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Hi all

Hi Roger,
hard to say where the problem could be. I can tell you that the same
configuration of OR1200 (except on Xilinx Virtex) works. I'd suggest you
make sure when you look at the dwb_adr_o you take into account also the
dwb_cyc_o and dwb_stb_o. They have to be both active !! If they are not you
need to ignore dwb_adr_o. Also you can try a configuration with DC or/and IC
enabled, maybe it changes something...

I'd strongly advise that you run RTL simulation first and only later go to
real HW. You will save a lot of time this way.

regards,
Damjan

----- Original Message ----- 
From: "Roger Zhou" <022021130@f...>
To: <openrisc@o...>
Sent: Sunday, December 28, 2003 12:04 PM
Subject: [openrisc] problem: OR1200 on Altera board

> Hi all
>
> I'm running OR1200 on an Altera Stratix board, the data address from
> OR1200 (dwb_adr_o) is incorrect.
> The hardware include OR1200 (no IC, no DC, no IMMU, no DMMU, no DU,
> no PM), UART, GPIO on-chip RAM and WISHBONE Conbus. following is
> the program:
>
> uart-nocache.or32:     file format elf32-or32
> 00000100 <_reset_vector>:
>  100: 15 00 00 00 l.nop 0x0
>  104: 15 00 00 00 l.nop 0x0
>  108: 9c 40 00 00 l.addi r2,r0,0x0
>  10c: 9c 60 00 00 l.addi r3,r0,0x0
> ... ...
>  17c: 9f e0 00 00 l.addi r31,r0,0x0
>  180: 18 60 00 00 l.movhi r3,0x0
>  184: a8 63 23 a8 l.ori r3,r3,0x23a8
>  188: 44 00 18 00 l.jr r3
>  18c: 15 00 00 00 l.nop 0x0
> ... ...
> 00002324 <_main>:
>     2324: 9c 21 ff ec l.addi r1,r1,0xffffffec
>     2328: d4 01 48 00 l.sw 0x0(r1),r9
>     232c: d4 01 50 04 l.sw 0x4(r1),r10
>     2330: d4 01 60 08 l.sw 0x8(r1),r12
>     2334: d4 01 70 0c l.sw 0xc(r1),r14
>     2338: d4 01 80 10 l.sw 0x10(r1),r16
>     233c: 07 ff ff 36 l.jal 2014 <_uart_init>
> ... ...
> 000023a8 <_start>:
>     23a8: 18 20 00 00 l.movhi r1,0x0
>     23ac: a8 21 10 28 l.ori r1,r1,0x1028
>     23b0: 18 40 00 00 l.movhi r2,0x0
>     23b4: a8 42 23 24 l.ori r2,r2,0x2324
>     23b8: 44 00 10 00 l.jr r2
>     23bc: 15 00 00 00 l.nop 0x0
>
> I use an oscillosope to observe the signal. When first store instruction
> execute (address 2328), dwb_adr_o is 'ffffffd8', but I think it should
> be '00001014'.
>
> Is there anything wrong in the program or the hardware?
>
> Thanks,
>
> Roger Zhou
> <022021130@f...>
>
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