I got one of the converters from Walmart overpriced but it works. However computer doesn't fully startup until I hit reset button, then power cycle once. Its a Performa 6115CD.
So looking again, there was one on Ebay for 30$ I just ordered today. So now I can confirm if the 3rd party converter...
Yes the same ram was used between both boards. It must be something with the board itself.
The fact that the bad board functions but just the scan lines are jumbled makes me think its some IC chip (maybe a bad cap causing it?) that could be effecting vertical sync line timings.
So I was given this Mac Plus that came with two motherboards. One fully working and the other boots and works but the image on the screen is waky.
As you can see in the image, I get a flashing disk that blinks with a cursor etc. I know this isn't a screen issue as I can test it with the working...
I have a "Macintosh Performa 6115CD" and need to get a video cable for it that converts HDI45 to a VGA or DB15.
But man the original ones are crazy spendy. I found this oddly on Walmart online store...
Hey I just fixed a Color Classic.
However like LC computers these don't have external floppy ports.
Whats the best way to transfer files between modern macOS, Windows or Linux to a 68k mac over Ethernet?
Is there any software that can simulate AppleTalk over ethernet on Win/Mac/Lin? Or any FTP...
Looking it up, the only thing LC III+ doesn't support is some L2 cache card maybe (that LC III does). And the mod effects this the same way.
So unless you use that card doesn't sound like their is any issue. (I'm still considering if I want to do the mod or not)
But the LC 475 / Performa 475 don't have a integrated FPU right? (as you can't add one).
Also why did Apple limit the clock to 25mhz when it ran fine at 33mhz?
I'll have to consider if I want to do this or not. Looks like an easy change but sometimes I prefer devices more true to their original...
Its faster than I expected. Only ever used an LC & LC II in the past for these.
Do you know if the FPU helps in games in general that use "floats"? Or does a game need to be compile specifically to use it?
What game did you use that required it btw?
Well it turns out the HD was going bad and its head getting stuck. Trying to take it apart to adjust it, I bent a head (its toast).
So put in a SCSI2SD and just put on OS 7.5.5 directly and everything works!
* Computer re-capped
* Added heatsinks on hot chips
* Add FPU !!
* SCSI2SD drive (still...