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The 0000000F / 0000000A error.

The California Pen Show will be held in the South Bay on the same weekend, if your retro tendencies lean towards stationery: https://www.capenshow.com/

JDW, congratulations to your daughter! I'm not sure if I'll be able to make it, despite it being really close to me. I might pop in on Sunday, but my kids want to go to the pen show that is on the same weekend. Hope everyone has fun and there's an In-n-Out at the mall now if you're hankering for...

Hello! I'm encountering the same sad mac error (with nothing connected, just power). Aside from randomly replacing chips, what are ways to narrow down what on the board is causing this?

An update no one asked for :D On the replacement, new to me, SE board, everything works, and I even got the MacEffects SE CPU accelerator working today after building a HD image with 7.1 installed. I have tried migrating the ROMs from the working SE board to my reloaded board and get a Sad Mac...

I like it. I do have my RGB monitor, but it’s nice not having to put more hours of use on it. It always starts up in the GUI mode a bit off but hitting a button fixes that up.

Did the keyboard work correctly with the //e board? Maybe swap the board back into the old case and check it again?

I like it. It works well enough to make the IIgs achieve its proper 14 MHz glory. The "OG" model is what @niek made before one of the components were no longer in stock. He's redesigned the board to not rely on that component and that is what will be available going forward. The new ones will...

My IIgs currently has: * Applesqueezer GS (the OG model) * Uthernet 2 I use Marinetti for getting online. * Byteboosters Darksound (for stereo sound output) * Booti USB hard drive emulator (sadly no longer available) * Soldered connections for an RGBtoHDMI I also have a FloppyEmu, which is my...

Update: I used the Pay to Win tactic and got a working SE FDHD board off of eBay. What a working board confirmed for me that was that my Reloaded board mostly works, except for the ROMs. At this point, I have a number of PLCC EPROMs and SE ROM boards, so it's another weekend of soldering to...

These are screenshots from Mr Lurch's Things video on hooking up an RGBtoHDMI to an Apple IIgs, where he clearly shows and labels what pins from the RGBtoHDMI will need to be soldered to on the IIgs motherboard. While this is documented on the RGBtoHDMI Github wiki, these screenshots provide a...

Christophe Lambert has a video up on youtube showing how much faster the ramdisk can be loading Appleworks GS:

@niek , creator of the Applesqueezer Apple IIgs accelerator has blogged that he has done a redesign of the hardware that will be coming out soon. One of the interesting updates in the hardware design is an SD slot that would supports saving and loading a RAM disk. Also: The latest v7 core...

I finally got time to double check this on the board, and sadly (well, from a troubleshooting POV), the chips in question are in the correct orientation on the board. Note that the checkerboard is progress, in at least it's a different state of dead from before. The change, as noted above, was...

Ok, another update. I got some new (to me) SIMMs off of eBay and they arrived this past week, and installing the sticks did change the behavior. Based on this thread over at 68kmla, it looks like the analog board needs another look. I had recapped it, but there might be more to inspect.

I'm at @[email protected]

Just tried wiggling the harness between the 2 boards and the pattern doesn't change at all. I did reflow the usual suspect on the analog board where the cable to the logic board connects to. I'll try messing with the RAM sticks I have, but the contacts on them seem a bit worn. Thanks for the help!

Following the advice of the folks on the discord, I've remade the ROMs, but I'm still pretty much where I was as of the last update: If anyone has any pointers, I'd really appreciate what to look at next.

Another update: I remade the Low ROM and tried it out, but no dice No chime at all, as well. I'm hoping this is a pretty easy thing to diagnose.

I was curious about the revision history and Wikipedia has a decent summary: https://en.wikipedia.org/wiki/Apple_IIGS#Revision_history This made me laugh, though: Another thing about the //e upgrade kit (granted the whole section is flagged as "original research":