tf534 asking for debugging suggestions

[apacz]

Thanks a lot for all suggestions, i will update you with my findings. I have diag rom so, after checking again for soldering issues, and math coprocessor i will go with diag rom.

[apacz]

hello again

I've check clock signal (on jumper) and there was nothing, I've replaced generator chip, and now I can see beautiful 50Mhz (I was expecting square wave, no sinusoidal), but board still doesn't work.

IMG_7501.JPG

I've tried without FPU, no luck again.
I've put diag rom. To confirm that my amiga is not destroyed by board I've put my 68010 procesor, and diag rom boot flawlessly. however with tf534 put there is nothing, even on the serial port.
I'm starting to think that 68030 is faulty. I've bought it from some polish company and it suppose to be tested.
What do you think?
Can any of you share his mc68030 source?

[terriblefire]

Highly unlikely the CPU is dead. what does DiagROM do?

[apacz]

Completely nothing, on screen only indivision logo, and nothing not even single character on serial.(as mentioned in previous post with 68010 cpu i can see output of diag rom both on screen and serial)
The only difference is that with normal rom, indivision logo disappears after few sec. but with diag rom stays all the time on screen.

[terriblefire]

Have you tried this in the 68000 socket? Do you have a 7Mhz signal at the header?

The reasons you see a sinusoid is because at 50Mhz you’d need a 200Mhz scope to a see clean edges

[apacz]

Yes. I've tried that as well, but not with DiagRom (will test today) 7mhz at header will check in the evening

I thought it's 200Mhz scope, but it seems that its 200megasample/second, and bandwidth is 50Mhz ;-)

[terriblefire]

In that case you likely have a soldering issue.