zezba9000 Posted August 22 Report Share Posted August 22 So was reading people got the official Floppy Emu working on Apple III with a converter cable. However I see Chinese Floppy Emu devices that expanded on Floppy Emu and work in Apple II computers. My question is doesn't anyone know if the card interface is the same on Apple III and Apple II for disk drives? Wonder if this would work on Apple III: https://www.ebay.com/itm/Floppy-Disc-Drive-Emulator-with-Disk-ii-interface-for-Apple-ii-iie-iic-Laser128/143672823651 Quote Link to post Share on other sites
bibilit Posted August 22 Report Share Posted August 22 The floppy disk is basically the same on both units. Only the analog board is different between the Apple II and III. Don’t know if can help. Quote Link to post Share on other sites
waynestewart Posted August 23 Report Share Posted August 23 This may help https://www.applefritter.com/content/and-floppy-disk-replacement Quote Link to post Share on other sites
zezba9000 Posted August 27 Author Report Share Posted August 27 So I made a cable based on this: https://www.bigmessowires.com/2017/01/25/floppy-emu-on-the-apple-iii/#comment-236297 Would be nice if someone would test this on Apple III+. It works on internal and external drives BUT sadly you can't boot from external drive on Apple III so I want to see if there is a way to make an Apple IIc like adapter for Apple III. So the "Steve Chamberlin" the FloppyEmu dev says the Apple IIc adapter re-routes the enable signal from the internal to the external disk and vice-versa. So maybe its possible to do the same thing with Apple III. I can only find the pin-layout for Apple II but not Apple III: https://www.apple.asimov.net/documentation/hardware/misc/Apple II Disk Pinout.txt Anyone know where I can find similar pin-layout for Apple III? Here are pictures of the cable working allowing FloppyEmu to run on Apple III Quote Link to post Share on other sites
zezba9000 Posted September 16 Author Report Share Posted September 16 Made it so I can boot from external floppy port. Getting parts to finish it with a switch etc but it works great. Same concept as the FloppyEmu IIc adapter that swaps the drive-enable lines. Quote Link to post Share on other sites
NJRoadfan Posted September 16 Report Share Posted September 16 This might be of interest: https://github.com/robjustice/soshdboot Quote Link to post Share on other sites
zezba9000 Posted September 19 Author Report Share Posted September 19 On 9/16/2020 at 8:46 AM, NJRoadfan said: This might be of interest: https://github.com/robjustice/soshdboot Interesting but the solution I've adapted from FloppyEmu IIc converter is much simpler and works at the hardware level. Quote Link to post Share on other sites
zezba9000 Posted September 19 Author Report Share Posted September 19 Finished my Internal to External converter complete with two-way switch just like IIc had. I can now boot from external port with FloppyEmu or flip a switch and boot from internal. Here is the switch that changes from internal to external drives. Or I can disconnect converter box and just use system like normal by connecting these two wires (drive enable leads). Also added cooling fan as I read these computers had overheating issues. Also added heatsinks on chips that got super hot on the motherboard. Quote Link to post Share on other sites
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