Memory Information?

[Razor]

How to get memory info(voltage,refresh rate,latency,precharge,type,fsb:dram)?

[Razor]

*push*

[Razor]

*push*

[Razor]

OMG nobody knows how to do it?

[Razor]

Okay some guy said i have to comunicate with EEPROM on memory chips through smbus but how do i comunicate?Is there a really good component for smbus?

[Muetze1]

There is definitly no component. It is not just putting your components together on the form and finish. You have to access the SMBus register of the chipset (where this register chances by vendor and even by chipset model). To access these register, you have to do hardware port access to the hardware ports of the chipset, where a new problem will come up: Windows NT and following doesn't allow application to do so. But this problem can be solved - the most problems is to collect the different chipset hardware informations about accessing the SMBus and further the documentation of the different sensor ICs connected to the SMBus. There is a wide range of different ICs. The commonly known is the LM78, but he is obsolete and mostly superseeded by new, more compact ICs. The EEPROMs of the memory modules are connected to the SMBus.

If you want some source for accessing SMBus, try to search for HWMon. This name is used by a hardware monitor in linux but also for Delphi application for measuring the fan rpms, voltages etc. They are accessed through the SMBus interface.

[Razor]

Thanks!


My motherboard is Asrock p4v88 with Winbond W83697HF sensor,speed fan shows memory info such as memory voltage and other bullshit...

Datasheet,but where to look for ports as you said..
http://www.winbond-usa.com/products/...C/w83697hf.pdf

[Muetze1]

Zitat von Razor:

Datasheet,but where to look for ports as you said..

These you will find in the hardware documentation for the southbridge of your chipset. There you will find the register documentation and ports for accessing the SMBus.

[Razor]

Speed fan shows this


Scanning SMBus at $0400...
Decoding DIMM #0
Memory type is DDR
Module Rows : 2
Levels : 2.5V
Parity : NO PARITY
Refresh Rate : 7.8us
Total Size : 512MB
Decoding DIMM #3
Memory type is DDR
Module Rows : 1
Levels : 2.5V
Parity : NO PARITY
Refresh Rate : 7.8us
Total Size : 512MB



Southbrige is VIA® 8237

[Muetze1]

Zitat von Razor:

Scanning SMBus at $0400...
Southbrige is VIA® 8237

Ok, the port is 0x400 on your southbridge, but the register documentation will be hard to get, because VIA does not publish their documentation for public. Companies can request documentation but they have to pay for this service. Try to retrieve these hardware documentation for the southbridge...