OS level caching of disk devices is a gennable option in M+ with split I/D.
It's actually pretty impressive; the system can do read-aheads, and also
writes can be deferred (which makes turning off the system hot very
bad). I think it can also cache the directory entry table and even a
small cache of 256kb or so makes a nice performance difference.
On 10/23/2025 9:22 PM, Cameron Kaiser via cctalk wrote:
Yeah the Pro controller is far more hopeless than
even an RQDX1. The single
biggest reason I want to get POS/M+ running with split I/D is so I can finally
have cache. A Pro with 3mb memory with cache would be pretty impressive.
How might cache be added to the Pro 380? Venix V2.0 is split I/D and cache
should work great with that too.