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[/] [xulalx25soc/] - Rev 53

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53 Added a touch of error checking. dgisselq 3117d 11h /xulalx25soc/
52 This brings the XuLA2-LX25 SoC up to speed with the rest of the ZipCPU, and
prepares it for the 32x32 bit multiply instruction set change.
dgisselq 3117d 11h /xulalx25soc/
51 Lots of bug fixes. The ugliest were in the prefetch cache, where instructions
from one cache line were being issued as valid in another. Other fixes include
pipeline fixes so that LOD (Rx),Rx; LOD(Rx),Rx works, and more. Finally, the
decode was adjusted so that brev no longer affects the flags.
dgisselq 3127d 09h /xulalx25soc/
50 Updates to fix some broken early branching code, both in idecode and pfcache. dgisselq 3136d 12h /xulalx25soc/
49 Added some documentation to make the read and write calls easier to understand. dgisselq 3145d 12h /xulalx25soc/
48 Cleaned up the documentation a touch. It no longer reads like the bugs I used
to debug are still being debugged ...
dgisselq 3147d 13h /xulalx25soc/
47 Fixes the "NAN" clocks/second output, as well as making input timing come closer
to a realistic timing. (I actually don't know what timing the JTAG port is
providing, but ... the new timer is closer.)
dgisselq 3147d 13h /xulalx25soc/
46 This is a bug fix release--fixing the bug that kept dumpsdram.cpp/wbsdram.v
from working when long pipelined reads were interrupted by the necessity of
a pair of refresh cycles.
dgisselq 3147d 13h /xulalx25soc/
45 Minor cosmetic change, eliminates a warning in Xilinx's XISE but offers no
functional difference.
dgisselq 3151d 09h /xulalx25soc/
44 NELM parameter adjusted to reflect the maximum number of lines the compressed
scope can handle: 31, not 32.
dgisselq 3151d 09h /xulalx25soc/
43 Commentary changes only, no substance. dgisselq 3151d 09h /xulalx25soc/
42 Minor changes. dgisselq 3151d 09h /xulalx25soc/
41 Bug fix. This was preventing dumpsdram from accurately reading back what
had been written to the RAM earlier.
dgisselq 3151d 09h /xulalx25soc/
40 This adds to dumpsdram the capability to run over a port, such as with
busmaster_tb.
dgisselq 3152d 20h /xulalx25soc/
39 An attempt at a bugfix. We'll see if this works any better downstream. dgisselq 3154d 16h /xulalx25soc/
38 Updated to remove the build dependence upon ZipCPU. dgisselq 3154d 19h /xulalx25soc/
37 These fixes were necessary to get the SDRAM into a working simulation
capability. It is finally what it was supposed to be: cycle accurate. Sadly,
to do this, I did need to make a subtle change to rtl/wbsdram.v. (I was having
a problem with external input clocking in Verilator. This fixes it--but its
a Verilator only change--to rtl/wbsdram.v that is.)
dgisselq 3155d 13h /xulalx25soc/
36 A linker script, appropriate to the XuLA25-LX25 SoC. dgisselq 3155d 15h /xulalx25soc/
35 Updates the memory testing program to work successfully with the Gnu build
tools--particularly the GNU C-preprocessor from GCC and the GNU assembler from
Binutils.
dgisselq 3155d 15h /xulalx25soc/
34 Bug fix: This sets as a positive voltage bias (not negative) the maximum
value of 0x07fff, where as the negative maximum value of 0x08000 properly
(now) reflects nearly ground--as one would desire. (Last time around I had
these backwards.)
dgisselq 3159d 10h /xulalx25soc/

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