mlindroth Beginner

I just came across this hack that allows you to clear Root's password. Neat!
Siemens PC-X - GeekDot
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I also installed the C compiler and ran a simple "Hello World!" program


And the output after running.

It's been a lot of work, but I have some big updates.

Shortly after my last post, I ordered five (minimum order) MFM Emulator PCBs to be made for me by JLCPCB in China. They did a great job, and they look awesome. I spent a little extra money to get them…

If you want the harddisk to start working reliably again you may watch this video:

Adrian's Digital Basement ][ - Let's try to revive some MFM hard drives!

It's not necassary to build a clean room box. MFM Drives are not that sensitive to dust. Just don't…

I had no emufiles posted for PC-MX2 until now.

(Quote from fritzeflink)

Yeah, I didn't plan on doing anything besides browse the hard disk, but I won't be able to use if at the moment anyways. I think it was a fluke, random chance. My PCB's I had made for the MFM Emulator (the same one you are using),…

(Quote from fritzeflink)

Yeah, I realized that after I had powered off the system. And the heads are sticking again. I'm going to have to open this drive. I'm planning on making a little clean room box with gloves attached to the front.

Update: subsequent boots of the system don't have the heads moving reliably. I think it might be the sticky rubber bumpers. And the error messages were because the hard drive stopped working.

And I think that I might have read the password wrong before, I…

I have some awesome news. Over the past week I have been poking around in the system monitor to try to learn how to use it. I have been encountering some weird issues that cause the system to crash/hang while running commands. So I have figured I have…

Ich kann beim Aufbau und der Reinigung helfen.

(Quote from mlindroth)

So please send them to me and I check the program and copy the images onto the other floppys.
If I need more floppy disks I'll take some of mine.

(Quote from fritzeflink)

They are blank except for a chess program, that may or may not be for my computer.

(Quote from fritzeflink)

I unfortunately didn't get any floppy disks, that's one reason I'm really interested in having a floppy emulator. So that I can load images from the internet.

(Quote from Peter z80.eu)

I checked the power cables and both of the cables going to the hard drive are getting 5.118V & 12.76V.

(Quote from fritzeflink)

Definitely spinning, and after a while it ramps down a little bit then up to normal. Everything sounds healthy. Could this be caused by a memory problem like what I posted about above?
(Quote from mlindroth)

(Quote from Peter z80.eu)

I pulled it out when I first opened the computer up. All cables are reseated, I hear the click when it first starts spinning. I will probe voltage levels tonight.

I've also been trying to learn how to use the monitor, and I'm unable to use the "d" command to display memory area.
So "d0 100" freezes the computer.

Memory test works when I run away from the beginning. "d2 ffff 100"
but "d2 0 100" freezes after two…

Thanks to fritzeflink helping me get a cable I'm now able to power on the system. I had my spirits up when all the fans spun up, even the hard-drive and floppy were making healthy sounds. The hard drive spins, but I get a repeating message on the screen…

(Quote from fritzeflink)

I believe I have the photos you are looking for at the top post of this thread.

Wow, this is cool. While Googling I found the original listing where my machine was sold to the previous owner. The guy before me parceled it out and sold the items individually for profit. Which I'm ok with, it's his side-gig, and he got to it before…