Apple II

Apple IIc screws

Hi!

I'm missing some screws of my IIc case and I haven't been able to find them or the specification for them. I would greatly appreciate if someone could point me to where can I buy them or find another complete case (with the screws)

Best regards.

 

 

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Best way to open an Apple IIC - just drop it!

Another public service announcement.  I've been refurbishing a lot of Apple IIc's lately and they all have a lot of screwdriver/tool marks around the case where people were poking and prodding and levering (and therefore damaging) their case to open up their Apple IIc cases.  iFixIt page is wrong, don't listen to them.  Stop it people!  There's an easier, tool-free way to instantly pop open your Apple IIc case:

Open the handle, lift up the back of the unit 6", and drop it.

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PSA - A2S4000 Apple IIc can still have the good Alps keys

Public Service Announcement.  I have two different A2S4000's in my possession that both have the amber Alps keys.  This isn't explicitly mentioned in some of the wiki's around the web but it is discussed in some of the forum threads around the web.  Posting yet again for anyone who wasn't in the know.  You might be able to pluck an A2S4000 for cheaper than an A2S4100 but still get those sweet alps, if that's what you're searching for.

A2S4000 early models - hairpin switches

A2S4000 later models - amber alps 

A2S4100 - amber alps

A2S4500 (Apple IIc+) - orange alps

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There's a bug in Fields!

Hi!  I have a cc65 UI library called Fields.  It provides a way to perform data entry and has menu support.  It has versions for some CBM targets and the Apple2enh.  You can find it at https://sourceforge.net/projects/cc65extra/files/ui/.  It doesn't handle my memory enhancements but should work in systems containing these.  Unfortunately, it doesn't, and I can't figure out why.  I'm asking for help with these.

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LZW technique: What's wrong w/ my code?

First of all, I'd like to thank all of you here for your help.  Now, I'm working on many compression techniques, including one that uses the LZW technique.  Now, my rendition of LZW is doing very poorly.  I attached two code snippets responsible for LZW.  The code was written in cc65 C.

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Era Authentic Platinum //e config

I'm planning a Platinum //e system renovation and just curious about a "typical Plainum //e".    How would you describe a typical system? My gut says this is more of a school system than business system. I have extensive experience with orginal Apple ][ with Integer ROMS,  ][ Plus, Franklin Ace , Laser 128 and other clones,  and early and late beige //e machines, but I was not around many Platinum //e machines in their era.

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Potentiometer thermo plastic "grommet" repair

Ok, so you're me.  You google scratchy Apple IIC potentiometer and you end up at this page:  http://www.apple2faq.com/apple2faq/apple-iic-volume-knobpotentiometer-repair/  ou desolder your audio pot from the motherboard.  Of course, tThe potentiometer in the picture is nothing like yours, and the instructions don't make any sense.  You proceed happily cut away at the plastic grommet holding the inner wheel anyway.  The inner wheel slips out.  You DeOxit F5 your wheel to death and scrub it with a toothbrush.  You're confident that your metal bits and pieces are as good as brand new and now y

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Cheap DIY retrobrite setup - no gels

Tools:

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ISO Gerber files for Ralle Palaveev's ProDOS 512K NVRAM drive

In search of gerber files for this project, before I take the time to make them from the provided schematics. I don't do Facebook so I don't know if anyone has shared around a kicad/gerber file or anything.

 

The project is: https://github.com/rallepalaveev/Prodos-512kB-NVRAM-Drive

 

This would be really useful for me, I'm not out to make a bunch of them but a couple for personal use would be super useful. I already have all the ICs on hand I would think, so a few unpopulated PCBs is really all I need.

 

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Plugged CGA monitor into IIe joystick port

Hello everyone,

 

I fear that I may have killed my apple IIe by plugging an IBM 5151 cga monitor into the game/joystick port. It no longer beeps, and the power led stays on. No video output. As to how this happened, I have an Apple IIe with a PC Transporter card from Applied Engineering. I plugged the monitor into the wrong port.

I've taken all of my expansion cards out, and measured resistance on all of the voltage rails to ground. The 12v rail had very low resistance (6.5 ohms), but raised to over 800 when I unpluged the keyboard. 

 

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