hii. i recently attached a master to the leon , a simple module which reads a word from the memory, adds one to it and writes it back to the memory. Initially...
Hi Dabral, I don't know u'r requirements but U can use APB onchip registers as cue to the master ,u can dedicate one register as ctrl register to u'r master...
Hi, Yes it does. U can implement slower bus for slower devices in addition to AMBA AHB but most of the time AMBA AHB is enough for all sorts of devices. bye...
Hi, the leon core implements the AMBA AHB and APB buses. Regards, Andrew ... From: Deepu C John [mailto:deepu@...] Sent: 05 February 2003 09:47 To:...
Andrew Hall
andrew@...
Feb 5, 2003 9:50 am
3009
hi, I want to make a cyptocore (AES) with AMBA AHB interface. Can anyone tell me is it similar to what is done in leon sparc. And what all things has to be...
Hi, Could u give more details on "cryptocore (aes)". I assume u are talking about a way to encrypt information. bye for now Tikko ... From: Deepu C John To:...
I mean I want to make a Crptographic core which encrpyts and decrypts data according to the AES algorithm.This core inturn goes into a wireless lan mac. The...
Hi, Leon Team: I would like to make a functional test to Leon. So I would like to create my own test programs. I would like to know: How could I make it? Which...
... How I should load it? For VHDL simulation you should replace the ram.dat file as discussed in the list: to compile your program: sparc-rtems-gcc...
HI Deepu, Yes, Leon Sparc uses AMBA AHB and I have used it for one of my application. Cheers!! Dinesh ... mean I want to make a Crptographic core which ... ...
Hi Christian: Thank you for your fast reply. I have tried to run hello.c with several configurations, but It seems that does not run. When I set dsu uart true,...
hii kalyan i like your idea of using the apb on chip registers. can u please give further insight into how to use it. as in if i write into any register (for...
First, you should read the manual. It's been a long time for me, but I'm sure there will be pointers indicating how to add peripherals. Then: Use the source,...
Tom Verbeure
tverbeure@...
Feb 5, 2003 8:12 pm
3019
How/where do I change my email adress for LeonSparc Mail? Thanks....
agompel@...
Feb 5, 2003 8:57 pm
3020
i am working on proj and decided to latest version of leon (leon2-1.0.10) ran it "out of box" and am getting cache errors? using the following: #include...
... This problems has been seen with the ncsim simulator, it does not occur with modelsim. I don't have access to ncsim so I can't debug it. The obvious remedy...
Jiri, I do not believe it is a tool issue, however there could be an issue with the hardware being in an invalid state, causing X's /unknowns to propagate into...
Hi Dabral, as tom said you must spend some time in reading AMBA manual to get to know the exact signals.The changes that u shd make in leon are 1.In device.vhd...
Steve, I have made a few correction to the cache test program, and I believe it should work with ncsim now. Could you please try it out? You can download the...
I have never used the DSU. As far as I see the DSU has nothing to do with the UART option. uart => true will only print any output on UART1 to the simulator...
Hello, I was wondering if somebody out there could help us. We are based at Loughborough university doing some research in reconfigurable coprocessors and we...
Hi Christian, Thanks once more for your reply. But now I have the folllow error: **Error vhdlsim,30: STD.TEXTIO.READ(CHARACTER)failed, trying to extract a...
Hi, I am attempting to modify the leon SDRAM controller unit to interface with 16 bit SDRAM (in the same way that 16 bit SRAM can be used, by breaking each 32...
Andrew Hall
andrew@...
Feb 7, 2003 11:14 am
3032
Just a guess... Did you connect directly to sdmctrl? - You may have to use it via the memory controller (mctrl). The interface also has configuration register...
Roland.Weigand@...
Feb 7, 2003 2:24 pm
3033
... I'm connecting to the main memory controller which should be configured to generate the sdram controller. ... I essentially have the APB bus de-activated,...
Andrew Hall
andrew@...
Feb 7, 2003 2:35 pm
3034
... Address 0x40000000 shouldn't that be an access to the SRAM, but not SDRAM? ... the ... registers. ... The config tool is only for the hardware options. But...
Roland.Weigand@...
Feb 7, 2003 2:48 pm
3035
... If SRAM is disabled 0x40000000 maps to SDRAM, and it looks to be doing that (all SRAM enables etc are staying high). ... Ok, looks like I'll have to add in...
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