how to make this work? Is there a dip switch / jumper somewhere?
Thanks!!
Thanks!!
