QUADRA 650 MAC VGA ADAPTER UPGRADE
That would upgrade your machine to 44MB from the current 4MB. Which means the RAM I have will be available. Since RAM isn't very expensive in the 72-pin variety, I may be upgrading mine to 128MB, for a total of 136MB. I currently have two 16s and two 4s in my machine. If you go with the stock style caddy loader, has a bezel that'll work. Current machine has a 4x tray loader that came out of a AppleCD 600e case that was missing its power supply, so I have no need for the caddy. I also have an extra caddy that I used with my previous Centris 650. If you need the mounting rails, I have a spare pair that I don't need.
QUADRA 650 MAC VGA ADAPTER PLUS
It'll be big enough to hold the OS install, plus whatever applications and other files you save to it.įor a CD-ROM drive, either grab the one that Nick is offering you, or another Apple-branded CD-ROM drive (that way the "C" key booting trick works).
That said, it might be easier to just get a 1GB Quantum Fireball (or similar) drive and mount it to a IIvx/650/7100 hard drive sled. If the latter, partition it into two 2GB volumes so System 7 or MacOS 8 is happy. I also wouldn't be surprised if the eject motor gear is stripped.ĭrive-wise, I'd probably do a 2GB or a 4GB SD card with either the RaSCSI, BlueSCSI, or SCSI2SD adapters. Luckily the Wombat motherboards (the ones found in the Centris/Quadra 650 and Quadra 800 machines) typically have tantallum capacitors preinstalled, so recapping will likely be unnecessary.įloppy drive will likely need a cleaning and a relube job, and probably adjustment of the zero track sensor to get it to read/write to a disk. Converting my 650's board into a Quadra 650 board, with the slightly faster 33 MHz chip. I do have the regular 68040 I pulled out of mine. Since your board is the base version without the AAUI port for ethernet, you have a 68LC040 chip running at 25 MHz. System 7.6 works well on these machines, if you don't need to run applications that require 24-bit addressing. is there any place outside of eBay to look for the SCSI tray and drive, and/or a SCSI CD-ROM? The other is near the 72 pin RAM slots, and is slightly offset from the 4 RAM slots. One is inline with the outside NuBus slot, and is in front of it (towards the front cover) and looks like a card edge connector. There are two unkown to me slots in the machine. Getting System 7.5 impose limitations on volume size, where System 8.1 will not? Or should I just try to get a tray and a rotating SCSI drive? Seems like the costs for either option are pretty close.ģ. Can I make use of all 16-64GB of storage, and is there any disk size limitation imposed by the version of the various Systems? in other words, will The idea for this machine is to verify that the motherboard is OK, then get a SCSI2SD adapter with a 16-64GB uSD card. Is there a preferred diagnostics disk, or OS version? i haven't powered up the machine yet, as I don't have an ADB keyboard, and from what I remember, I need an ADB keyboard with a power button to start the machine.Ģ. Without a HD, what is the easiest way to verify that the motherboard is OK? I think I should try to find a bootable floppy, preferrably with some diagnostics on it, or get an OS disk set (which I will eventually need, anyway). Now the questions (because my last 68K Mac was a IIVX, and I have forgotten a lot of stuff):ġ. This was necessary in order to remove the PRAM battery, which remarkably showed no evidence of leakage, but I also think it was replaced at sometime, as it green and white, brand is SAFT, and it says 3.6V and Lithium on it, along with Made in France. i opened it up, and after a little bit of effort, was able to remove the inner metal work and power supply to get access to the motherboard. There is a NuBus ethernet card in the middle slot. The machine has 4MB RAM soldered in, a floppy drive, and hard disk and hard disk tray, as well as the CD ROM are not present. From the outside, the plastic front and rear plastic covers have yellowed considerably (closer to orange, actually). Machine appears to be a 1993 unit, and it is said to chime when powered up. I just received a Centris 650 from a local surplus place that I actually found on eBay.
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