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[/] [zipcpu/] [trunk/] [rtl/] [Makefile] - Rev 109

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Rev	Log message	Author	Age	Path
105	Fixed some nasty early branching bugs. Adjusted the Makefile to declare that cpudefs.h was automatically generated from cpudefs.v, and made sure that zipbones included the cpudefs.v so it could get the DEBUG_SCOPE define. In addition, the test.S was updated to test long jumps, the early branching bug we found, and all three early branching instructions: ADD #x,PC, LOC(PC),PC, and LDI #x,PC.	dgisselq	3188d 18h	/zipcpu/trunk/rtl/Makefile
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	3266d 17h	/zipcpu/trunk/rtl/Makefile
56	Here's a bit of work in progress for getting the Zip CPU working on a XuLA2 board. Many changes include: the existence of a cpudefs.v file to control what "options" are included in the ZipCPU build. This allows build control to be separated from the project directory (one build for a XuLA2 board, another for a Basys-3 development board). Other changes have made things perhaps harder to read, but they get rid of warnings from XST. A big change was the addition of the (* ram_style="distributed" *) comment for the register set. This was necessary to keep XST from inferring a block RAM and breaking the logic that was supposed to take place between a register read and when it was used.	dgisselq	3337d 20h	/zipcpu/trunk/rtl/Makefile
38	A couple of quick updates: - The Zip CPU now supports pipelined memory access at one clock per instruction (assuming all the instructions are in the cache) - There is now a 'zipbones' module to build a Zip System without peripherals. Any peripherals would then need to be external to the CPU. - Some bug fixes. Documentation changes coming shortly.	dgisselq	3350d 16h	/zipcpu/trunk/rtl/Makefile
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	3359d 20h	/zipcpu/trunk/rtl/Makefile
18	A couple of changes: Registers can now be changed via the debug interface. Also, in anticipation of being able to interrupt the break the processor, the CPU now exports an interrupt line to the external environment to tell when it has been halted. Thus, if it gets halted by a break instruction, the ZipSystem will interrupt whatever's in its environment so that the debugger can come and examine its state. Oh, and one other: because you can't examine the state of the CPU without halting it, I modified the debug control register to export the four useful flags: break-enable, interrupts enabled, and sleep (step comes for free in this implementation).	dgisselq	3395d 08h	/zipcpu/trunk/rtl/Makefile
2	An initial load. No promises of what works or not, but this is where the project is at.	dgisselq	3415d 11h	/zipcpu/trunk/rtl/Makefile

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