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Re: Arek's TF534 build
Posted: 09 Sep 2019 16:36
by 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
Re: Arek's TF534 build
Posted: 09 Sep 2019 18:56
by 8 Bit Dreams
What does DiagROM say? :geek:
Re: Arek's TF534 build
Posted: 09 Sep 2019 18:59
by 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.
Re: Arek's TF534 build
Posted: 09 Sep 2019 19:43
by arkadiusz.makarenko
8 Bit Dreams wrote: 09 Sep 2019 18:56
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.
Re: Arek's TF534 build
Posted: 09 Sep 2019 19:50
by 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:
Re: Arek's TF534 build
Posted: 09 Sep 2019 20:06
by arkadiusz.makarenko
8 Bit Dreams wrote: 09 Sep 2019 19:50
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.
Re: Arek's TF534 build
Posted: 11 Sep 2019 13:38
by 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
Re: Arek's TF534 build
Posted: 11 Sep 2019 19:07
by 8 Bit Dreams
Nope, it's not CPU.
If You see fails - it is ram, so could be ram or big cpld..
Re: Arek's TF534 build
Posted: 11 Sep 2019 23:35
by 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
Re: Arek's TF534 build
Posted: 13 Sep 2019 17:23
by 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.