From: David Bridgham Sent: Monday, November 23, 2015 11:30 AM >> For a classic/straightforward programming interface, the Massbus disks (RP04 >> and successors) are a good choice. That will take you just over 500 MB, if >> you emulate the layout of the RP07.
> Current thinking (at least my current thinking) is RK11 first then probably > RP11, both optionally extended to support Q22 addresses. Why bother with the RP11? The RP03 gives you a maximum of 40MB (20MW) per disk. > Finally, most likely the RH11 for some Massbus disks with 22-bit addressing. Be careful with the RH11 (and other Massbus interfaces): DEC lied in their published descriptions of the signals. In particular, 2 important ones are interchanged in the tables. Rich Rich Alderson Vintage Computing Sr. Systems Engineer Living Computer Museum 2245 1st Avenue S Seattle, WA 98134 mailto:ri...@livingcomputermuseum.org http://www.LivingComputerMuseum.org/