Recent content by DominBear

I kind of like the trackpad. Well round 2. My Amazon 68040 purchase from China has arrived. Soldered the CPU, it booted couple times. Ran Tattletech and Speedometer. Neither reported FPU present. Then after Speedometer benchmark wchich returned the same results as before, the machine froze and...

And the lesson is pb 5300 and 190 touchpads are not interchangeable

Lessons of today. 1. somehow my trackpad stopped working. tried another one and still nothing. 2. replaced PMIC with another one desoldered from another PB190 board, one was SC428002 the other SC428006. Learned they are no direct replacements. The trackpad still didnt work but with replacement...

Ah crap. It looks like V is 3.3V part. So I probably fried it a bit ;-) I guess I need to find 5V part and try again.

I tried these CPUs https://www.ebay.com/itm/226944137012

Can it be done? I tried installing MC68040FE33V but no chime. CPU gets warm so it does something? Soldered LC back, works again. Does the ROM care about it? They are pin compatible and the only difference should be FPU?

Does anyone know if the FW sources for the adapter are published anywhere? I am thinking about adapting it to fit inside display and drive some lcd or maybe epaper because my display goes black after little bit of use. I'd rather start with a working FW instead of reinventing everything.

I had two horizontal black lines in the middle of the screen. I decided to reflow the pins on both middle horizontal driver chips and, one of the lines has moved. So, I desoldered both of them, cleaned everything up nicely and soldered with new solder. Great success. Also, I have discovered...