Arek's TF534 build

[arkadiusz.makarenko]

YEY.

I removed and soldered small cpld and I did find the chain and managed to program both cpld.

Board was powered from RPi 3.3V, but this means that at least CPLDs at least partially work :)

Arek

[8 Bit Dreams]

What does DiagROM say? :geek:

[terriblefire]

Naah, those cplds die hard:)

agreed.. those CPLDs can take a pounding. They've got hardcore protection diodes on them for the 5V tolerance.

[arkadiusz.makarenko]

What does DiagROM say? :geek:

Nothing yet, as I am waiting for regulator and relocator.
I should be able to tell anything more at the end of this week.

[8 Bit Dreams]

I was sure ive sent You board with relocator? Not sure anymore.. Maybe ive mixed up, there was several persons from this Forum... :lol: :oops:

[arkadiusz.makarenko]

I was sure ive sent You board with relocator? Not sure anymore.. Maybe ive mixed up, there was several persons from this Forum... :lol: :oops:

Yes you have, but I forgot to order connectors for it. So just ordered built one.
This one will wait till TF536 build ;) for my second Amiga.

[arkadiusz.makarenko]

OK

Got my stuff.

And Diagrom starts to execute, because I can see some stuff on serial output.

Unfortunately it is garbage, as some letters from output are simply missed.
It does some stuff later, and I can see a lof of FAILS :D

But small steps forward will get there.

Any advice maybe which cpld I should focus on ? bus?

Another question is if this could be CPU related. I have 33mhz but 40mhz crystal?

Arek

[8 Bit Dreams]

Nope, it's not CPU.
If You see fails - it is ram, so could be ram or big cpld..

[arkadiusz.makarenko]

Hi

Thank you for advice.
I have taken out RAM from the board, and I damaged bigger CPLD during check by pressing to hard on one of the legs. Oh well I knew that soldering this will be difficult, but it is much more difficult than expected!

Arek

[arkadiusz.makarenko]

Ok. I give up on this board. I have lifted one pad.
I ordered new cplds and PCB and better flux. :)

It is great experience with smd and using hot air station. My goal with first board was too be able to run Diagrom, and I almost got there. :) With next one I hope I will start computer.