3 Commits

Author	SHA1	Message	Date
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
Josh Dersch	2189e264c3	Initial stab at MSCP implementation. Strives to be MSCP compliant but is not an emulation ... of the UDA50 controller. Currently works acceptably with RT-11, does not currently boot. Many holes in implementation.	2019-04-16 02:30:40 +02:00