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[/] [zipcpu/] [trunk/] [sw/] [zasm/] - Rev 182

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Rev	Log message	Author	Age	Path
60	Fixed assembler processing of jump instructions, so that the new fast return instruction can be used. The test file was modified to test pipelined value passing within the CPU. That's where the value gets (re)used before being stored back in the register file. As of this release, all tests work.	dgisselq	3110d 17h	/zipcpu/trunk/sw/zasm/
55	A test was added to double check whether carry following right shifts worked. This was a necessary part of getting two cycle linear feedback shift register operations working for a memory test on a XuLA2 board. With this, I can now verify that such feedback registers work for pseudorandom number purposes.	dgisselq	3120d 19h	/zipcpu/trunk/sw/zasm/
54	This builds on the support for backslash character escapes in both single and multicharacter expressions. Backslash character escapes are now possible with quotations and backslashes, and the same code to interpret the escapes is applied to both single and multicharacter sequences.	dgisselq	3120d 19h	/zipcpu/trunk/sw/zasm/
53	Updated the #include/#define directives to work properly for nested includes. (They were supposed to work properly for nested includes before ... and didn't) This fixes those bugs.	dgisselq	3120d 19h	/zipcpu/trunk/sw/zasm/
52	Added the capability to "see" character's encoded within a binary file, by printing the character value(s) of each opcode (if they are printable) on each line.	dgisselq	3120d 19h	/zipcpu/trunk/sw/zasm/
51	Added the capability to look at binary files and 'see' characters as they are encoded in memory.	dgisselq	3120d 19h	/zipcpu/trunk/sw/zasm/
46	A series of updates associated with getting Dhrystone to work. Includes updates to getting multiple files to link/work together within the assembler, as well as getting quoted quotations to work in the lexer, and better include file support in the preprocessor.	dgisselq	3130d 10h	/zipcpu/trunk/sw/zasm/
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	3133d 13h	/zipcpu/trunk/sw/zasm/
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	3142d 19h	/zipcpu/trunk/sw/zasm/
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	3168d 14h	/zipcpu/trunk/sw/zasm/

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