RGBtoHDMI.
One of these with the TTL board can handle CGA/EGA/MDA(Hercules) to HDMI.
That way you can play with more video cards/modes/computers without having to buy more adapters.
That card doesn't have any ram, it uses the IIe's Ram.
There were a lot of clones.
https://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Interface%20Cards/Z80%20Cards/
Including a brand new one that's much faster that's available to buy now.
I used a rom splitter that ran under a st emulator, I just booted it, then used the splitter on the 104us.img and selected 6 roms.
I actually used 6 27c512s and doubled up the rom per chip.
I'm sending you a PM
XP introduced SLP activation, which most ODM (Original Device Manufacturer) used to activate. It was a copy of xp with oembios.* files that were customized for the oem bios strings.
Very easy to crack/exploit. I ended up using SLP on my white box systems for years, using the intel bios tools...
I make and sell wifi modems, and everything is on my github, and the documentation has taken me as long as actually designing some of the boards.
And it's not that long of documentation, it's just not my strong point to write it.
If I wasn't selling the boards, I don't think I would have...
Yep, we quit carrying them at my work around 20 years ago and they handed me like 20 tubes of them.
I've used them for tons of arcade board repairs, Commodores, Atari 2600 DIY carts, etc.. Really handy to have around, and you can't beat free.
I used 6 27c512's in my 520st to upgrade to 1.04.. Pin 1 in gnd so it uses the upper part of the roms.
(I've still got a few tubes of these left over from the ancient days.)
And as for that ram upgrade... Is your board that exact one??
If not, it might not fit.
There's a different 4mb board...
Ok, I checked on my u2 and I have 333 ohms or so..
You don't have a dead short.
The switch switches +5 and half of the 9v ac.
Gnd is unswitched.
Now the power switches the middle pins to the ones close to the switch itself or the outer 2.
The outer 2 are hot when the computer are turned off...
I'd double check the actual power switch to begin with.
Also, what is the resistance in ohms that you are reading between +5 and gnd on say ic U2 (4022 near the joystick ports). Pin 14 is +5 and pin 7 is GND.
I just looked in my parts stash... I've got a full set from upgrading a coco2, but I'd just upgrade to 64k instead of fixing the 16k if it's bad.
64k coco 2 and a cocosdc is a great combo. (After a composite video mod).