Recent content by SuperSVGA

They were originally intended to be battery backed SRAM, though they later could have supported flash.

This is just in the Snow emulator at the moment. You could likely fake it on real hardware if you have between 5.5-9MB of RAM, but you would need to fake some of the hardware. You would need to pull high bit 3 of 0xFC0200 and bit 3 of 0xF00000 and/or 0xF00030, and likely make sure other bits...

They do work just fine since the entire driver is in ROM: Getting it in the Powerbook 100 would be tricky, since you need both access to the bus as well as the signals from the CPU GLU, at least to implement it the way Apple intended. As I understand the SLIM cards got delayed because they...

Just in an emulator. I think I got the RAM disk working in it now, looks like there's just a few registers for controlling the address lines on the RAM.

Yeah 8 modules, I tried both 1MB and 4MB modules in the RAM disk slots, as well as none at all, the behavior is always the same. I would open the control panel if the mouse worked. I think the EEPROMs are version 1.2.1, I can't remember if I updated them. I also accidentally discovered that if...

I checked what vias I could see and the solder mask seemed to be doing its job at least, though I haven't looked under the copper itself so who knows what's under there. I'm pretty sure this is what I'm supposed to see when starting up the system: The odd thing is it appears this screen is...

I do see IR activity from the isopoint, though whether it's sending the right data I'm not sure. It doesn't work connecting it with the cable either. I tried getting a Microsoft bus mouse, but besides the connector not physically fitting the bus mouse is a 9 pin connector and the connector on...

It's the isopoint. None of the switches seem to do anything at all. I haven't been able to find a compatible external mouse yet. Mine is also missing the cover and the white part that holds the roller, not that it would prevent it from working. Hold a magnet in the area below the expansion...

I would if my mouse worked 🥲 At this point I can't tell if it's just the mouse itself not working or if there's a problem with the computer. I think when I was trying to run things with just the keyboard alone it would freeze up when opening apps. It also doesn't prompt to initialize the RAM...

Your display seems to look quite a bit better than mine, though maybe it just depends on what's on screen.

No modifications other than converting to the right connector. I unfortunately have no idea whether it can work with emulated 800k disks, for some reason the mouse doesn't work on mine so I can't do much interaction with it to even try. It seems like it could be made to work since Flashfloppy...

The Gotek/Flashfloppy emulators work fine at least for 1.4MB disks, I have one running on mine since my physical floppy drive doesn't seem to work.

What test info are you looking for? I can provide info for most of them.

The value probably would have been preset or set by the test ROMs they used at the factories. This interface was primarily designed for factory burn-in testing rather than troubleshooting, so if it couldn't get that far there was a bigger issue.

You are getting accesses in RAM locations that are also being mapped to backlight control by the CPU GLU, since they used the SLIM card CS lines for the backlight addresses. If you hit the programmer's button/NMI button on the side of the computer to bring up the debugger, you can type in DM...