Macintosh IIcxLow End Mac Reader Specials
Honey, I shrunk the IIx. The Mac IIcx was essentially a IIx stripped of three NuBus slots and given a smaller power supply. All this created a computer considerably more compact than the earlier Mac IIs. These Iicx was a big improvement over the larger Mac IIs for memory upgrade: you need only remove the cover to access the SIMM sockets. When upgrading, be careful not to damage the SIMM sockets, especially if you are removing memory. Although the IIcx shipped with 1 MB of memory, odds are pretty good it's already been upgraded beyond that point. Looking at the motherboard with the connectors to the rear and power supply in the right rear, you will see eight SIMM sockets. The four on the right are Bank A. The four on the left are Bank B. Memory must be installed in sets of four 30-pin SIMMs rated at 120ns or faster. A 1 MB configuration has four 256 KB SIMMs in Bank A; a 2 MB configuration has 256 KB SIMMs in all eight sockets. For a 4 MB or 5 MB configuration, place four 1 MB SIMMs in Bank A. Leave Bank B empty for 4 MB; install four 256 KB SIMMs for 5 MB. The 8 MB setup requires 1 MB SIMMs in all eight sockets. For 16-32 MB configurations, place four 4 MB SIMMs in Bank A. Leaving Bank B empty produces 16 MB total. Adding 256 KB SIMMs bumps this to 17 MB. Using 1 MB or 4 MB SIMMs in Bank B produces 20 MB and 32 MB, respectively.
After installing memory and reconnecting your drives, boot your Mac with extensions off (hold down the shift key) and check "About This Macintosh" under the Apple menu. If it doesn't give the expected number, you should reseat your memory. Once you know the upgrade is a success, pop on the lid and enjoy the extra memory. I suggest you increase the size of the disk cache for better performance. <go to memory upgrade index or Macintosh IIcx> Low End Mac is an independent publication and has not been authorized, sponsored, or otherwise approved by Apple Inc. Entire Low End Mac website copyright ©1997-2012 by Cobweb Publishing, Inc. unless otherwise noted. All rights reserved. Apple, the Apple logo, Macintosh, iPad iPhone, iMac, iPod, MacBook, MagSafe, Mac Pro, Apple TV, and AirPort are registered trademarks of Apple Inc. Additional company and product names may be trademarks or registered trademarks and are hereby acknowledged.Advice is presented in good faith, but what works for one may not work for all. Please report errors to . LINKS: We allow and encourage links to any public page as long as the linked page does not appear within a frame that prevents bookmarking it. Email may be published at our discretion unless marked "not for publication"; email addresses will not be published without permission, and we will encrypt them in hopes of avoiding spammers. Letters may be edited for length, context, and to match house style. PRIVACY: We don't collect personal information unless you explicitly provide it. For more details, see our Terms of Use. |
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