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I know why the drive worked as configured. Some idiot, instead of breaking the shunt, they cut the legs off. I pulled the shunt insert and it had all but leg 1 and 3 cut on one side and 1 on other side is the one sticking out. So they went about it the wrong way since looking at it gave no...

I'm attaching a pic of the battery. In it you can the corrosion was limited to the board under the battery and the 2 FBs. I was told those were ferrite beads and not to push anything under them as they can easily break. That they wouldn't have a negative effect if removed as they are only...

I would do a careful inspection of the capacitors on the drive motor board. I have had two where the caps leaked and had no idea until the drive started acting up. Spinning problems and then no spin at all. I have a thread there, somewhere, with pics. Even if the caps aren't leaking, they...

Okay, need to trace from header to pins 93 and 94 on the chip.

Yeah, lighting is making some traces seem like the coating is gone or wearing, but it's like that over the entire board. There were a couple traces that were kind of black and crusty, but when I cleaned them off, they still looked that way and tested good. There is still some corrosion under...

On a system with a PS/2 mouse, but just an AT Keyboard, is the mouse alone on a controller? Also, what is that controller? I have an odd mouse issue and had to switch to a serial mouse. When I boot the system with a PS/2 mouse connected, all is well until I start using the mouse. It will...

I remember Lotus 123, before version 3.0, had the stupid SuperLock copy protection. Can't count the number of times I had to fix a messed up install. Company wouldn't allow us to using anything to remove the copy protection.

I have quite a few 25 pin header to DB25 cables packed away. Never know when you'll need one.

I can do that. I think I will jumper it like the other one and remove the shunt block. Would an 8 pin dip plug right in? I figure the socket has to be compatible with a switch bank designed to be soldered.

Okay, so I'm thinking that if I populate U14, 15 and 17 I should be able to use the parallel port.

Okay, so the AST board I have seems to have had the second serial port chip installed, but I can't figure out if this thing has the parallel port installed. I see so many empty sockets, but the only ones I can figure out are the ones that enable Apple Joysticks. I am attaching a pic of the...

That's the thing. I can't think of a use, but that doesn't mean there isn't one. If it's only function is copy protection bypassing, then I don't. I just don't know all the functions it might have.

I know how it is installed, what I was asking is if I really need to keep it installed if there is no use for it anymore. I can free up a slot if there is no practical use for it.

Does this board still have a use nowadays? If so, what can be done with it? Can it fix my MS-DOS Activision disks that won't install anymore because I didn't uninstall? First time, HD died. Second time, I forgot to uninstall all of them before reformatting. So I have 3 games that won't...

It worked like a charm. The M4 formatted disk worked perfectly and I was able to copy files to it. Now I need to make a TRSDOS disk as gbasic doesn't run with LSDOS.

That did it! I can now read the disk I formatted in the Model 4. I'm going to move some files to it and see if the M4 can read it. Thanks!

Okay, my floppy drives are DS0 is a 1.44 and DS1 is a 1.2. I have floppies in both and I set them up as shown in the first attached pic. When I try to access them, I get what is shown in the second attached pic. Either it is not working as intended, or I'm just missing something and need to...

Didn't think about the index. Bummer.

I have that and I loaded it. Still won't access drive. I tested the FDC with the tester that came with IMD. I don't know if this valid for the emulator usage.

That's exactly what I did. However, when I tried to access a drive higher than 1, it returned an invalid drive error. I made sure to use the correct one for a B: drive that is 1.2MB. So drive 2 showed FHD1_360.DSK being used, but I could not access it as a drive.