borat wrote:
How much are accelerators for A1200s usually? something to make it able to play Doom for example?
If you check out
www.eyetech.co.uk they should list the prices of a couple of 68040 accelerators. The 28Mhz version is £89.99 I believe, but you'll need memory. The maximum memory a single SIMM Apollo will take is 32Mb, so try and find a 32Mb EDO SIMM on Ebay, Amibench etc.
The 28Mhz 68040 is very overclockable (can be run beyond it's design speed) in my experience - provided that cooling is adequate. You'll need to get the power supply upgraded too as the '040 drinks a LOT of juice and with a hard drive as well you'll push the stock power supply way beyond it's limits. Even using an old A500 power supply won't solve the problem.
If you try Vesalia (
www.vesalia.de) you might be able to get your hands on a 68060 accelerator, which should be 2 - 3 times faster than the top 68040. The '060 drinks less juice and requires less cooling BUT is relatively expensive. This is the fastest CPU you'll get for "native" applications that run up to OS3.9
The 28Mhz '040 will more than be up to the task of Doom, but it will struggle with Quake. If you're just looking to play old games then a 68040 with 16Mb RAM should be more than you'll ever need. You'll get great results with Frontier on this ;-)
Re: Scandoubler.
The RGB output on your A1200 runs at a frequency of 15Khz. Most monitors won't detect a signal below 31Khz, so the Scandoubler doubles the frequency so your SVGA monitor can display the Amiga's video output. A Scandoubler and Flicker Fixer allows the rock steady display of interlaced modes too, which is handy if you use Lightwave.
As for installing on the HDD, you should have six disks containing Workbench, Extras, Locale, Fonts, Storage and Install respectively. If you don't have, or cannot get hold of these then installing your hard disk isn't going to be easy...
