Apple II

Hi Everyone,

Using Apple II software diagnostic tools to test a Disk II floppy drive. Interestingly trying to calibrate the disk speed the unit is returning 0 RPM (but you can hear the drive actively seeking and the red light on front of drive is illuminated). I was hoping someone might be able to point me in the correct direction of what part of the circuit is responsible for calculating drive speed.

Thanks all!

Hi All,

Got an Apple IIe which is giving various issues - history of the machine is unknown, but apart from being dirty there appears to be no physical damage to the PCB or keyboard.

Issues are:

1. Refuses to boot to the on-board diagnostics - this was working and giving a SYSTEM OK message, but now ignores the Apple keys being pressed on power up

2. With a Super Serial card installed in slot 2 and typing IN#2, CTRL-A will sometimes give the 'Apple SSC:' prompt, sometimes not returning the ] prompt

Hi All!

I've come across this forum a couple of times and everyone here has been very helpful getting me up and running on my ][+.  The machine works, and I have been able to use the casette ports to get some disks and games.  That was a good time, so I decided to order a Super Serial Card and see if I can get that working with ADTPro.  I'm having an issue where everything that comes across on the serial port is showing up as a bunch of carats, at symbols, and slashes (^^/@@@@) etc. 

Hello, I just got my IIc working and tried using ADTPro to copy some games to floppy disks. When I try to format a 5.25" disk with ADTPro I get an error message that reads "Unrecognized error = 2D". I'm using a two sided, double density disk. Does anyone here have any idea what this error means, or what could be wrong? Thanks!