--- "James A. Reible" <[EMAIL PROTECTED]> wrote: > Well, I opened it up and sitting on the left side is > a strange > looking ..... something....... which I'll try to > describe. > Sitting at a shallow angle is a card that says: > DayStar Digital Powercache.
It uh, should be standing straight up. > This thing, which will fit in a regular NUBUS slot, Did you actually plug it into a NuBus slot? If so, you probably bent some pins. Hopefully didn't break any off. > is mounted to a > (daughterboard?) that mounts to the main board via > two square (1.25" > square) sockets (on the daughterboard) to the same > size and shape > collections of pins on the motherboard. > This thing says: DayStar Digital II Adapter. The Daystar PowerCache is a board with a 68030 CPU and an optional 68882 FPU. The Mac II adaptor plugs into the CPU and PMMU sockets. (Or is the CPU and FPU sockets? My PowerCache manual is like 75 miles away right now.) Anyway, in its current condition your Mac II won't do squat without the PowerCache and the adaptor board in working order. Check for bent pins. If you find any CAREFULLY straighten them. Break one off and there goes the party. Plug the adaptor into the two empty sockets and the PowerCache into the socket on the adaptor. It will only fit one way. It will plug in easily. Pop in a video card, connect monitor, keyboard, mouse and see if it will power up! Hmm, I wonder if you need the Power Central control panel for the PowerCache in a Mac II? You have to "lobotomize" it so it has to at least use the PowerCache CPU no matter what. Probably needs it for the PowerMath switch to enable the FPU on the PowerCache. Are all the chips soldered to the PowerCache or are one or two in sockets? Is there an empty socket or not? What does the silver color, rectangular, metal "can" have printed on it? The PowerCache came in 25, 33, 40 and 50Mhz versions, any of which is a big upgrade for the Mac II. The PowerCache also has 23K of cache RAM on it. If you install IIx ROMs in your II then you can use SIMMS bigger than 1 meg each in Bank A. It still takes special SIMMs for certain sizes. Another upgrade for the Mac II was replacing the IWM chip with a SWIM chip. That allows it to use a 1.44M SuperDrive instead of being limited to the 800K floppy drive. Then it can also use PC formatted floppy disks. But first see if you can get it running! Then you can figure out if it's had the ROM and SWIM upgrade. :) ===== http://www.junkscience.com "All the Junk that's fit to Debunk!" __________________________________________________ Do You Yahoo!? HotJobs - Search Thousands of New Jobs http://www.hotjobs.com -- Vintage Macs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Enter To Win A | -- Canon PowerShot Digital Cameras start at $299 | Free iBook! | Support Low End Mac <http://lowendmac.com/lists/support.html> Vintage Macs list info: <http://lowendmac.com/lists/vintagemacs.shtml> The FAQ: <http://macfaq.org/> 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]> Archive: <http://www.mail-archive.com/vintage.macs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
