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[/] [amber/] [trunk/] - Rev 36

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36 Changed boot_mem for the a25 system to be 128 bits wide to match the 128-bit wide wishbone bus csantifort 4758d 19h /amber/trunk/
35 Amber25 improvements:
Use 128-bit wishbone bus, instead of 32-bit to reduce cache miss fetch times
Use a fast barrel shifter for shifts between 0 and 4 to improve timing
Use a 2 cycle full barrel shifter for complex shifts
csantifort 4760d 02h /amber/trunk/
34 Tweaked strcpy function to speed it up slightly csantifort 4760d 23h /amber/trunk/
33 Fixed bug in div assembly function. Handles negative numbers correctly.
Fixed bug in printf function, negative numbers now print correctly.
csantifort 4761d 19h /amber/trunk/
32 Added clock cycle counting register to test_module to support dhrystone performance measurement csantifort 4762d 19h /amber/trunk/
31 Added dhrystone benchmark test csantifort 4762d 20h /amber/trunk/
30 Bug fix - a write access was sometimes dropped when it was in a sequence of writes with variable wb_ack delays csantifort 4776d 02h /amber/trunk/
29 Use lgo command for saving waveforms in modelsim csantifort 4777d 20h /amber/trunk/
28 Moved function prototypes to .h file csantifort 4777d 20h /amber/trunk/
27 Got working with cadence nc simulator csantifort 4811d 03h /amber/trunk/
26 Added wish list csantifort 4816d 03h /amber/trunk/
25 Bug fix: boot-loader.mem became larger that the allowed 8k byte boot mem size.
Removed a struct in elfsplitter.c thats only used for debug - this reduced boot-loader.mem enough so that it fits again.
Tidy up: Removed a debug message from hw/tools/run.sh
csantifort 4818d 00h /amber/trunk/
24 Added instructions how to build Linux kernel from source files csantifort 4820d 01h /amber/trunk/
23 Split the source files list into a Vertex-6 only list and a Spartan-6 only list.
That way users don;t need to delete files from the list manually if they only have
a setup for one of the FPGA types.
csantifort 4820d 02h /amber/trunk/
22 Added files and instructions to enable the building of the vmlinux image from the kernel source files. csantifort 4824d 01h /amber/trunk/
21 Fixed bug in the conditions to create the FPGA configuration log file. I added the creation of the log file in the last release, but the way it was implemented was causing the Makefile to always rebuild from the start. csantifort 4824d 01h /amber/trunk/
20 Added feature to A25 core to directly use a read value from the write back stage
to reduce the stall to 1 cycle when there is a register conflict with the
following instruction. This increases performance by about 3%.
csantifort 4845d 02h /amber/trunk/
19 Create a configuration log file as part of the synthesis flow. This file is a useful reference to
tell the different bitfiles apart.
csantifort 4845d 02h /amber/trunk/
18 Added list of source files and diagram for Amber25 core. csantifort 4848d 01h /amber/trunk/
17 amber25 core bug fix. The return address for irq interrupts was off by 4 bytes
when the interrupt occurred during a stm instruction with the following instruction
having some register conflicts. Added test irq_stm to catch the bug.
Cleaned up some header descriptions
csantifort 4849d 00h /amber/trunk/

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