exxos's Atari, Amiga & retro forum

8 Bit Dreams wrote: 26 Mar 2019 05:12 Yes, no Zorrolll RAM under KS 1.3 - that's normal.
Wich A500 Revision do You have rev.3 & rev.5 need to be modded to be able accept 512kb kickstarts

Rev 6A, so that shouldn’t be a problem. It’s modded for 1 MB chipmem though, with 512k onboard and 512 in the trapdooor.

I’ll put the 534 in my 500+ later to check if I get the same issue.

no, im talking about Kickstart roms, early motherboard revisions can't work with 512kb rom chips without modification. Since You have 6A - it should work with ks 3.1 & 3.1.4 just fine

8 Bit Dreams wrote: 26 Mar 2019 06:30 no, im talking about Kickstart roms, early motherboard revisions can't work with 512kb rom chips without modification. Since You have 6A - it should work with ks 3.1 & 3.1.4 just fine

I know you were talking about the roms, but I just mentioned the chipram mods just in case that would be a problem (didn’t think it would be, but still).

Any Diagrom tests I missed?

Could it be a bridge on the RAM CPLD? It’s responsible for the IDE as well, right? And the IDE is untested still as I haven’t got my headers yet. Will get them today or tomorrow.

As KS1.3 doesn’t support it and 31/3.1.4 does, something sketchy on the IDE could probably cause some problems.

kludge wrote: 22 Mar 2019 21:44

Morning Kludge, or good afternoon for you I guess.. :D Did you ever get your 530 running? I've run into a disconnect getting 534's so I was thinking of building the 530's. I just wanted to check if you were able to get your 530 running or did you abandon the effort? Thanks Paul...

Emm..i think Pin1 mark of the ide is on the wrong side, try to twist the ide ribbon

8 Bit Dreams wrote: 26 Mar 2019 14:22 Emm..i think Pin1 mark of the ide is on the wrong side, try to twist the ide ribbon

I don’t have the headers yet, so the IDE is totally untested. Will get a couple (100) of headers this week.

PaulJ wrote: 26 Mar 2019 14:15 Morning Kludge, or good afternoon for you I guess.. :D Did you ever get your 530 running? I've run into a disconnect getting 534's so I was thinking of building the 530's. I just wanted to check if you were able to get your 530 running or did you abandon the effort? Thanks Paul...

Good afternoon, indeed!

The TF530 is not working yet, but not abandoned. I’m getting a new soldering station tomorrow, and I’ll pick up the project sometime after that.

8 Bit Dreams wrote: 26 Mar 2019 05:12 Yes, no Zorrolll RAM under KS 1.3 - that's normal.

BTW, what Kickstart versions support Zorro III out of the box? 3.0 and later?

Hi Kludge ,

What frequency is your cpu running ?
I had similar issues as while building the tf534, I used a 20Mhz crystal ,where Diagrom passed with all test ...
But KS 3.1 I had failed to start. I had this solved when I put a higher frequency as a 48Mhz crystal in ,and all was fine.

And yes the silk screen is wrong for the IDE for pin 1,this took me some time to figure this out as well :oops: ...