Dec RQDX: What kind of chips on it?

It makes sense: The 1/2 used interleaving, which would have required extra code in the 3 to support. The 1/2 figured out the disk geometry based on ROM lookups, the 3 stored the disk geometry on the disk. That meant you didn't have to worry about ROMs and technically you could use pretty much any MFM disk with less than a certain number of heads and cylinders. What I realized mentally is that from the OS/driver/register level they are identical. So while the physical disk format is different, there should be no reason I can't hook up an RQDX2 to the DSM disk, fire up PDPGUI, select the drive as a DU: type, suck the data into a file over a serial connection, and boot it on SIMH without any issues. True, and I can download P/OS, dig out the PC with a 1.2mb floppy, and make the floppies on these Micro-RSX11M floppies I have in a box but man it's 30 floppies of *stuff*. Technically I see there is a disk writer utility for the Pro/POS somewhere so I *could* download that to the Pro, download the disk images, and copy them one at a time. Or maybe I could use this Dave G MFM emulator to emulate an RX50, then just present the disks over and over till install is done. Hm.... C