[ixp1200] [In ixp2400/2800 programming] chapter 5. nextblock?

[David Mentre]

Hello,

> From: paragon [mailto:commoon at wins21.com]

> Present,  not trasmitted from RX to TX in enp-2611(ixp2400).
> 
> To see in chapter 5, 
>     373    immed32(dl_next_block, SPI4_RX_NEXT_BLOCK)
> 
> What's Nextblock?

dl_next_block is a context sensitive registers that stores the identifier
of the next microblock to which send the packet.

It is used within the dl_sink[] macro, in Rx microblock.

> #define SPI4_RX_NEXT_BLOCK  0x24
> 
> what's difference in ixp2400?

I don't understand your question.

> In chapter 5, what's difference between ixp2400 and ixp2800?
> How to modify in chapter.5 ?

Basically, the SPI4 mode does not exist on IXP2400. You should rewrite
configurations steps. Maybe other things should be also changed. I don't
know more as I haven't look at the code provided with the book.

If you want to program on IXP2400, you'd rather start from SDK reference
designs. You will find several designs on SDK Application CD-ROM. If you
don't have it, ask your Intel representative.

Yours,
d.
-- 
David MENTRE <mentre at tcl.ite.mee.com> - Research engineer (Ph.D.)
Mitsubishi Electric ITE-TCL / European Telecommunication Research Lab
Phone: +33 2 23 45 58 29 / Fax: +33 2 23 45 58 59 
http://www.mitsubishi-electric-itce.fr