Thanks to Edgar suggestion and help, I was able to get the Thunder IV in the Dock work with RAM Doubler 2 and 8.
As it turns out, OS 7.6.1 was the problem. Installing System 7.5.5 on another partition and running some tests with various versions of RadiusWare from 2.0 to 3.4.1 and RAM Doubler 2.0.2 and 8.0.1, I was able to determine that only the RadiusDSP extension is not compatible with virtual memory, be it RD or the Memory CP. However, there is no problem with the Dynamic Desktop and Quick Color CPs, the latter being the important one as it provides acceleration. Dynamic Desktop can always be replaced by something like SwitchRes or similar software. With RAM Doubler disabled and no VM, everything works, including RadiusDSP and the Photoshop plug-in that comes with RadiusWare 3.4.1 (the latest NuBus version it seems). Conclusion: Use up to System 7.5.5 if you want to use your Thunder IV GX with virtual memory, or install as much memory as you can if you want to use up to OS 8.6 (Thunder 1360) or OS 8.5 (Thunder 1600) and no VM. The combination of the 4Gb TravelStar and the Thunder in the Dock really makes the 280c tick. I don't think I could do anything else to improve on that. I just need to get the 2300c up and running again now to make comparisons. Cheers, Francois ---------- Duo/2400 List, The friendliest place on the Net! A listserv for users and fans of Mac subportables. FAQ at <http://www.themacintoshguy.com/lists/DuoListFAQ.shtml> Be sure to visit Mac2400! <http://www.sineware.com/mac2400> To unsubscribe, E-mail to: <[EMAIL PROTECTED]> To switch to the DIGEST mode, E-mail to <[EMAIL PROTECTED]> Need help from a real person? Try. <[EMAIL PROTECTED]> ---------- Dr. Bott | 10/100 Ethernet for your 2400 is finally here! MPC-100 | <http://www.drbott.com/prod/mpc100.html> RoadTools $30 PodiumPad available at Apple retail stores, $20 Traveler CoolPad at Staples. Both in white for iBooks at <http://roadtools.com> Midwest Mac Parts ][ <http://www.midwestmac.com> After-market parts for Macs. ][ 888-356-1104 ][ MacResQ Specials: LaCie SCSI CDR From $99! PowerBook 3400/200 Only $879! Norton AntiVirus 6 Only $19! We Stock PARTS! <http://www.macresq.com>
