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zezba9000

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  1. zezba9000

    Apple III Floppy Emu

    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.
  2. zezba9000

    Apple III Floppy Emu

    Interesting but the solution I've adapted from FloppyEmu IIc converter is much simpler and works at the hardware level.
  3. zezba9000

    Apple III Floppy Emu

    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.
  4. So found out the adapter works fine in Apple IIe but not Apple II+
  5. Because Apple II controllers are super expensive and Atari controllers are made new to this day for super cheap.
  6. So I just got one of these: https://console5.com/store/byteboosters-sega-atari-snes-joystick-adapter-to-apple-ii-e-c-c-iigs.html I've tested with two different Atari Joysticks with Mario Bros on Apple II+ and the jump button is always pressed (DPad / Joystick works fine). Using an old Apple II joystick has no issues. Anyone else have this issue or know how to get these converters working with Atari controllers correctly?
  7. zezba9000

    Apple II+ pure white screen?

    You also keep track of how many people had these go bad while using original PSU? The Apple ][+ I got had a bad PSU making a clicking sound with voltages not good. Now that I replaced it with a custom PICO based one my guess is there will be less issues down the line. I have original PSUs for Apple IIe & III and if the there are parts on the legacy PSUs that are the root of the problem I wan't to replace those at some point. All these PSUs have a mechanical part that makes some noise that to me feels like could be a possible longer term issue for these computers.
  8. zezba9000

    Apple II+ pure white screen?

    Besides the bad ram the bad logic chip was: SN74LS153 to the right of the last upper row of ram as you can see in the picture.
  9. zezba9000

    Apple II+ pure white screen?

    You're right I had 3 bad ram chips. Guess I tested wrong last time. Now its 100% stable and working! Ran it for an hour with no issues. I also added some heat-sinks on chips that got hot. Hopefully it keeps them from overheating and lasting longer. Also modified my FloppyEmu cable so I can easily attach "DISK ][" drive cables
  10. zezba9000

    Apple II+ pure white screen?

    So I'm having a problem still after adding a disk-drive interface card. It stops reading drive and spits garbage data similar to @bibilit issue he shared here. FYI: Frogger I loaded above was done via tape input. Many times loading from tapes will have the same/similar issue. What I do: * Power on computer with drive and Mario Bros disk mounted with FloppyEmu * Computer beeps * Computer beeps AGAIN but spits out junk similar to @bibilit issue he shared. * Drive stops being read and game never loads What I've tested: * Drive works perfect in known fully working Apple II+ motherboard and Apple IIe computer. * I tested ever single chip with known good ones from Apple II+ motherboard. RAM etc is all good. * The 74LS283 was not the issue as I hoped like bibilit had. * If I turn on the computer with no disk mounted THEN mount a disk it SOMETIMES will load BUT text is messed up in some apps I'm currently deep cleaning the motherboard to see if anything changed. I'll take a picture of what it displays after its cleaned but if anyone has any ideas what could cause this when all chips are confirmed working.
  11. zezba9000

    Apple III Floppy Emu

    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
  12. zezba9000

    Apple III Floppy Emu

    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
  13. zezba9000

    Apple II+ pure white screen?

    Also any suggestion for a JoyStick interface card? Got frogger running from .wav / tape. Everything working good so far.
  14. zezba9000

    Apple II+ pure white screen?

    Anyone know if China is the only place to buy these: https://www.ebay.com/itm/Floppy-Disc-Drive-Emulator-with-Disk-ii-interface-for-Apple-ii-iie-iic-Laser128/143672823651 Who designed these? Where is the official store? I need to get a SD disk drive card.
  15. zezba9000

    Apple II+ pure white screen?

    This is what my custom PSU looks like inside
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