mk_target_board

Altera_Forum · ‎10-01-2005

Hi,

I have created a custom board with mk_target_board command as stated under:

"Porting the Nios II Flash Programmer to Custom Boards" of the Nios II Flash Programmer User Guide - document version 1.1

CFI-Flash: AM29DL640D

Target Board: Altera PCI Development Board, Stratix (EP1S25)

I have specified:

address size: 22 bits

data size: 16 bits

but the block diagram shows address size of 23 bits (address[22..0]).

How can I correct this?

Thanks

Altera_Forum · ‎10-01-2005

Hi,

If your 29DL640D flash is 16-bit data bus, just use CFI ADDR[1..22] to map to your flash device A[0..21]. Leave CFI ADDR[0] unused.

LiangYi

Altera_Forum · ‎10-01-2005

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originally posted by liangyi@Oct 1 2005, 02:17 AM

hi,

if your 29dl640d flash is 16-bit data bus, just use cfi addr[1..22] to map to your flash device a[0..21]. leave cfi addr[0] unused.

liangyi

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Thanks for your reply

you mean leave cfi_addr[0] from the sopc generated block diagram unconnected?

By the way, do you happen to know what is the setup, wait and hold time for this flash device?

I have setup: 35

wait: 130

hold: 35

Thanks again

Altera_Forum · ‎10-02-2005

Hi,

> You mean leave cfi_addr[0] from the sopc generated block diagram unconnected?

Yes.

> By the way, do you happen to know what is the setup, wait and hold time for this flash device?

I think the default values are jusk OK. You can try.

Regards,

LiangYi