Edgar wrote: >well i get a old ppc PowerTower 166 a PowerComputing model 64mb RAM >Procesor 604e 200MHz >CDROM speed unkown zip drive and floppy drive ,PCI bus( 3 in total ) , >vga and mac video output ( i dont the name of the big connector ) >after i get a HD of a old Quadra of 1Gb and ADB Keyboard and mouse , so >inside of the computer i can read writer in the board "power curve" ( i >dont what it mean , i thinks a model or something ) so my question and >problem are:
The PowerTower is derived from the earlier PowerCurve series, which in turn was derived from the Mac 7200 series 'Catalyst' motherboard. The Mac 7200 series was deliberately hobbled by Apple with a soldered CPU to prevent it competing with the upscale 7500 series desktop of the day. Power Computing company re-engineered the Catalyst board to use a 'daughtercard' CPU, and did amazing things with it. It's normal to find 'PowerCurve' or 'PowerCenter Plus' motherboards in the PowerCenter, PowerTower and PowerCenterPro cases, as they are all essentially the same, although the PowerCenterPro layout was slightly different to allow for an improved video subset which was mounted on the PCI riser card mounted in a motherboard slot. >#1 what video card have that model ? Video was supplied by a chipset on the motherboard, likely manufactured by ATI Technologies. It had 2 meg of video ram soldered to the motherboard, and could be upgraded to 4 meg by adding 3 - 1mB video ram modules into the slots provided (yes, that equals 5, but only 4 were recognized) >#2 what is the bus speed of the RAM ( 168pins ) ? The PowerTower bus is capable of running at 60 mHz, the fastest bus available before the Beige G3's(66 mHz bus) were introduced. The ram will run at the speed of the CPU, and the CPU speed sets the bus speed. The stock PowerTower CPU's were 166 (55 mHz bus), 180 (60 mHz bus) and 200 (57 mHz bus speed). The PowerTower can use any CPU designed by PowerComputing or 3rd party manufacturers (NewerTech eg), but not CPU's designed by Apple due the lack of a 'drty' line (this was because Apple only used removable CPU's on the 7500, 8500, 9500 'Nitro' or 'Tsunami' motherboards, which can be identified by having 8 ram slots vs. the PowerTowers 4 ram slots. ># 3 i can use a standart RAM of the pc ? Use 5v FPU type 168 pin dimms. You can mix and match, as the PowerTower can't 'interleave' ram. It should be able to recognize up to (4 x 128mB) 512 mB of RAM. The PowerTower came with a 512 mB Cache simm, and benefits slightly from using 1 mB cache simm, common in the leter PowerCenterPros and PowerTowerPros. >Problem : i try use a copy of MacOs 9.2.2 and 8.5 and dont boot >use the C key , the bypasses way using 'option+cmd+shift+del' and >changing the startup disk and dont work either . PowerComputing used 3rd party CDRom drives which require a 3rd party utility such as 'CDRom Toolkit' which was included on the CD originally shipped with the PowerTower. The simplest workarounds for this problem is to install any SCSI CDRom from an Apple computer (look for an Apple decal ), as these have the ROM subset necessary for recognition by the Mac OS. (Yet another fine example of Apple's misguided efforts to force owners into Apple repair shops) The upside of this method is that the later the CDRom drive, the faster it is. CDRom technology had no real standard until around the time that 12x CDRoms were readily available, and it should be possible to pick one up free or verry cheap. The same thing goes for Hard drives. PowerComputing used 3rd party drives which required 'HD Toolkit' to be recognized by the system. Again, and SCSI HD from al older Apple will work on the PowerTower, and be recognized by later versions of the Mac OS up to 9.2.1, the latest OS which should be used on the PowerTower, for several reasons. >that model of ppc cant boot a cd copy ? Those without an Apple ROMed CDRom (other than if using Mac OS 7.6.1), or unless booted from the original PowerComputing install CD's, which had CDRom toolkit built into the CD boot system. -- Power Computing is sponsored by <http://lowendmac.com/> and... 123Inkjets.com <http://lowendmac.com/ad/123inkjets.html> Support Low End Mac <http://lowendmac.com/lists/support.html> Power Computing list info: <http://lowendmac.com/power/list.html> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> List archive: <http://www.mail-archive.com/powercomputing%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
