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SIG X68000 / x68030 internal scsi cable: Adapters?
« Last post by Spitko on Today at 06:09:33 AM »
A cursory scan of the internet didn't turn up anything.

It looks like the 030s use a 2.0mm pitch IDC50 header. Does anyone sell an adapter for these? I'm guessing no, but figured I'd check before I start exploring more painful routes.
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SIG X68000 / Re: X68000 XVI - Refusing to boot after turning off - Weird noises
« Last post by Spitko on June 24, 2018, 05:40:03 PM »
Autopsy time.

You need to open that sucker up, and take some pictures for our amusement! ;D

Really though, sounds like your PSU has catastrophically failed. Did Sharp make 240v power supplys in some markets, or is this some kind of aftermarket job? If the latter, I can't really tell you much more without knowing what you have and how it's made.

With any luck, the damage may be localized to the power supply itself, and the rest of the 68k might be fine; however DO NOT UNDER ANY CIRCUMSTANCE PLUG IT BACK IN OR REPLACE THE FUSE. All you'll do is increase the odds it takes something expensive and hard to replace out with it.
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SIG X68000 / Re: Hardware dev: USB -> KB+Mouse+Joystick adapter
« Last post by Spitko on June 24, 2018, 03:55:34 PM »
Hardware development in a nutshell



Only took four mod wires ::)

Edit: If any particularly adventurous persons want to build one of these to test and maybe help debug the software, let me know. I can whip up a quick v2.1 with the corrected pinouts and upload gerbers. It'll be up to you to source the parts though. allpcb will cut you a set of boards for about $20 shipped to the states.
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SIG X68000 / X68000 XVI - Refusing to boot after turning off - Weird noises
« Last post by PadPoet on June 24, 2018, 01:01:21 PM »
Hi everyone,

I've been a lurker for like forever but decided to join the forums since I am facing problems with my X68000 XVI machine.

The PSU on this machine was replaced with a 240V one. I was testing the machine loading a bunch of games from an external SCSI to SD hard drive and everything was going great.

Suddenly when I turned off the machine, after 30-40 seconds I heard a loud bang. Checked to see if anything had fallen to the floor but was curious to see if any fuse was blown and yup, the X68000 XVI was not booting.

I replaced the 3A fuse in the power cord and when I switched the on button on the back I heard again a loud bang/sound like plastic cracking from inside the machine.

I'm a bit scared of changing fuses again, don't really know what to do. Should I open it up? Does these tutorial videos for disassembly apply to the X68000 XVI as well?

https://www.youtube.com/watch?v=LuYx58ZqxgQ
https://www.youtube.com/watch?v=N4SkiebPoZ8
https://www.youtube.com/watch?v=G8D9aJab8fY
https://www.youtube.com/watch?v=MXJhbHWx6hM

Thank you all
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SIG X68000 / Re: Hardware dev: USB -> KB+Mouse+Joystick adapter
« Last post by Spitko on June 24, 2018, 10:44:06 AM »
rev 2 arrived and soldered.

Bugs so far:
  • TX and RX are swapped on the keyboard connector. I should have pulled the pinout from Outside x68000 and not some random google image search result... Need to cut/bodge this, but a temporary patch shows the keyboard appears to work as expected through the level shifters.
  • Joystick port sees full ghosting across high/low bits, dpad doesn't seem to work. I suspect PC4 is either wired wrong, or bridge somewhere.
  • I somehow forgot to add the USB host connector to my digikey order? Guess I'll keep using the dorky 5 pin breakout cable :'(

It doesn't look like there's anything here I can't bodge into submission, so I should be able to focus on software and the USB hub microcircuit soon.

I also noticed the USB hub I ordered off amazon hangs the processor as soon as I connect something to it... it might be due to the hub being bus powered and the inrush current pulling vin too low... or just a software bug.
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X68000 Software / Re: Exceed for X68000
« Last post by amigo-mexicano on June 23, 2018, 09:30:37 AM »
Anyone...?
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BST / WTB Sharp X68000 Compact XVI
« Last post by swisstoni on June 21, 2018, 08:42:51 AM »
Im looking to buy a Sharp X68000 Compact XVI if anyone has one for sale please send me a PM.
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SIG X68000 / Re: issues and questions with the GKA-AT68 ps/2 adpater
« Last post by Jehuty on June 20, 2018, 11:46:47 PM »
I use the same adapter and been searching for the underline "_" key?
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SIG X68000 / Re: issues and questions with the GKA-AT68 ps/2 adpater
« Last post by srtomiz on June 20, 2018, 09:37:27 PM »
Yes, that's must be the key, now I know it's mapped to the "\" on the ps/2 keyboard, another one for the list  ;D

Still haven't found the yen symbol-\ key, I've found that LHES and some commands takes the "/" as a path separator, so that's a semi working workaround for me.

Thanks for your answer.
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SIG X68000 / Re: X68000 Original Model - Caps? Leaks? Psu? Oscillator? Half working model!(FIXED)
« Last post by mnht2 on June 20, 2018, 06:35:17 PM »
I had an X68000 original model that worked back in 2010. When I tried to boot it up 1 month ago, I only got a black screen.

I was quite desperate until I found this thread. I checked my system, found a leaking battery and followed the guide (replacing some diodes and the 69Mhz oscillator).
Yesterday I finished, started the X68k and it booted fine again.

Thank you all for this great thread!
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