Do you have any idea how I'd find out where the ADB controller is.  The mouse works better but sometimes it doesn't work at all.  I'll let it sit overnight again but that's not a g…

I think you may be right.  [it's worth noting I had removed and replaced (i.e. reseated) everything way prior to this so if there's a connectivity issue it's deeper or more latent.…

Yes, the "autostart" ROM came later as one of the features of the Apple II Plus. The original Rev 0 Apple IIs just booted to a screen filled with garbage text, you had to push the…

i bet you and woz would have a good ol time!

I found the answer to my own question. Yes, installing the Disk II card would map 256 bytes of ROM on the card into the computer's address space at $C600. At that point, there were…

Check the HD and trackpad ribbon, connector and reseat all.  You need to reseat both cables quite firmly and ensure the latch goes down properly.  The trackpad is just an ADB devic…

For documentation purposes, the issue with the disk icon not popping u,p when the screen and cursor would, was located in a CMOS chip. Now I'm having problems with the HD port an…

Still does not read the trackpad

Lol. Disregard. No disk at all with CD module, flashing disk with HD, it booted from floppy [wrong OS, hence message]. At some point it stopped displaying the flashing QM. I let…

Your point is very valid.  I lack patience, and it is a problem, particularly in an electronics-related respect.  In this case, I let the board sit overnight after a brief second w…

I admire you getting in elbows deep into fixing your Macs, but you just seem to be jumping the gun a little too early and doing all the things I'd consider a "last resort" first an…

The dishwasher seems to have killed my board. SadMike.

If this is an LVDS display ( dont know if it is or not), the gamma correction IC on the t-con likely failed. 

You sure it's not an OS install quirk? Or the GPU not being able to drive the OS?

Wish I had an answer to this but unfortunately not the case... just going to follow and hope something comes to the surface. Ive had a similar issue with a Dell CRT I was given. Ev…

Actually preemptive follow-up: I don't understand Apple's manual advice - how can you boot without extensions with no disk-icon [i.e. without an actual boot process] - same with th…

I've gotten the pointer to pop up.  Neither trackpad will move the pointer, but an ADB mouse will [ADB port - check], and the trackpads will move the pointer with the ADB mouse plu…

And this is VGA output. Unsurprisingly, the HD thing did not work.

If the 5300c has the same basic boot sequence (which I'm using to mean everything up to and including booting) then this seems to not be the case.  I'm going to install anyway and …

Well the thrust of that link has to do with some obscure [or he's wrong because this make little sense to me] issue with a dead HD preventing any booting and the flashing disk.  Th…

Link you've posted to refers to resetting the SMC (system management controller), which is analogous with Intel Macs - kind of like resetting the PRAM/CUDA on pre-Intel Macs.  Not …

I know this is a totally different ROM, and I know nothing about Macbooks so I don't even know if this info is correct, but there's no way, right... ?  https://www.ifixit.com/Answe…

Also the HD spins before the screen powers on.  I get no impression the floppy module does anything - but that may just mean it's not getting to a disk check - which should probabl…

The same cable used on the Mac II to 13 inch color, LC to 12 inch color or b/w is the same cable for the IIgs. Make sure its the thick cable with all 15 pins on the heads. The thin…

Thank you. I'll check it out. I mostly use it on android but I have it on OS X. I'LL PM you. I have some broader NewtonOS questions.