Apple II

I have an Apple II GS, ROM 1, with the original motherboard and RAM. I've tried booting GS OS via Floppy EMU and System 6.0.1 via the Apple2Online Store floppy, and each time I get the error message "RAM disk too large or not enough memory. Error = $0201."

The computer used to boot using the original hard drive with System 6 (though I could be mistaken which OS was installed), so I would think there's enough RAM to boot using Floppy EMU or an actual boot floppy. I'm reluctant to use the original hard drive until I'm ready to back it up, since it is 40 years old at this point.

I have an Apple ][+ with what I believe is the Autostart ROM Language Card.  When I try to boot ProDOS 2.4.2 date 18-JAN-18, it reports "REQUIRES 64K."  I know ProDOS places itself into the Language Card space.  Does ProDOS recognize this card as memory?  I tried to write to all of the memory locations $C080 to $C08F and I could not crash the computer while in the monitor, which I do not know if it's a good test.

Thanks,

Dan

Hi All,

I have an Apple II power supply with an early serial number that i'm looking to refurbish.. I know ReactiveMicro sells repair services ($90)..

1) Is it worth it?

2) Is this something I could generally do myself with a soldering iron and multimeter?

Based on the feedback I got, I had an idea to derive an interface that can plug an Arduino Shield or an Arduino Uno into the Apple II bus using a 82C55 peripheral interface chip.  By soldering stackable headers into the Apple II card, an Arduino Uno can be plugged into the back of the card, and shields can be plugged into the front of the card.  There are resistors between the 82C55 and the Arduino pins to protect the Apple II and allow the transactions to be inputs or outputs.  You can find the card at

http://www.github.com/profdc9/Apple2Shield