Hello,

I've got an Efar Motherboard https://stason.org/TULARC/pc/motherboards/M/M … H4077D-142.html

Unfortunatly I am unable to activate Writeback. I have tracked down 3 Writeback Pins to their Jumpers, but i'm unable to find the 4th Jumper - this Pin is also unconnected (no Diodedrop to Ground).
http://ps-2.kev009.com/eprmhtml/eprmx/h12203.htm

B13 (WB/WT) is JP47, A10 (INV) is JP43, A12 (HITM) is JP28 and B12 (Cache) is'nt connected.

Now I'm searching for a Datasheet for my EFAR 82EC802GL Chipset, or someone who has a Motherboard with this Chipset running in WB Mode and can check which Pin of the Chipset is connected to B12 of the Socket.

Thanks in advance, Dose

PS. I've attached some Dokumentation from ftp.megatrends.com. In Chapter 8 are the Chipsetregisters (Port 22h=Index, Port 24h=Data) - quite useful for some Performance Improvements 😁