Recent content by Russianv

Well, yeah look like the socket contacts are not great, I found 4 ram SIMMs in one of my other Macs that actually worked! I know all there Simm s are good because I have tested them in other Macs. I decided to push the Simm socket contacts out a little bit, try to force them to make better...

Latest on this, more traces fixed, on board ROM works now, still normal chime followed by CoD after checking RAM, black screen. Will really appreciate some advice on what to check next, all address lines and data lines from ROM seem to be ok now.

Well, after fixing 3 more traces, I managed to get it to chime, followed by CoD, but only if using a custom ROM SIMM, the original ROM still shows the same display pattern no matter what. I'm pretty sure the CoD is happening after the RAM test, if I use the custom no RAM check ROM, it gives the...

Hi, I recently got a IIci with battery damage, it didn't look that bad compared to others I have seen online, so decided to try and get it working. I have put wires to fix like 4 obvious broken traces in the battery area, replaced the CPU because the old one had 6 broken legs, and removed a...

Good news, bad news type of situation here now. I managed to decode the Matrix and make the changes, tested it without the accelerator and... SUCCESS!! it booted fast, no memory check. Then I installed the accelerator back, the good news is it boots, the bad news it is still doing the memory...

Well, I have to say this is more complicated than I thought, I can't figure out how to make that small simple change to the rom. I tried following this guide: https://www.bigmessowires.com/2016/06/10/rom-hacking-tutorial-with-rom-inator-ii/ but I'm getting lost in the hex rom file TBH. Will a...

Right that looks good, and yes, it all works fine when using the onboard ROM and card. I have never edited a ROM, I just found the guide on another page, I'll try and report back. Thanks a lot for the replies @Bolle , I know you're a busy guy.

The only reason is to skip the ultra long time it takes to boot with 80mb of ram, other than that, nothing else

Hi all, I bought a Rominator II, which works just fine on my IIci. Now I bought an Interware 68040-33 accelerator and sadly it’s not playing ball with the ROM, it won’t start. I was wondering if by any chance there is a version of the ROM that may help in cases like this? In any case, any...

ok, thanks

Right, I’ll have a look at the schematic then. Thanks again

Highly likely. Out of curiosity, how do you test that switch that gets stuck?

Well, out of nowhere, after the video got fixed, I plugged the internal speaker back in and... sound on start up!!! I have never ever been happier about hearing that sweet bong hahaha. Thanks for the reply and advice!

Oh well, I found the issue with the video now! Turns out a traces broken between UE8 and UC6, something I didn't test before, I feel so happy about myself now hahaha. Now only thing left is the sound issue, will appreciate a lot if anyone has any ideas about what may be causing that issue, no...

Also, I just checked all the traces (relevant to video signal) from the memory chips UC 6 and 7, to the correspondent Ux8 chips, all seem to be ok. Sadly I don't have scope to test the signal from UC6-7 out of the video pins, not sure if there is a way to check it with a regular multimeter? So...