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Thread: BIOS çà êëîê íà Axle5900XTPro ?
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24th December 2004 23:03 #1
BIOS çà êëîê íà Axle5900XTPro ?
àêî íÿêîé çíàå ñ ê'úâ ÁÈÎÑ äà ñìåíÿ default-ñêèÿ ÷å ìàé çàðàäè íåãî íå ñòàâà íèêàêúâ êëîê...
ìîãà äà åêñïåðèìåíòèðàì, àìà äà íå ñòàíå äà ñè òúðñÿ PCI êàðòà ïîñëå çà äà âúðíà îðèãèíàëíèÿ ÁÈÎÑ
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25th December 2004 05:06 #2
àç íå ñúì òî÷íî ñ òàÿ êàðòà íî â ìîìåíòà ñúì ñúñ òîçè áèîñ - 5950Ó 500/1000 ñúñ îïðàâåí òðîòëèíã è âîëòàæè(ñåòíàòî âñè÷êî íà 1.5Â)
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25th December 2004 16:29 #3
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25th December 2004 20:00 #4
XM6002B, ïðåãëåäàõ ñòèêíàòàòà òåìà è íå å êîìåíòèðàíà òàêàâà êàðòà, à íîâà òåìà íàïðàâèõ çàùîòî ìèñëÿ, ÷å òàêà èìà ïî ãîëÿì øàíñ çà îòãîâîð
alexv, 10x ñåãà íÿìà äà ïðîáâàì à è íÿêîëêî äíè íÿìà äà èìàì RAM. Êàòî ñè âçåìà ùå ïðîáâàì
500/1000 íå å ëè ìíîæêî çà ÕÒ (îñîáåíî ïàìåòòà)42;
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25th December 2004 20:55 #5
íÿêîè ñè ðàáîòÿò áåç ïðîáëåì...ìîÿòà å åäíà îò òÿõ ÿâíî
ìîæåø äà ñè ãî åäèòíåø íà êàêâèòî ÷åñòîòè èñêàø ñúñ MHz5900 ïðèìåðíî (â äàòàòà ÿ èìà) - XM6002B ïðåäè å ïèñàë çà íåÿ
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25th December 2004 21:45 #6
mhz5900 ÿ èìàì, íî áåçîïàñíî ëè å äà ñå åäèòâà ñ íåÿ ?
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25th December 2004 22:13 #7
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29th December 2004 00:34 #8
Èíòåðåñíà íîâà âúçìîæíîñò â íîâîãîäèøíèÿ ðèâàòóíåð
ò.í. VID, ïîäðîáíîñòòè â öèòàòà :
QNX ïèñàë(à):
fin
÷òî ïîêàçûâàåò Core VID è äëÿ ÷åãî îí íóæåí â ìîíèòîðèíãå?
ïåðåêëþ÷åíèå ìåæäó 2ä/3ä ÷òî ëè?
VID (voltage identifier) ÿäðà. Åñëè êàðòà íà ISL6569 (òî áèøü NV38, NV30 èëè NV35 èëè íà ïîëíîöåííîé PCB îò 5900U), ìîæåøü ïåðåêëþ÷èòü îòîáðàæåíèå VID â îòîáðàæåíèå ñîîòâåòñòâóþùåãî åìó íàïðÿæåíèÿ. Äëÿ îñòàëüíûõ êàðò ìîæíî áåç ïðîáëåì ñäåëàòü èíòåðïðåòàòîð VID ñàìîñòîÿòåëüíî. Äåòàëè â FAQ:
Öèòàòà:
Q: There are a lot of rumors about GeForceFX software voldmods on the net. I've seen some online BIOS voltmodding tutorials and even volmodded BIOSes available for download. Can you comment it?
A: Yes, GPU core voltage is really software controllable on GeForce FX graphics processors. Unfortunately, all online BIOS volmodding guides I've seen seem to be written using blind comparison of different BIOS binaries without actual understanding of software voltage control internals. So they contain some logical errors. The same applies to some voltmodded BIOSes available for download on some websites.
To understand internals of software voltage control, let's start from the very beginning. NVIDIA boards have some GPU controllable GPIO (General Purpose Input Output) pins, which are used for different purposes. Up to three of these pins can be used to control core voltage on GeForce FX based boards. The states of this pins form binary word (up to three bits width), which uniquely identify target core voltage. This word is called VID, or voltage identifier. So to program desired core voltage driver simply sets each pin to the corresponding state via the corresponding GPIO register. But VID interpretation entirely depends on the PCB's core voltage generation logic, for example most of NV35/38 boards control core voltage via ISL6569 IC, where its' VID0 and VID1 input pins are hardwired to 0 / 1, and VID2 - VID4 pins are programmable by GPU. So core voltage on these boards can be adjusted in 0.8 - 1.5V range with 0.1V granularity and all three GPIO pins are used. Other boards may have (and do have) simpler voltage control logic (e.g. simplest 1-bit VID selecting one of 2 predefined voltages). As I've said before, VID interpretation may differ depending on the PCB design, and driver knows nothing about it. To allow hardware vendors to alter voltage control logic safely, NVIDIA introduced so called voltage tables in BIOS with BMP structure version 5.25 and newer. For older BIOSes driver uses its' own GPU-specific internal voltage table. Voltage table begins from the header, containing total amount of voltage entries, size of each entry and valid VID bitmask. The last field is the most important, because it 'tells' the driver which pins actually control the voltage. For example, nobody prevents hardware vendor from using 2-bit VID defined by pin 0 and pin 2. In this case VID bitmask will contain 101b. Take a note, that the driver will never program masked pins. Array of voltage table entries follows by the header. Each voltage table entry contains target voltage identifier (target voltage (in Volts) * 100) and VID defining this voltage. The first element of each entry (i.e. target voltage identifier) is used just to allow the driver to pick the corresponding VID from the table (because the driver knows nothing about VID, it knows just the target voltage picked from the corresponding performance level entry in the performance table). So when programming the voltage, the driver simply picks required voltage entry from the table by scanning all voltage table entries, comparing target voltage identifier with voltage identifier of each entry and selecting the closest entry. When the entry is selected, the driver disassembles VID on separate bits, and programs each non-masked bit via the corresponding GPIO register.
If you've read all this info carefully, you may already see logical errors and potential problems in currently walking voltmodded BIOS yourself:
First, it's plain wrong to voltmod BIOS by copying 1.5V VID from NV38's voltage table to all other BIOSes without seeing the PCB and its' voltage control logic as it is advised in BIOS voltmod tutorials. VIDs do not have to be the same on all boards.
Second, it's wrong to ignore VID bitmask and to edit voltage table entry's VID only. As an example, let's take a board with the following 2-bit VID: 00 -> 1.1V, 01 -> 1.2V, 02 -> 1.3V and 03 -> 1.4V. Attempt to boost voltage by increasing VID to 4 will actually lower voltage and result in setting 1.1V (4 & 3 = 0). Attempt to boost voltage by copying NV38's 1.5V VID (7) will simply do nothing (7 & 3 = 3). The same attempt on the board with different 2-bit VID interpretation (e.g. 01 -> 1.4V, 02 -> 1.3V, 03 -> 1.2V) will also lower voltage and set it to 1.2V. So if you can actually see the PCB and are sure that there are more than 2 bits in VID - you've to change VID mask too. Otherwise, you simply shouldn't touch it.
To help you to see if your voltmodded BIOS really affects VIDs, RivaTuner gives you an ability to monitor state of voltage related GPIO pins in realtime, so you may see which VID is currently programmed by the driver. Using RivaTuner's VID interpretation feature you may also see both raw VID data and target voltage corresponding to this VID (to select VID interpretation mode right-click VID graph in the hardware monitoring window, select Setup from the context menu and press More button). Furthermore, RivaTuner's diagnostic report module allows you to see internals of voltage table stored in VGA BIOS and warns you if there are some entries with invalid VIDs, which don't conform to VID bitmask.




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