Hi, ... I wrote a SRAM-Controller to access the local bus of the board and generate the special signals for the SRAM. The data can be written to the SRAM from...
can anyone kindly explain to me how does the integer unit work and what are the related signals that control each step? (or just give me a brief concept of the...
Hi Jiri, We have tried to generate the image for leon3 uClinux of snapgear- p12, that's ok. But download and run it on tsim-leon3, it seems to block between...
Hi, I'm also facing a similar problem with Snapgear. But i'm using leon2. The output halts at the same point. Here is the output. <some messages> VFS: Mounted...
Hi Jiri! I've got a prom image of a basic eCos application which looks like it should mostly work. One minor problem is that I don't have a ram_vectors...
The eCos leon port does not support booting from prom. To boot an application, make a prom image using the sparc-elf-mkprom utility in BCC. The mkprom loader ...
Hi Jiri! ... Yoiks! We can't afford to run from RAM - not enough of it - but we have plenty of ROM space. I've been using sparc-elf-mkprom and seem to be...
Hello Jiri, Unfortunately, it acts the same after some changes: I have now pio_signal(1 downto 0) <= "00" when resetn='0' else "ZZ"; (instead of rom_cs(0)='0'...
Stephane Davy
stephane.davy@...
May 2, 2005 12:53 pm
6628
... This will not work since the pio[1:0] must be stable at least 8 clock after the release of reset (due the the internal reset stretching). Why don't you not...
... Thanks for this quick answer, I will try this. 8-bit bus is enabled. I wanted to keep the possibility to use the interrupts of the main controler. But I...
Stephane Davy
stephane.davy@...
May 2, 2005 1:08 pm
6630
... Are you sure about the number 8 ? Actually, I couldn't force pio(1..0) to "00" because XST throws an error because of multi-sources on pio(1) and pio(0)...
Stephane Davy
stephane.davy@...
May 2, 2005 3:24 pm
6631
I think you miss-understood what I ment. The pull-downs should be placed on the outside PIO pads, not inside. Your work-around with the counter solved the...
I think I had correctly understood: I mean I placed the pull-downs at my top-level (outside of your processor) and XST refused to connect GNDs to these pios...
Stephane Davy
stephane.davy@...
May 2, 2005 4:18 pm
6633
You cannot have on-chip pull-downs, they must be outside the device, i.e. on the PCB. You can also assign pull-ups to the pads through the .ucf file, but never...
Running from prom is tricky, and involves changing logical address in data segments etc. You can get the basic idea from how it is done for the bare-C runtime...
Hi JiJiri ... I seem to have this running okay now after a little bit of fiddling. Under simulation at least, we boot, go to the eCeCostart and it appears to...
That's the last time I'll use the Yahoo spell checker! IT gave me a ststutter!! Here's what I really wrote: Hi Jiri! ... I seem to have this running okay now...
Hello, I am using the stanford benchmark and I would like to confirm my results. I have found the following messages about the stanford benchmark: 1 - Re:...
Hi Jiri, Is it possible to use grmon-eval to connect a SoC based on AMBA bus whit an ahbuart (Serial debug interface for AHB) but without LEON3 processor and...
Sure. grmon scans the bus and reports the attached units. The basic commands (mem/wmem etc.) are always available even if no leon3/dsu is in the system. There...
Dear all: I am trying to build ecos on my box. I am wondering if there is a ecosconfig for Debian Linux ? If not , Can I or what should I do to build ecos on...
... Why? It is enough to have the gcc manual, so you understand what the options does. ... I think that this is the key to get it to work. Your applications...
OK now I've fixed my pull-down problem. I'm a bit confused where objcopy steps in. So what I've done first is: sparc-elf-objcopy -O binary test.exe prom8.bin ...
Stephane Davy
stephane.davy@...
May 3, 2005 12:51 pm
6644
The steps to get a prom image are explained in the BCC manual, please have a look at it. There are three basic steps: compilation, prom creation, image file...
Hi Jiri! ... I want to see how it interprets the elf file. By the way, what does the -rmw parameter do. Does it mean "read, modify, write"? If so, I still...
Hi, My program is used to be compiled with leccs-cygwin-1.1.5.3.tar and works fine. Becuase it pure C sequential C files wiuth some interrupt handling, I tried...
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