The following is a list of articles I have written on AmigaOS 4.1 Classic. Some of these articles are on the Hyperion Entertainment Blog.
Breathe new life into your Amiga 1200, 3000(T) or 4000(T) computer equipped with a PowerPC processor and AmigaOS 4.1 Classic! Run the latest version of AmigaOS on your Classic hardware and have lots of fun while doing it! AmigaOS 4.1 Classic has the following features:
Improved bootloader with large table MMU support
Updated kernel offering increased stability in low memory conditions
Support for virtual memory via harddisk paging
ZorRAM and DKB 3128 support as memory pagers
Improved (future proof) Mediator support with Radeon 9200 and 9250 using up to 256MB of video memory (correct voltage graphics card required)
Support for PCI sound card (ESS SOLO-1 based cards)
Warp3D hardware acceleration support for Radeon, Voodoo 3/4/5 and Cybervision / Blizzardvision PPC (stable beta version for Permedia2-based cards)
DDC automatic monitor detection for Radeon and Voodoo 3
Hardware compositing engine (Radeon only) with software fall-back
Native FastATA driver support.
Selected SATA PCI card support, based on Silicon Image 3112, 3114, or 3512 chipsets
Intelligent Installer for PCI / Zorro with automatic AGA fallback support
New classic styled Bootlogo and Backdrops