Arek's TF534 build
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- arkadiusz.makarenko
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Re: Arek's TF534 build
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
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
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Re: Arek's TF534 build
agreed.. those CPLDs can take a pounding. They've got hardcore protection diodes on them for the 5V tolerance.Naah, those cplds die hard:)
———
"It is not necessarily a supply voltage at no load, but the amount of current it can provide when touched that
indicates how much hurting you shall receive."
"It is not necessarily a supply voltage at no load, but the amount of current it can provide when touched that
indicates how much hurting you shall receive."
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Re: Arek's TF534 build
Nothing yet, as I am waiting for regulator and relocator.
I should be able to tell anything more at the end of this week.
Do not trust people. They are capable of greatness.
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~ Stanislaw Lem
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Re: Arek's TF534 build
I was sure ive sent You board with relocator? Not sure anymore.. Maybe ive mixed up, there was several persons from this Forum...
Retro computer hardware & repair in Germany
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Re: Arek's TF534 build
Yes you have, but I forgot to order connectors for it. So just ordered built one.8 Bit Dreams wrote: ↑Mon Sep 09, 2019 7:50 pm I was sure ive sent You board with relocator? Not sure anymore.. Maybe ive mixed up, there was several persons from this Forum...
This one will wait till TF536 build for my second Amiga.
Do not trust people. They are capable of greatness.
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Re: Arek's TF534 build
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
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
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
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
Do not trust people. They are capable of greatness.
~ Stanislaw Lem
~ Stanislaw Lem
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Re: Arek's TF534 build
Nope, it's not CPU.
If You see fails - it is ram, so could be ram or big cpld..
If You see fails - it is ram, so could be ram or big cpld..
Retro computer hardware & repair in Germany
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Re: Arek's TF534 build
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
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
Do not trust people. They are capable of greatness.
~ Stanislaw Lem
~ Stanislaw Lem
- arkadiusz.makarenko
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Re: Arek's TF534 build
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.
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.
Do not trust people. They are capable of greatness.
~ Stanislaw Lem
~ Stanislaw Lem