Apple II

Apple IIc drive woes. Bad IWM?

Submitted by kpcnsk on July 23, 2023 - 2:29pm

I'm having issues with my IIc drives. It reads from all the drives without issue, but not write to the internal, extrenal, or Floppy Emu in either location. Based on some forum sleuthing and my own investigations, I suspect that the issue is with the IWM. I'd love to have a second opinion on that diagnosis.

 

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Apple II

Apple Monitor II Strange Picture effect

Submitted by Fenix+ on July 21, 2023 - 12:08pm

Hi,

I have a picture problem on my Apple Monitor II (A2M2010) at near the top of screen. (Please see the attachment) I try to repair it by changed all Electrolyte capacitors, but they were not help. I need the suggestion what the components should have defective.

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Apple II

Help on Apple2 boot up

Submitted by kinderapple on July 20, 2023 - 12:47pm

Hi, first time post here and excited to learn of this community. I picked up a Appleii+ last weekend from an guy who cleans out rental houses/estates.

I grew up using one as my dad sold them at computerland in 80's.

Anyways got it to start up, chirp and display the "APPLE II" on monitor, but nothing else, when I try CONTROL-RESET to go into Basic, nothing happens..

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Apple II

Apple /// products...

Submitted by softwarejanitor on July 16, 2023 - 6:09pm

I just recently received by Titan /// + //e and Z80 SoftCard clones from Joe's Computer Museum for my Apple ///.  I have been following the threads about using a Dan ][ card for SD storage as well as FloppyEmu on the Apple /// and I've built the cable converters to facilitate that.

 

Seems like a new renissance for the Apple ///.  With these boards it can run most Apple II software even things that need a //e and a lot of CP/M software.  It really changes the whole world for using an Apple ///...

 

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Apple II

Micro-SCI / Franklin Floppy Disk Controller clone

Submitted by cryu on July 16, 2023 - 1:12am

I finally got around to completely reverse-engineering a spare Micro-SCI floppy disk controller, and have managed to duplicate it.  It has been running in my ACE1000 all morning, and appears to be working correctly.

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Apple II

Need some assistance on repairing some Disk II drives

Submitted by strelock on July 12, 2023 - 2:32am

I have 4 Disk II drives, but only one of them is working. I am convinced that one of the 4 is a clone, as it has a different analog board with no Apple part number on it and has asian characters on a label on the bottom. I am attempting to get at least one other working drive as I intend to sell one of my Apple II systems and want it to come with at least one good drive.

 

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Apple II

Mythical drive sizes?

Submitted by Wayne on July 7, 2023 - 12:53pm

I’ve seen Applied Engineering Vulcan drives in 20, 40, 60,80, & 100mb sizes

They also advertised 200mb drives but I’ve never seen any evidence that they existed though I’d love to see one

Applied Ingenuity Innerdrives were advertised at 20, 30, 40, 50, and 100mb. I’ve only seen 20 & 40mb drives. Likely 30 & 50mb exist but I wonder if 100mb actually did or if that was just advertising.

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Apple II

Apple II Rev.3: HGR not working

Submitted by Rajaz on July 5, 2023 - 6:17pm

Hi all,

Long time reader but first time poster. I'm troubleshooting my Rev.3 (7850). After isolating Ram problems and swapping 1 or 2 LS, it now does boot and start disk II.

The main default comes from HGR command, which doesn't clear the screen (Hires1), so I suspected the $2000-$3FFF RAM area, but corresponding chips are tested good. After issuing HGR command,  the screen doesn't blank and shows partial white blocks. Otherwise, HGR2 works: Hires2 is cleared. Text (1&2) and GR work well.

Any hint appreciated ! Thanks.

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Apple II

Apple IIc 5.25" Floppy (ALPS) repair

Submitted by IT_Luke on July 4, 2023 - 5:22am

Hi all, I posted this on the discord channel but Tom suggested to post it also here for reference so here it is (I added some pics for reference). I was having trouble with my IIc floppy, more specifically when writings as reading was working fine (I hadn't used it in a while). When attempting to save anything I would get random write protect or IO Error. Sometimes it would hint on starting to save (creating the file name for ex.) but shortly after give IO Error or simply a Write protect. So it was time to investigate.

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