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Home Forums 68kMLA Bad ram in a Macintosh SE? — #12
Post #12 by phreakout
Source Forum68kMLA
CategorySoftware
Post DateFri, 16 Sep 2011 - 08:35
Original URLhttps://68kmla.org/bb/threads/bad-ram-in-a-macintosh-se.23871/
Post
Ah, Phreakout, that's System 7 stuff. It doesn't work way back in System 6. In System 6 we had to get acquainted with a little thing called the Desk Accessory something or other. Desk Accessory Utility?
It stuck things directly into the System Suitcase. It was actually a little bit like an early version of Packages...
Oops. Yeah, I guess you're right. My bad. But I do recall that unlike System 7, SSW 6 stores all the system extension files loosely inside the System Folder, unless you use the Font/DA Mover tool to properly add it to the System. Technically the extensions still work the same way as you would by installing via Font/DA Mover, the only difference is that the loose stored extensions use less steps to disable the extension (move the file out of the folder, then restart your Mac vs. using F/DA M to uninstall, then move the file then restart). Also, the suggestions do in fact work if you have installed Extensions Manager v1.8 (freeware from Apple) under SSW 6.0.8.

Okay, looking at the photo, it's saying that 4 MB of RAM has been allocated to the System, but the System and the Finder are using less than 512 kilobytes worth of that allocated space. So somewhere along the line that space in RAM needs to be released, in order for other apps to run and use that empty space. Can he do a Get Info of the Finder file and adjust the preferred memory size? Maybe even de-bloat the system of certain fonts and unnecessary items (desk accessories)?

The finder looks normal, actually.
There's a resistor on the logic board, and whether it's clipped or not tells the computer how much RAM there is; it doesn't detect it by itself. So it could be that you have less RAM than you think.

Somewhere on here there's a great PDF file with opening instructions and a walk-through of all the systems written by Tom Lee. But if nobody links to that before I get back on, later on when I have more time I'll get back on here and tell you what to do.

-Apostrophe
This resistor he talks about is for telling the SE what type of RAM SIMMs you're using. Early on, you used to get RAM in less than 1 MB capacities; yes, 256 K and 512 K size sticks did/do exist. The resistor was soldered in place to indicate that you had 256 K SIMMs installed. When you went to upgrade your SE to more than 1 MB of total RAM, the bench technician had to install the new sticks (512 K or 1 MB size) and then cut one side of the resistor and bend it up a bit, so that the SE would report back the correct amount. So, for example, you bought the SE with the stock 1 MB installed and later want to upgrade to say 2 MB. So the tech would swap out all 4 of the 256 K sticks for 4 512 K sticks to make it 2 MB. The tech then cut one resistor, causing the SE to report back the 2 MB.

73s de Phreakout. :rambo:

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