Apple II

Does someone here in the group has the SVA (Sorrento Valley Associates) ZVX4 disk controller card for 8" disk drives?  If so, I am hoping to get the firmware code off of the card.   This would be the code present at $cX00-cXff (X being the slot it's located in) as well as the switched-in card expansion ROM area at $c800-$cffe. 

I have found that the slot extenders for the Apple 2 have been out of stock for some time now.

So I designed a PCB with Kicad and had 5 cards made by PCBWAY .

All worked well but the card edge to fit the slot was a little to short at each end and whilst it was electrically sound did not sit well with me as a finished product.

So a second version has been run up in Kicad and hopefully the card edge to slot will now be a snug fit.

Whilst I do not intend to sell any of these slot extenders, I will make the Kicad files avaiable on GitHub if any one is interested?

Hello all, 

I have added a menu loader to the SmartDisk II (stm32 floppy emulator), and it is working great, 

 I would like to detect an Apple II soft reset on the Smartdisk II and my approach would be to count the step motor phase reinit, but it is a bit dirty, 

Is there a better way to detect a soft reset on the Disk II interface ?

Thanks 

Vincent 

Hi,

I'm just getting started trying to restore an Apple IIe. I replaced the powersupply with one from ReactiveMicro, and when I turned it on I got a sickly sweet smell which I'm guessing means something blew on the motherboard.I haven't done any multimeter or oscilliscope testing but this component looks blown so I'll try to get a replacement before starting troubleshooting further. Can anyone provide an ID? TIA!