|
|
Post by afxgroup on Dec 31, 2009 11:42:34 GMT
Hi, i'm trying to flash an original NVIDIA Geforce 7800GS AGP with 512MB of RAM with various BIOS found on themacelite and also with Gainward BIOS found here.With macelite BIOS (those with 256MB) The mac starts correctly and i see also the apple logo with the wheel that load the OS, but when the finder should start the monitor goes in power saving mode. in OSX safe mode the card is recognized and is working correctly. So maybe it is a problem on a kext that doesn't recognize the card. So i've opened and changed NVDANV40Hal*.kext i've add my key card: 0x00f510de&0xfff0ffff i've repaired the permissions and i've removed the Extensions.mkext but at reboot always the same.. blank screen.. i'm sure that the system has started since i can hear the disk but no video I've put on my site the original PC BIOS rom. it seems to be an original NVIDIA model. On the video cart there is nothing about the manufacturer except for then fan that has the NVIDIA logo on the barcode there is the model: GeForce 7800GS 512M AGP DDR3 TVO DVI the bios can be found here: www.amigasoft.net/test/original7800GS.rar The original BIOS was 5.70 so the card should be usable.. but maybe i need a differen rom or maybe i need to hack some files.. i have a dual G5 with AGP (of course..) Thank you |
|
|
|
Post by aquamac on Jan 2, 2010 17:38:31 GMT
Which version of OS are you using. On Leo you need to delete AppleHWSensor.kext to be able to boot.
|
|
|
|
Post by afxgroup on Jan 3, 2010 11:50:46 GMT
Uh, really?
i'm using Leopard 10.5.8 on a DualG5
Where i can find some info about it?
|
|
|
|
Post by aquamac on Jan 3, 2010 12:01:03 GMT
I don't think there is much info around about it, but a number of us found it had to be done when changing from Tiger to Leo. Are you actually using a Gainward card - I thought that was the only AGP card with 512 mb ram. We could never get AGP beyond 256 mb and had to change the rom to 256 otherwise we got a kernel panic on the Gainward.
|
|
|
|
Post by blacksheep on Jan 4, 2010 0:13:49 GMT
Hi afxgroup and Aquamac, This looks a little strange to me, this card seems not to be a Gainward product. Look at screens from NiBiTor (original Gainward Bliss BIOS is on the right):   Only device ID matches between them, the rest is different: clocks, board and product ID. BIOS version matches EVGA 7800 GS: look here (but EVGA's CO clocks should be 430/650) and it's older than any Gainward Bliss 7800 that i have found. afxgroup: do you tested this card in PC? It shows 512 MB RAM? Is it looks like this? Regards, black |
|
|
|
Post by afxgroup on Jan 4, 2010 14:19:45 GMT
I don't think there is much info around about it, but a number of us found it had to be done when changing from Tiger to Leo. Are you actually using a Gainward card - I thought that was the only AGP card with 512 mb ram. We could never get AGP beyond 256 mb and had to change the rom to 256 otherwise we got a kernel panic on the Gainward. No ti doesn't seems to be a Gainward but an original NVIDIA product. I'll try this evening to reflash the 256MB BIOS version and remove that kext to see if the MAC starts correctly. |
|
|
|
Post by afxgroup on Jan 4, 2010 14:44:31 GMT
|
|
|
|
Post by afxgroup on Jan 4, 2010 18:05:59 GMT
Well, today i've also tried to remove the AppleHWSensor.kext but without success.
The mac elite roms seems to be working at least at system level that's because without that .kext the G5 after some minutes accelerate the fan at maximum level, and this behaviour is the same also with the 7800GS instead of my 6800 Ultra
Another strange thing is that the monitor doesn't go in power saving mode now but it goes out of range.
It says to me that the choosed mode (16.5 khz, 16Hz) is not valid.. well.. 16HZ should be not valid..
I was thinking that was the DVI/VGA converter that could avoid OSX to get DCC modes correctly.. but also with VGA is the same..
The only thing i could try is to run VNC server and try to connect with VNC to see if the system is really on
|
|
|
|
Post by blacksheep on Jan 4, 2010 21:33:25 GMT
There is something messed-up with this card. GPU-Z shows (on screens from your link) g71 core and 24 pipes = it's not 7800 but 7900 core. Vendor is described as BFG Tech - they never made 512 MB G70 or G71 AGP card AFAIK. With G71 GPU BIOS rev. should be 5.71 XXXXX not 5.70 XXXXX. Also on screens there are clocks 400/1200 not 350/500 like i have checked with NiBitor from BIOS you have posted. Also this sticker on card's cover looks like self-made. edit: BIOS version 5.70.02.33.07 was also used on BFG 7800GS OC 256 MB - i got one and i checked sticker. And most important: your card is 3.3V keyed - i noticed it in this moment = it can't be 7800. 7800 are always Universal 1.5V AGP 3.0 (1.5V keyed). It's definitely fake. Look here: www.playtool.com/pages/agpcompat/agp.html |
|
|
|
Post by afxgroup on Jan 13, 2010 8:33:02 GMT
Uhm.. i'm reading around about AGP & Co.. but my short question is.. Why in VGA mode the Mac works correctly and not with normal mode?
Maybe i should remove the big fan to see if there is something about its chip?
|
|
|
|
Post by blacksheep on Jan 13, 2010 8:53:19 GMT
If you remove fan things should to clear-out, i think. On chip you will find all the info. Also PCB design will tell you what you got. Backside of card (pics from ebay) is similar to 6800s that i have seen. Post pictures of card's front (without fan) somewhere.
|
|
|
|
Post by afxgroup on Jan 16, 2010 9:19:50 GMT
|
|
|
|
Post by blacksheep on Jan 17, 2010 9:19:28 GMT
Yeah, it seems, but there is one important thing: officially AGP version of 7800 GTX has never been released AFAIK. And this 3.3 V AGP key... Weird. Now it's clear from those 24 pipes/8 vertex came from: www.pcper.com/article.php?aid=150&type=expert&pid=2I have BFG 7800GS (AGP), 2 GTXes and GT (PCIe). I will take a look on their chips and try to do some more research on the web (i found nothing about 512 Megs AGP 7800 except Gainwards). Anyway, if no ROM from TME or from Aqua is working, i'm still thinking that whatever it is - it's not flashable. |
|
|
|
Post by afxgroup on Jan 17, 2010 11:45:18 GMT
but i don't understand why with 256MB version of other 7800 on safe mode (VGA i mean) the mac start without any problem and it is usable. Don't you think that can be flashed with those roms (maybe changing something)? With Gainward one the system start but the VGA mode is unusable. reading on wikipedia en.wikipedia.org/wiki/Comparison_of_NVIDIA_Graphics_Processing_Units#GeForce_7_.287xxx.29_seriesit seems like 7800GTX should have a SLI connector and mine doesn't have one.. So it seems a 7800GS but with 512MB and an AGP 3.3v keyed.. or maybe it is a PCI-E like card (GeForce 7800 GTX 512 on wikipedia) but with AGP bus.. very very strange card..  |
|
|
|
Post by blacksheep on Jan 17, 2010 18:44:20 GMT
With safe mode it's similar to this: strangedogs.proboards.com/index.cgi?board=experiments&action=display&thread=2745 - flyproduction's posts about Bliss ROM. I'm not that good to know why... To flash it with any of TME ROMs you should rewrite ROM on base of original PC rom - edit hardware specific settings, etc. This is basically this, what Rubytuesday (i think that it was him, but i can be wrong) and Aquamac have done to make Gainward Bliss usable. I don't really know is this could be done with your card, cause it's so strange hybrid-card and i'm not good enough in ROM editing to help you  Try to contact Rubytuesday or Amacapart on Strangedogs - they are sometimes active... However, if it could be done, you get only 256 Megs. In fact, i think that lot easier is to find G70 based card which is confirmed to working: Gainward Bliss 512, BFG OC or EVGA, INNO3D. BTW, i found another one like your: cgi.ebay.com/AGP-New-Nvidia-Geforce-7800GS-512MB-DDR3-7800-GS-AGP_W0QQitemZ270447764941QQcmdZViewItemQQptZPCC_Video_TV_Cards?hash=item3ef7f165cd#ht_1112wt_894 - somebody asked about it on SD. |
|
