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[/] [amber/] [trunk/] [hw/] - Rev 53

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Rev Log message Author Age Path
53 Cleaned up Amber Verilog, removing unused signals. csantifort 4716d 00h /amber/trunk/hw/
52 Fixed typo in notes on creating DDR memory interfaces using coregen csantifort 4716d 00h /amber/trunk/hw/
50 Revert to previous version csantifort 4757d 00h /amber/trunk/hw/
49 Added a note n how to change timeouts csantifort 4757d 00h /amber/trunk/hw/
48 Fixed a bug in linux that caused the os to not return to the running application after an interrupt.
Hello-world now runs stand-alone again.
Added initrd-200k-dhry, a disk image that uses the dhry program for init.		 csantifort 4761d 07h /amber/trunk/hw/
47 Changed V6 VCo from 1000Mhz to 1200 MHz csantifort 4781d 04h /amber/trunk/hw/
45 Store vmlinux.mem and vmlinux.dis in compressed form csantifort 4789d 02h /amber/trunk/hw/
43 Added support for the flat executable file format to vmlinux, so that the hello-world program is correctly relocated when it is loaded at the end of the vmlinux test.
Changed the Virtex-5 clock configuration to use a 1200MHz VCO frequency and 80MHz system clock frequency.		 csantifort 4789d 03h /amber/trunk/hw/
42 Added write buffer - fixes bug if wishbone writes takes multiple cycles to complete csantifort 4806d 23h /amber/trunk/hw/
41 Added instructions on how to use Coregen to create the Spartan-6 DDR3 memory interface. csantifort 4808d 08h /amber/trunk/hw/
40 Added wishbone bus jitter testing option.
Cleaned up waveform log .do files, now seperate files for a23 and a25 cores.
Added vmlinux executable elf file for running on hardware.		 csantifort 4813d 00h /amber/trunk/hw/
39 Added a second level of buffering to a25_wishbone_buf to fix a lockup
bug when write acks to not return immediately, and also to improve performance slightly		 csantifort 4814d 01h /amber/trunk/hw/
38 support 128-bit wishbone now used for a25 core csantifort 4815d 01h /amber/trunk/hw/
37 128-bit wide boot memory module csantifort 4815d 23h /amber/trunk/hw/
36 Changed boot_mem for the a25 system to be 128 bits wide to match the 128-bit wide wishbone bus csantifort 4816d 00h /amber/trunk/hw/
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 4817d 07h /amber/trunk/hw/
32 Added clock cycle counting register to test_module to support dhrystone performance measurement csantifort 4820d 00h /amber/trunk/hw/
30 Bug fix - a write access was sometimes dropped when it was in a sequence of writes with variable wb_ack delays csantifort 4833d 07h /amber/trunk/hw/
29 Use lgo command for saving waveforms in modelsim csantifort 4835d 01h /amber/trunk/hw/
27 Got working with cadence nc simulator csantifort 4868d 08h /amber/trunk/hw/
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 4875d 05h /amber/trunk/hw/
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 4877d 07h /amber/trunk/hw/
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 4881d 06h /amber/trunk/hw/
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 4902d 07h /amber/trunk/hw/
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 4902d 07h /amber/trunk/hw/
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 4906d 05h /amber/trunk/hw/
16 Deleted the old version of the 3-state amber core. Its replaced with amber23.
Added the 5-state Amber core.		 csantifort 4908d 19h /amber/trunk/hw/
15 Copied amber to amber23, Many system changes to support new amber25 core. csantifort 4908d 19h /amber/trunk/hw/
14 Re-wrote the behavioral clock generation code to more accurately
calculate the sys_clk frequency. The previous version was not
producing the correct frequency at higher frequenies due to
rounding errors.		 csantifort 4910d 07h /amber/trunk/hw/
13 Bug fix - added an extra state to the rx state machine to properly align
reading the uart input to the middle of each bit.		 csantifort 4910d 07h /amber/trunk/hw/

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