What is it
ViewFinder is the ultimate video upgrade for the Acorn Risc PC, exploiting the power of mainstream AGP video cards. Larger screenmodes and more performance result in a more comfortable and smoother desktop experience than ever before.
ViewFinder is an expansion card, and simply plugs into a free 'podule' slot in the Risc PC. All existing screen modes are supported automatically, new ones can be created quickly and easily.
By exploiting hardware acceleration, ViewFinder speeds up many drawing operations, among which the most important ones used on the desktop, such as rectangle copy (for moving windows around) and rectangle fill (for drawing window and menu backgrounds). By a huge factor (see below). Your desktop background will be drawn at a similarly improved speed, thanks to ViewFinder's sprite cache. Your windows will pop up in a flash, and literally zip along the screen when moved around. Regardless of the resolution or colour depth of the screen mode.
|Plain Risc PC||With ViewFinder||Factor|
|Rectangle copy||11 MB/sec||612 MB/sec||55 x|
|Rectangle fill||17 MB/sec||1.2 GB/sec||70 x|
ViewFinder is compatible with all Risc PCs running RISC OS 3.7 or higher, including the latest versions of Select and Adjust.
For more information, refer to the ViewFinder documentation, which you can read online or download.
Your own ViewFinder
As a result of recent stock taking, a last few brand new dual-head DVI Radeon 7000 Viewfinders are available at this time. If you are interested in one of them, contact me a.s.a.p. for details.