JetWay V266B Vcore option missing
Posted: Thu Oct 19, 2006 5:34 pm
Once a while back, my stepbro, when first problems thanks to the GSC caps surfaced on the JetWay V266B mobo, flashed the mobo with a new bios. It don't help a thing, but it does cause something.
From that time the Vcore option in bios was never seen again. Ever. Todays I did some work on it, and discovered that:
1) flashing older A12 revision cause totally trashed image on screen in DOS/bios, so useless
2) flashing latest A13 bios fixed that, however in both cases no Vcore option
3) fired up a Modbin6 and loaded the bios, and Vcore was shown as normally visible in he tool, however when one mark some Vcore options as "unselectable", it is impossible to change them back to selectable...!
Futhermore I tried to set as default 1.600Vcore (both bios and system), yet also no change in the actual Vcore...
4) mainboard jumper switches for choosing a multiplier won't work. In fact, choosing a multi 6x cause not-post, so I have to remove all the jumpers to get machine into working state...
My question is - can anyone look at the bios and check out what it wrong with it? I mean - I intend to run the 2800+ at 150x14 - 2100Mhz. The catch is, that this require switching to high multipliers (the mobo switches are from 5x to 12.5x, so in high multi the 5x will be 13x, 5.5x will be 13.5x and 6x will become the wanted 14x multi) but that should be possible to do by this mod:
Now what is wrong with this bios when it run on AXP, I did not understand. Why the Vcore did not shown? Why the selectable-nonselectable can be reversed? Why the selection did not working?
Maybe there is a simple bug in the bios, but I fail to see it - certainly in the Modbin6
JetWay V266B A12 bios: http://ax2.old-cans.com/V266BA12.ZIP
JetWay V266B A13 bios: http://ax2.old-cans.com/V266BA13.ZIP
JetWay V266B A13 moded by me bios: http://ax2.old-cans.com/V266BA14.ZIP
(just changed the settings the way I selecting them, leaved the ram timings and stuff at default for possible other users, tough)
Modbin6: http://www.lejabeach.com/sisubb/Modbin6.zip
Mod done to unlock multipliers: http://www.lostcircuits.com/cpu/amd_unlock/
From that time the Vcore option in bios was never seen again. Ever. Todays I did some work on it, and discovered that:
1) flashing older A12 revision cause totally trashed image on screen in DOS/bios, so useless
2) flashing latest A13 bios fixed that, however in both cases no Vcore option
3) fired up a Modbin6 and loaded the bios, and Vcore was shown as normally visible in he tool, however when one mark some Vcore options as "unselectable", it is impossible to change them back to selectable...!
Futhermore I tried to set as default 1.600Vcore (both bios and system), yet also no change in the actual Vcore...
4) mainboard jumper switches for choosing a multiplier won't work. In fact, choosing a multi 6x cause not-post, so I have to remove all the jumpers to get machine into working state...
My question is - can anyone look at the bios and check out what it wrong with it? I mean - I intend to run the 2800+ at 150x14 - 2100Mhz. The catch is, that this require switching to high multipliers (the mobo switches are from 5x to 12.5x, so in high multi the 5x will be 13x, 5.5x will be 13.5x and 6x will become the wanted 14x multi) but that should be possible to do by this mod:
Now what is wrong with this bios when it run on AXP, I did not understand. Why the Vcore did not shown? Why the selectable-nonselectable can be reversed? Why the selection did not working?
Maybe there is a simple bug in the bios, but I fail to see it - certainly in the Modbin6
JetWay V266B A12 bios: http://ax2.old-cans.com/V266BA12.ZIP
JetWay V266B A13 bios: http://ax2.old-cans.com/V266BA13.ZIP
JetWay V266B A13 moded by me bios: http://ax2.old-cans.com/V266BA14.ZIP
(just changed the settings the way I selecting them, leaved the ram timings and stuff at default for possible other users, tough)
Modbin6: http://www.lejabeach.com/sisubb/Modbin6.zip
Mod done to unlock multipliers: http://www.lostcircuits.com/cpu/amd_unlock/