4 Commits

Author	SHA1	Message	Date
Josh Dersch	be3b6d57ed	Implemented AVAILABLE, ERASE, DETERMINE ACCESS PATHS commands. Tweaks to interrupt queueing (request_INTR now blocks until ... the interrupt actually gets signaled on the unibus). OpenVMS 7.3 now boots on the VAX.	2019-05-06 19:28:20 +02:00
Josh Dersch	8eff2a4e10	Rewrote lower-level DMA and IRQ handling: DMA and IRQ requests are now queued and will run to completion on their own ... without help from the device code (just call request_DMA and when it returns the DMA transfer is complete.) Fixed request_DMA to chunk DMA transfers larger than 1024 bytes to avoid overrunning the mailbox's shared memory. Fixed concurrency issues with DMA requests -- a race condition could cause DMA request data to get clobbered. RT-11 now boots, MSCP behavior is now very reliable.	2019-05-04 03:30:26 +02:00
Josh Dersch	e0aabf2197	Changes to MSCP implementation with tweaks to PRU1 code to allow operation on 11/84 under 2.11BSD. ... 2.11BSD boots and works well enough to recompile itself.	2019-04-24 20:29:33 +02:00
Joerg Hoppe	2530d9cbb5	Initial	2019-04-05 11:30:26 +02:00