> > > > >>I also tested another Winbond chip W83627THF with the driver w83627hf.c >>find that this phenomena does NOT exist on W83627THF. That's to say all >>the device files of W83627THF can be read very quickly almost without any >>delay, just like regular text file. >> >> > >This is due to the speed difference between I2C (SMBus) and ISA. ISA is >really fast, I2C/SMbus is comparatively very slow. > http://www.maxim-ic.com/appnotes.cfm/appnote_number/356 Please check the above link for I2C speed. Well, I am no way a hardware guy but I would like to figure out why it's slow using I2C bus then I searched the net. Accroding to the above page, the speed is 100Khz, well, it's indeed slow. No wonder we can feel human sensible delay while reading ALL registers. thanks pals for all your help techeng ===========================================================================================The privileged confidential information contained in this email is intended for use only by the addressees as indicated by the original author of this email. If you are not the addressee indicated in this email or are not responsible for delivery of the email to such person, please kindly reply the sender indicating accordingly and delete all copies of it from your computer and network server immediately. We thank you for your cooperation. It is advisable that any unauthorized use of confidential information of Winbond is strictly prohibited; and any information in this email that does not relate to the official business of Winbond shall be deemed as neither given nor endorsed by Winbond.===========================================================================================If your computer is unable to decode Chinese font, please ignore the following message. They essentially repea! t the English statement above.???H???????t?????q?l???]???????K?????T, ?????v???o?H?H???w?????H?H???\????. ?????z???D?Q???w?????H?H???]???????]?b???g???v?????????U???????H??, ???z?i?????o?H?H?????Y?N?H???q?q???P???????A???????H????. ?????z???X?@, ?????????P??. ?S??????, ???????g???v?????????????q?l?????K???T???????O?Q?Y???T????. ?H???P?????q?l???~?L???????e,???o?????????q?l?????????N??. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.lm-sensors.org/pipermail/lm-sensors/attachments/20041206/40a49a75/attachment.html