On 9/7/06, Jay West <jwest at classiccmp.org> wrote: Dunno about the H8. My recollection of debugging some H27 issues a couple of years back is that there's a boot prom on the Qbus card for the H27. If that's the case, then as long as it isn't stomping on a bootstrap ROM somewhere else on the bus, then you should have no problems. Heath's card should be register-level compatible with either the RXV11 or the RXV21 (can't remember which one right now). My H-11 came with a KDF-11, DEC memory, pretty much DEC everything; just the Heath backplane and PSU and floppy controller. The previous owner never booted from floppy, though; he hacked the case and added an off-to-the-side CD-interconnect and used an RLV11. It took a bit of work to get it all back together. -ethan