A real PowerBook: the Macintosh Application Environment on a PA-RISC laptop

In October 1997 you could have bought a PowerBook 3400c running up to a 240MHz PowerPC 603e for $6500 [about $13,000 in 2025 dollars], which was briefly billed as the world’s fastest laptop, or you could have bought this monster new to the market, the RDI PrecisionBook running up to a 160MHz (later 180MHz) PA-7300LC starting at $12,000 [$24,000]. Both provided onboard Ethernet, SCSI and CardBus PCMCIA slots. On the other hand, while the 3400c had an internal media bay for either a floppy or CD-ROM, both external options on the PrecisionBook, the PrecisionBook gave you a 1024×768 LCD (versus 800×600 on the 3400c), a bigger keyboard, at least two 2.5″ hard disk bays and up to 512MB of RAM (versus 144MB) — and HP-UX.

And, through the magic of Apple’s official Macintosh Application Environment, you could do anything on it an HP PA-RISC workstation could do and run 68K Mac software on it at the same time. Look at the photograph and see: on our 160MHz unit we’ve got HP-UX 11.00 CDE running simultaneously with a full Macintosh System 7.5.3 desktop. Yes, only a real Power Mac could run PowerPC software back then, but 68K software was still plentiful and functional. Might this have been a viable option to have your expensive cake and eat it too? We’ll find out and run some real apps on it (including that game we must all try running), analyze its performance and technical underpinnings, and uncover an unusual artifact of its history hidden in the executable.
↫ Cameron Kaiser at Old Vintage Computing Research

I actually have Apple’s Macintosh Application Environment installed and running on my PA-RISC machines, and it’s incredible just how well-made and complete it really is. You get a full Mac desktop and its applications, excellent integration with the host, file sharing between host and client, and so much more. Running it on newer versions of HP-UX than it was originally intended for does lead to the odd issue here and there, but due to HP-UX’ excellent backwards compatibility, it all just works.

It has created this odd situation that my 2004 HP c8000 machine, with two of the fastest dual-core PA-RISC processors ever made, will most likely be the fastest machine I’ll ever officially run classic Mac OS on. Sure, you can use other emulators not created and blessed by Apple and run classic Mac OS on much faster hardware, but if you want to stick to official, supported methods of running the classic Mac OS, it doesn’t get much faster than this.