Way back in the Mac II era, someone discovered that certain Mac NuBus video cards could support slightly higher resolutions than the standard 640 x 480 pixels – but only with certain displays. This discovery gave birth to MaxAppleZoom, a $25 shareware control panel by Naoto Horii designed to support those higher resolution.
Although MaxAppleZoom (a.k.a. MAZ) is ancient history – version 1.44 came out in June 1993 and was the final revision – it has a legendary place in the hearts of many longtime Mac users. It allowed a resolution of 704 x 512 pixels, 17.3% more pixels than that stock 640 x 480 setting. In those days, it was a big deal.
This particular hack only works with a handful of Apple branded NuBus video cards. It is not supported with built-in video or any non-Apple card. Based on my research, it is compatible only with the following:
- Macintosh II Video Card (a.k.a. Toby)
- Macintosh II High Resolution Video Card
- Macintosh Display Card 4•8
- Macintosh Display Card 8•24
MAZ only supports a limited number of Apple-branded Mac monitors:
- 13″ AppleColor High-Resolution Monitor
- 12″ Apple High-Resolution Monochrome Monitor
- 12″ Macintosh Monochrome Display
MaxAppleZoom is known to be compatible with System 7.5.3 and probably works with 7.5.5 as well.
Version 1.3 was incompatible with SuperClock 3.9; I cannot comment on later versions. The same posting says MAZ has problems when you change color depth.
With monochrome displays, you may need to scale back resolution to 672 pixels.
I have found mention of another $25 shareware control panel, Monitor Expander, that does the same thing MaxAppleZoom does – but with a lot more resolution options (see the Read Me). The control panel is copyright 1993-1994, so it was probably meant to replace MAZ, which was no longer being updated.
I find no updates to Monitor Expander after version 1.0.1. It was only tested using System 7, so it may not be compatible with System 6. It also requires a video card with 512 KB of RAM.
- Posting by Laurent Vitou dated 1997.01.10
- MaxAppleZoom Dies?, Adam C. Engst, TidBITS, 1991.07.01
- MAZ Returns, Adam C. Engst, TidBITS, 1991.07.22
Short link: http://goo.gl/ZzUnkX