URL https://opencores.org/ocsvn/zipcpu/zipcpu/trunk

Subversion Repositories zipcpu

[/] [zipcpu/] [trunk/] [rtl/] [core/] [memops.v] - Rev 187

Rev	Log message	Author	Age	Path
69	This implements the "new Instruction Set" architecture for the Zip CPU. It's a massive change set, that touches just about everything but probably not enough of everything. Please see the spec.pdf for a description of this new architecture.	dgisselq	3254d 07h	/zipcpu/trunk/rtl/core/memops.v
48	Files added/updated to get Dhrystone benchmark to work. Several fixes to the CPU in the process, 'cause it wasn't working. Stall-less ALU ops now work better, to include grabbing the memory result as it comes out of the memory unit and placing it straight into either ALU or memory unit for the next instruction.	dgisselq	3335d 01h	/zipcpu/trunk/rtl/core/memops.v
36	Lots of changes to increase processing speed and remove pipeline stalls. Removed the useless flash cache, replacing it with a proper DMA controller. "make test" in the main directory now runs a test program in Verilator and reports on the results.	dgisselq	3347d 10h	/zipcpu/trunk/rtl/core/memops.v
3	Rebuilt the pipefetch (instruction fetch/cache module) so that it will let go of the bus if the memory unit wants it to execute an instruction. Pipefetch will then grab the bus back whtn the memory unit is done, so things otherwise continue as they were before. Other tweaks were made to try to reduce code complexity.	dgisselq	3402d 08h	/zipcpu/trunk/rtl/core/memops.v
2	An initial load. No promises of what works or not, but this is where the project is at.	dgisselq	3403d 01h	/zipcpu/trunk/rtl/core/memops.v