{"id":1687,"date":"2012-09-23T19:09:21","date_gmt":"2012-09-23T17:09:21","guid":{"rendered":"http:\/\/museo.freaknet.org\/?p=1687"},"modified":"2025-08-29T15:41:14","modified_gmt":"2025-08-29T13:41:14","slug":"restauro-apple-c-in-corso","status":"publish","type":"post","link":"https:\/\/museo.freaknet.org\/en\/restauro-apple-c-in-corso\/","title":{"rendered":"Restoration of Apple ][c"},"content":{"rendered":"

This Apple \/\/c came from the squat “Centro Sociale Ask191” in Palermo; it was fitted in a pile of old electronic equipments, forming a sort of cyberpunk sculpture; it was donated to us during the Hackmeeting 2008 by the squat fellows \ud83d\ude42<\/p>\n

Cleaning it was a real mess, using water and industrial liquid soap. We collected a lot of… tobacco coming out from the keyboard!<\/p>\n

Turning it on, it showed a garbled screen; we tested all socketed ROM reading them, finding the keymap ROM blank.<\/p>\n

During the debugging, a tester probe accidentally shorted two pin in the power supply side; after that, all RAM were burned and become very hot! So we had to change every of them.<\/p>\n

After that, the system reacted very well; we just discovered another faulty RAM.<\/p>\n

The last work was to create the keymap ROM; we red an identical one from another Apple \/\/c (brought by Alessandro, red as a 2716). Our programmer can’t write 2716, so we duplicated his content and wrote a 2732 instead, that fit perfectly!<\/p>\n

Now the system is back to work! \ud83d\ude42<\/p>\n

NOTE: The system mount 128K of RAM but use normally the first 64K. So, a video glitch as you can see in the pictures (those 2 characters in the middle of the screen) has to be found in the first RAM bank. If they are socketed, just swap the chips to test this.<\/p>\n

The ROM images of our Italian Apple \/\/c and some manuals \/ info can be downloaded from this link:<\/p>\n

http:\/\/museo.freaknet.org\/files\/apple-2c\/<\/a><\/p>\n

Other useful info, ROM images etc. about this and other APPLE computers can be found here:\u00a0http:\/\/mirrors.apple2.org.za\/<\/a>\u00a0(Thank you, speedyG from\u00a0http:\/\/www.applefritter.com<\/a>\u00a0\ud83d\ude09<\/p>\n

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