CF memory card vs CF wireless card

Hi ,

I have an ARM7TDMI based chip that has an on board CF
controller. I have coded the Linux Socket Service
Layer based on the SA11xx stuff.

Well there is a strange issue that i am seeing with
this board. 

 I am able to read the CIS of a CF memory card
properly. dump_cis prints the details as per the specs
I use a SanDisk 64MB SDCFB card and i get the full CIS
as per the data sheet properly.

But when i plugin a CF wireless card, the card
detection happens, but dump_cis complains "no CIS
present" .. i found that the Attribute memory was
giving out randomly alternating values of 0x00 & 0xFF.

The CF wireless card i use is a DCF660W from DLink and
the same card works on my laptop perfectly normal.

I think that the memory card is a CF card and the
wireless card is a CF+(CF I/O) card. 

I also noticed that the SanDisk card does not require
a RESET to read the CIS - (probably it does it
internally on power up) .. But my socket service
anyways does issue a CF_RESET when required .

1. Is there anything special to be done to handle CF
Wireless card (i.e. CF+ cards) to read the CIS space ?

2. Is there any init sequence to be followed for CF+
card power up ?

any help in this are will be appreciated,
regards,
sriram


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