68kMLA Classic Interface
This is a version of the 68kMLA forums for viewing on your favorite old mac. Visitors on modern platforms may prefer the main site.
| Click here to select a new forum. | |
| Unknown video card | |
| Posted by: marmotta on 2015-10-30 16:31:31 What is this video card?  | |
| Posted by: trag on 2015-10-30 17:10:45 What does the tag on the ROM in the lower left corner say? | |
Posted by: marmotta on 2015-10-30 18:40:55 | |
| Posted by: Byrd on 2015-10-30 19:35:04 http://lowendmac.com/video/spectrum24pdq.html Most likely | |
| Posted by: marmotta on 2015-10-31 02:39:46 Yes! Thanks! I found 2 images from two japan sites... but I found few informations. This card is fastest than onboard quadra 700 graphics? | |
| Posted by: ArmorAlley on 2015-10-31 02:57:55 Test it with Speedometer 3 or 4 and see. I would imagine so. The Quadra 700 uses the central systems RAM and CPU, so even it is just as fast as the Q700, you have mor RAM and CPU cycles at your disposal. | |
| Posted by: marmotta on 2015-10-31 05:45:03 I do not have, I have used offer | |
| Posted by: marmotta on 2015-11-26 13:04:20 The card now is my! 🙂 But I have small problem... I have a db15>svga converter and i have the dipswitch at 1024x768, at first boot all ok, if i reboot or shutdown the lcd go out of sync! I need to boot with reset pram for resolve the problem. Why???? | |
| Posted by: Macdrone on 2015-11-26 22:59:45 because native resolution is 640x480 maybe? do you have a good pram battery installed to hold proper settings that are not defaulted? | |
| Posted by: marmotta on 2015-11-27 00:18:41 Native resolution of lcd is 1024x768, but if I set (with dipswitches in converter) 640x480 the problem is the same... I think is a refresh problem, macos not allow me to change resolution or refresh and at reboot probably use 100hz refresh! The pram is ok (3,6v) | |
| Posted by: Trash80toHP_Mini on 2015-11-27 06:24:12 You'll need a Multi-Sync LCD, yours appears to be fixed at the 60Hz VGA standard. The Card's probably outputting a 75Hz refresh rate. ... but I found few informations. This card is fastest than onboard quadra 700 graphics?No, a NuBus card won't be faster than the Quadra 700's built-in video within its limited capabilities.The bandwidth limitations of NuBus make the cards slower at things like gaming or basic window scrolling, but those were never the purposes of multi thousand dollar NuBus graphics cards. More (TPD) and better (24bit depth) pixels along with QuickDraw acceleration (and DSP based acceleration for Photoshop filters for later cards) would be the stratospheric realm of NuBus Graphics. Quadra 700/900 graphics were groundbreaking for the Mac, being the first Magapixel implementation, but at a "measly" 8bits by comparison. It took three times the Quadra's 1MB max VRAM do so it at full color. | |
| Posted by: marmotta on 2015-11-27 07:31:13 I have tried three different lcd... Not exist macos program to bypass monitor auto detect and change refresh in manually? | |
| Posted by: Trash80toHP_Mini on 2015-11-27 10:08:41 The vast majority of LCDs are VESA's 60Hz VGA standard refresh rate only. Very few NuBus Graphic Cards from the 68k era support 60Hz at all and only 640x480 a/o 800x600 if that. Can't think of a single one from the 1991 time frame at all offhand. If an LCD supports the oddball "flicker-free" Mac refresh rates of 66/75Hz it'll "just work" and if not never will for the most part. I've never run across an LCD that supported multiple resolutions that didn't auto-adjust on its own. I don't think it was until the Radius/Apple 24AC twins that 1024x768@60Hz was supported by the Mac. Radius and others supported it with earlier cards, but the 24AC was Apple's first offering, IIRC. Still feeling Stuffed, Sleepy and Stupid after Thanksgiving, so don't hold me to it. :🙂 http://home.earthlink.net/~gamba2/vid-mon-matrix.html#party | |
| Posted by: marmotta on 2015-11-27 13:31:01 When work (first boot, or after pram reset) my lcd info page show me 1024x768 75.2hz and work very good. Reboot..... out of sync! | |
| Posted by: marmotta on 2015-11-28 02:40:05 I have a partial solution, when I reboot I press option key and graphic board switch all resolution, press space on good resolution and automatically reboot whit my choice. Why not save my choice? (remember pram is ok, clock is correct) In the supervideo 2.7.5 control panel if I select a screen resolution tab the program say: "unable to comunicate with your video card", I need to use another type of db15>svga converter? | |
| Posted by: marmotta on 2015-11-28 17:37:00 Incredible and strange... I solved the problem! I changed the nubus slot at the card! From the lower to the upper... Now supervideo work and my lcd don't lose the sync! 🙂 For the graphics performance I run Macbench 3.0 and the graphics score is 62% of Powermac 6100! Slow? I run the test at 1024x768x8, powermac 6100 run the test at 640x480x8!!!! And in some test I have exceeded the powermac! Is good? (i not have q700 onboard video results) | |
| Posted by: marmotta on 2016-05-26 08:40:49 Now I use this card with Quadra 950... is very fast! It will work with ppc upgrade? (my driver is supervideo v2.75) | |
| Posted by: Bunsen on 2016-05-26 23:37:24 Try it and let us know! | |
| Posted by: marmotta on 2016-05-26 23:47:27 I wait ppc upgrade 😉 | |
| 1 |