touch@grad2.cis.upenn.edu (Joseph D. Touch) (12/20/90)
Instead of buying the $50 32K memory chip from Radio Shack, here's info on what to buy to do it yourself. Note that you'll have to open the case and install the chip on your own EITHER WAY!! The chip is equivalent to the 32K x 8 low-power CMOS static RAM, part: I used the Samsung, but there are dozens of equivalents: KM 62256 ALP-10 In the IC MASTER (1990) it is listed as: Samsung 32K x 8 CMOS static RAM low power, 100 ns, 5v, tristate outputs *ANY* equivalent part will suffice. It can be purchased for $7-$11 from our local chip supply dealer. The chip goes in the lower 28 pins of the 32-pin socket. I am not sure if larger chips (64K x8, 128K x8) will also work. Make sure you have the chip seated properly, and the usual CMOS static protection warnings apply. After it's installed, you'll have to hard-reset (pinhole on the bottom of the case), turn the protect switch off for this, by the way. Then you have to go to file mode, go to the RAMchip, and "format" it. Just the same as if you bought it- it's in the manual, somewhere (or the addendum to the manual that came in the shrink wrap!). Joe