Mac OS 9 Lives

Mac OS 9 Discussion => Hardware => Video Cards, Monitors & Displays => Topic started by: teroyk on April 06, 2020, 01:58:36 AM

Title: Lowest supported resolution in Mac OS 9.2.2
Post by: teroyk on April 06, 2020, 01:58:36 AM

Is there low limit in graphics resolution in Mac OS 9.2.2?
Example the original Macintosh resolution: 512×342 1-bit (b/w)

Lowest I can get is 640x480 8-bit (256 grayscales)
I have seen 640x480 1-bit at Mac OS 8.1.
I have CRT that support down to 320x200 resolution and it would be nice to test.

Title: Re: Lowest supported resolution in Mac OS 9.2.2
Post by: darthnVader on April 06, 2020, 05:44:14 AM

Likely, any New World ROM Mac would be 8bit by default, but screen resolutions would be a matter of the graphics cards 'NDRV' and EDID of the display.

Old World Macs with Open Firmware and PCI slots may also be limited to 8bit color/grays.

Title: Re: Lowest supported resolution in Mac OS 9.2.2
Post by: teroyk on April 06, 2020, 01:24:37 PM

new lowest found: 512x384 8-bit at 50hz
With Powerbook G4 (radeon 9000) S-video-output to television.

Title: Re: Lowest supported resolution in Mac OS 9.2.2
Post by: teroyk on May 31, 2020, 04:32:12 AM

Village Tronic MP 960 and MPDD Pro specifications says supports 320x256 24-bit colors at 50 Hz. Has somebody those cards to test how less colors can be?

EDIT: Also MP850 and MacMagic Pro (3dfx Voodoo Banshee based cards) support that.

Title: Re: Lowest supported resolution in Mac OS 9.2.2
Post by: IIO on May 31, 2020, 09:27:08 AM

good find. :) voodoo 4.x already had a minimum of 480x or 640x when i remember right - same as powermac 7300 built-in video.