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Rev	Log message	Author	Age	Path
42	Oops -- forgot to add the stack.	dgisselq	3121d 10h	/zipcpu/
41	Assembly file for the Dhrystone benchmark added.	dgisselq	3121d 10h	/zipcpu/
40	Quick update, updates the assembly for the new version of the assembler.	dgisselq	3121d 10h	/zipcpu/
39	Here's the documentation update to support the pipelined read/writes of the bus from the CPU, as well as the test file that proved they worked.	dgisselq	3124d 13h	/zipcpu/
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	3124d 15h	/zipcpu/
37	Fixed some minor spelling errors.	dgisselq	3133d 06h	/zipcpu/
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	3133d 18h	/zipcpu/
35	I updated the system diagram to reflect the new version that has a direct memory access controller, rather than the (useless) manual cache.	dgisselq	3150d 09h	/zipcpu/
34	Bunches of changes, although very little changed with the core itself. Regarding the core, some bugs were fixed within zipcpu.v (the CPU part of the core), so that the debugger can change the program counter. The debugger can now halt the CPU and then view, examine, and modify registers to include the program counter, although live changes to the CC register have not been tested. There was also a bug in the stall handling of the wishbone bus delay line. This has now been fixed. Moving outwards to the system, some parameters have been added to zipsystem to make it more configurable for whatever environment you might wish to place it within. Other minor clean ups have taken place, mostly to the internal documentation. Lots of changes, though, to the assembler. The big one is the implementation of #define macros, C style. Several buggy macros were in sys.i. These have been fixed. The Makefile has been adjusted so that the build of test.S, which depends upon sys.i, is now properly dependent upon sys.i for make purposes. Further, not only will zpp, the assembler preprocessor, handle #define macros, it will also recursive #defines. The assembler expression evaluator has also been updated to properly handle both operator precedence, as well as modulo arithmetic. The master system test file, test.S, found in the sw/zasm directory has been updated to reflect these new capabilities. (I really need to move it to the bench/asm directory, so you may expect that change sometime later.)	dgisselq	3159d 13h	/zipcpu/
33	Finally finished a first draft of the full specification!	dgisselq	3162d 11h	/zipcpu/

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