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#1 2017-08-05 22:53:41

jt
Member
From: Bermuda Triangle, NC USA
Registered: 2014-05-21
Posts: 1,408

1920x1200@24bit on G4 under OS9: available options?

Looking to upgrade my 1600x1200 primary display for Win/Linux and my QS'02/OS9.2.2 primary workstation. Adding a few inches onto the left side of the 20" UltraSync to gain 320 more pixels seems a worthwhile endeavor.

Is there anything in QS or MDD AGP flavors that supports 1920x1200? Are any later rev. AGP cards backwards compatible, capable of running on slower, older AGP infrastructures?

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#2 2017-08-23 18:02:50

volvo242gt
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From: Duvall, WA
Registered: 2014-05-22
Posts: 410
Website

Re: 1920x1200@24bit on G4 under OS9: available options?

I wonder if the Radeon 9800 would do that.  Just checked, and yes, that may be your best bet.  Had one in my old G4 DA (as well as the MDD that I owned for a while).

-J


modern: Mac Pro 2.8GHz 8-core 6GB/500G/DVD-RW
Pre-Mac: ][+, //e
other: iPhone 6s 128GB Space Gray

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#3 2017-08-24 02:37:09

MacOS Plus
Member
Registered: 2015-12-09
Posts: 108

Re: 1920x1200@24bit on G4 under OS9: available options?

If OS 9 is your target then I can confirm that the ATI Radeon 9000 Pro is capable of 1920x1200.  See this post of mine on MacOS9Lives:

http://macos9lives.com/smforum/index.ph … l#msg22242

  It may even be possible to have two screens running 1920x1200 simultaneously on both digital outputs, but I unfortunately only own one 1920x1200 monitor so I could only test the second screen at 1920x1080.  I was planning to do more testing with other cards, but I was really only interested in cards that could handle dual digital output.  This would limit the single card AGP options of interest to me to the Radeon 9000 Pro, one variant of the GeForce4 MX (pending testing), and the GeForce4 Ti4600, all of which require an ADC-to-DVI adapter for one of the ports in a dual-screen setup with non-ADC monitors.  All three of these are Apple OEM cards.

  I'll do some further testing and let you know the results.  I can't remember what color bit depths were offered on these cards at the requested resolution, so I will check again and report back.

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#4 2017-08-24 04:50:36

MacOS Plus
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Registered: 2015-12-09
Posts: 108

Re: 1920x1200@24bit on G4 under OS9: available options?

I had enough time this evening to go ahead and perform testing on all of the OS 9 compatible AGP cards at my disposal.  As per monitor availability mentioned above, dual-monitor testing was performed with one 1920x1200 screen plus one 1920x1080 screen.  ADC ports were adapted to DVI where required.  The host machine was an MDD FW800 with Sonnet MDX dual 1.8GHz CPU booting the 9.2.2 Universal ASR from MacOS9Lives.com.  Here are the results:

nVidia GeForce4 Ti 4600 OEM/128MB BGA VRAM/ADC+DVI (Apple P/N 603-0939/630-3988) - ROM 1105
1920x1200 + 1920x1080 both at 24-bit color - dual digital

ATI Radeon 9000 Pro OEM/64MB TSOP VRAM/ADC+DVI (Apple P/N 603-3352/630-4845) - ROM 131
1920x1200 + 1920x1080 both at 24-bit color - dual digital

nVidia GeForce4 MX OEM/64MB BGA VRAM/ADC+DVI (Apple P/N 603-2539/630-4465) - ROM 2032
1920x1200 at 24-bit color - single digital output only
- Comments - This card is strange because it appears they made the bizarre cost-cutting decision of having two digital connectors but only one DVI transceiver chip!?!  (An older version of this card does actually have both transceivers.)  The card will detect both monitors properly and report them to the system but will only display image on one of them.  Using VGA via adapter on the second port yields a locked 640x480 resolution on the second monitor, but at least it shows picture simultaneously.  I don't know if part of the problem is limited OS 9 support in the ROM due to it having originally been part of an OS X-bundled system, or if the ROM was flashed at some point with a version that wasn't quite correct for this hardware variant.  If anyone knows a different ROM version that works correctly in this specific variant, please let me know.  If you have a source for the ROM file or can extract it, even better.

nVidia GeForce4 MX OEM/32MB TSOP VRAM/ADC+DVI (Apple P/N 603-1263/630-4023) - ROM 1121
1920x1200 + 1920x1080 both at 24-bit color - dual digital
- Comments - This is an older variant than the one above, with the older pin-style RAM and both digital transceiver chips present.  Get this one if you want dual-monitor digital output.

  That's all the stock Apple OEM cards I have that passed the test.  If you don't mind flashing a PCI card to a Mac ROM, or using VGA only, here is another card I have that you could try:

ASUS AGP-V7100(T) based on GeForce2 MX/32MB SD VRAM/VGA - flashed to Mac with modified ROM 1057.019
1920x1200 at 24-bit color - single VGA analog output

  It is highly likely that all of the cards with working dual-monitor support will also support dual 1920x1200 with full color.  If I ever get another monitor with that capability, I will test again and provide an update.  I do own a Quicksilver machine also if you think there's any reason to test the cards there for motherboard compatibility.  I don't remember having any issues with any of these cards in there though.  The card I'm currently using in it (booting OS X) is the GeForce4 MX 32MB I listed above.  It seems to work equally well there and supports Quartz Extreme.  (Even the old non-ADC Rage 128 Pro cards will work in both machines types, although they are very limited in capability.)

  ATI Radeon AGP 7000, 7200, 7500, 8500 and 9200 Mac Edition retail models should also support 1920x1200 24-bit color, given that my OEM Radeon 7000 PCI does, but only have one digital output where present.  The same should hold true for the Apple OEM GeForce2 MX and GeForce3 cards.  Somewhere I have an Apple OEM GeForce 2MX, but I would expect it to work exactly the same at the flashed ASUS one, except for the option for one digital output included.

  Hope that helps!

Last edited by MacOS Plus (2017-08-24 05:08:22)

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#5 2017-08-25 15:03:02

LCGuy
Administrator
From: Sydney, Australia
Registered: 2014-05-13
Posts: 822

Re: 1920x1200@24bit on G4 under OS9: available options?

MacOS Plus wrote:

nVidia GeForce4 MX OEM/64MB BGA VRAM/ADC+DVI (Apple P/N 603-2539/630-4465) - ROM 2032
1920x1200 at 24-bit color - single digital output only
- Comments - This card is strange because it appears they made the bizarre cost-cutting decision of having two digital connectors but only one DVI transceiver chip!?!  (An older version of this card does actually have both transceivers.)  The card will detect both monitors properly and report them to the system but will only display image on one of them.  Using VGA via adapter on the second port yields a locked 640x480 resolution on the second monitor, but at least it shows picture simultaneously.  I don't know if part of the problem is limited OS 9 support in the ROM due to it having originally been part of an OS X-bundled system, or if the ROM was flashed at some point with a version that wasn't quite correct for this hardware variant.  If anyone knows a different ROM version that works correctly in this specific variant, please let me know.  If you have a source for the ROM file or can extract it, even better.

It may have been done as a cost cutting measure, I believe this was done on quite a few graphics cards - the Radeon HD3450 that originally came in my Dell C2D from 2009 had VGA, DVI and HDMI, however it could only display an image on either DVI or HDMI, not both.

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