Well, my thoughts: 1) They are not running one OS over another - the Apple machines are dual boot - Mac OS or Win7.
2) One machine takes up less space, less power. 3) FireWire is hard to get on a PC out of the box. -------------------------------- Justin KB1TFH On Jun 14, 2012, at 11:42 AM, Robert Costa, KB6QXM wrote: > Let me understand something. With the inexpensive hardware that is available > that will run PSDR, why do people try to bend their APPLE products into > running real-time audio processing applications. Why not just buy a dedicated > $300 PC for the Flex and be done with it? > > I am perplexed at all of the tweaking that is done on the Apples to run PSDR. > One OS sitting on top of another and an emulator to glue it all together. > Nothing native. Why go through all of that hassle? > > Just curious. > > 73, > Robert > KB6QXM > "Ham Radio Open Conversation" > Yahoo group owner/moderator > > > ----- Reply message ----- > From: "Sheldon Hartling" <ve1...@rac.ca> > To: <FlexRadio@flex-radio.biz> > Subject: [Flexradio] Touch-Screen All-in-One computer (late-2009 iMac) > Date: Thu, Jun 14, 2012 8:31 am > > > I've made a little progress and the iMac 27 is working better. Here's what > I've done > > * Turned off thes features in Windows 7 control panel Programs & Features: > Tablet PC components; Windows Gadget Platform; XPS Services; XPS Viewer; > * Installed GBoost (www.gzero.com) and run it before PSDR; > * Switched to Legacy Firewire driver; > * Stopped "AppleOSSMgr.exe" process (not sure if this will make a > difference, but its been attributed to DPC spikes on some support websites); > * Reduced the size of the PowerSDR main window. > > This last one is interesting. If I resize PSDR to take about 3/4 of the 27" > screen it seems to run normally. Once it reaches that size, if I make it > any bigger the CPU% display stops updating and the FlexControl works > erratically. Is this a known issue? As soon as I shrink it back down the > Flex-Control catches up. > > The DPC Latency is running in the 60uSec to 140uSec range with bumps to ~500 > every half hour or so. I left it running PSDR and DPC Latency Checker > overnight last night but the display was messed up this morning and the > latency checked showed a max of 4000. So there's still something causing > occasional spikes. The longest delays normally measured with Latency Mon > are in NDIS and the Nvidia network controller. I tried bumping the nVidia > NIC driver back a version but it didn't seem to make any difference. > > Any advice appreciated! Especially from those who are successfully running > PSDR on an iMac. > > 73, Sheldon VE1GPY > > > From: Sheldon Hartling <hartl...@netpathinc.com> > Date: Wednesday, 13 June, 2012 2:42 PM > To: "Justin M. Mayrand" <jmayr...@metrocast.net>, Sheldon Hartling > <ve1...@rac.ca> > Subject: Re: [Flexradio] Touch-Screen All-in-One computer (late-2009 iMac) > > Thanks Justin. > > I have BootCamp 4.0 installed. I tried going back and installing individual > drivers from the drivers directory on the BootCamp DVD and doing a BootCamp > repair but it didn't seem to make any difference. > > 73, Sheldon VE1GPY > > > > From: "Justin M. Mayrand" <jmayr...@metrocast.net> > Date: Wednesday, 13 June, 2012 2:02 PM > To: Sheldon Hartling <ve1...@rac.ca> > Subject: Re: [Flexradio] Touch-Screen All-in-One computer (late-2009 iMac) > > You will need to install the Apple supplied BootCamp drivers package > (assuming you have not). > -------------------------------- > Justin > KB1TFH > > On Jun 13, 2012, at 12:16 PM, Sheldon Hartling wrote: > >> >> I didn't end up buying the touch-screen at least not in "this round". I >> bought a used iMac 27" (late 2009 model) on Kijiji. I've upgraded it to OSX >> Lion and installed Windows 7 SP1 using BootCamp. However, I'm having DPC >> Latency problems that I haven't been able to solve so far. I've tried the >> "usual" things, setting power options, disabling services, disabling >> devices, turning off kernel paging. No luck. >> >> If there is anyone in the group running PowerSDR on a late-2009 27" iMac >> could you please contact me on/off the list? Thanks. The specs are: 3.06 >> GHz Intel "Core 2 Duo" processor (E7600), a 3 MB shared level 2 cache, a >> 1066 MHz system bus, 4 GB of RAM (1066 MHz PC3-8500 DDR3 SDRAM), a 1 TB >> (7200 RPM) hard drive, and ATI Radeon HD 4670 graphics with 256 MB memory. >> >> My older 13" black MacBook runs PSDR FB but this new one doesn't seen up to >> the task. >> >> 73, Sheldon VE1GPY >> >> >> From: Sheldon Hartling <ve1...@rac.ca> >> Date: Friday, 8 June, 2012 11:40 AM >> To: <FlexRadio@flex-radio.biz> >> Subject: [Flexradio] Touch-Screen All-in-One computer for Flex-3000 >> >> I¹d like to purchase a Touch-Screen All-in-One computer to use with my >> FLEX-3000. Any suggestions from the group? >> >> >> There aren't many with Firewire interfaces anymore. It looks like the Sony >> Vaio might be the best bet. However they use nVidia graphics processors and >> this often leads to DPC latency problems. I've run DPC Latency Checker on a >> number of Sony All-in-One's in the stores and they don't fair well (avg >> 1000+ with 3000+ peaks). The one exception, so far, is a model VPCL237FDB >> which runs under 250 microsecond latency. (VPCL237FDB might be a Canadian >> part number). It has a 2.2Ghz i7-2670QM processor and GT-540M nVidia GPU. >> Anyone have experience with this PC? >> >> >> >> 73, Sheldon VE1GPY >> >> >> >> _______________________________________________ >> FlexRadio Systems Mailing List >> FlexRadio@flex-radio.biz >> http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz >> Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ >> Knowledge Base: http://kc.flexradio.com/ Homepage: >> http://www.flexradio.com/ >> >> >> >> _______________________________________________ >> FlexRadio Systems Mailing List >> FlexRadio@flex-radio.biz >> http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz >> Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ >> Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/ > > > > _______________________________________________ > FlexRadio Systems Mailing List > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/ > _______________________________________________ > FlexRadio Systems Mailing List > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/ _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/
