flash (or ide) storage for unibus 11?
RichA at LivingComputerMuseum.org
Mon Nov 23 18:11:06 CST 2015
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.
Vintage Computing Sr. Systems Engineer
Living Computer Museum
2245 1st Avenue S
Seattle, WA 98134
mailto:RichA at LivingComputerMuseum.org
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