PLCC to DIP adaptor - TF536 on A600

[alenppc]

I just received the adapter, many thanks! I built it right away, I was even able to cram a 1206 resistor on there since I didn't have any 0805s.

It works!!! As noticed by others, it won't boot with Kickstart 3.1 and the A2000-fixed firmware BUT if you flash it with a previous version (the one that won't work on A2000), it boots right away!

A600.jpg

[Lemaru]

Excellent. As soon as I'm off work tomorrow I'll be reflashing

Which version firmwares the best to go for as I got several downloaded

[Lemaru]

Now kicking myself for not trying. Simple things I guess

[alenppc]

I honestly expected the phase7 firmware would be the issue, but it's not. The phase 5 firmware doesn't even boot on the A600. Yet, oddly enough it's the A2000 fix that breaks the A600 compatibility. The experimental ones that Stephen did before the A2000 fix work, even the one with the 25 mhz IDE.

[alenppc]

So the card does tend to pop off after a while with the case closed. I think for the A600 we have to solder the CPU like for the CDTV.

[Lemaru]

Do you mean the PLCC popping off the 68k or the Terriblefire popping out the dip socket/strip?

I haven't had any issues with the connection once the dip socket or strip is mounted at an angle rather than flush with the adaptor PCB. If the socket/strip is soldered in flat then I found the keyboard does slightly hit the bottom edge of the card which made it lift out the socket a little. PLCC always stays on the CPU though once it's pushed down all they way. My 68030 is socketed too. I don't actually have any screws holding mine down at present as I was removing it and trying in other machines.

I was going to do a small 3D printed support just to support the bottom of the card too at some point.

[alenppc]

Do you mean the PLCC popping off the 68k or the Terriblefire popping out the dip socket/strip?

I haven't had any issues with the connection once the dip socket or strip is mounted at an angle rather than flush with the adaptor PCB. If the socket/strip is soldered in flat then I found the keyboard does slightly hit the bottom edge of the card which made it lift out the socket a little. PLCC always stays on the CPU though once it's pushed down all they way. My 68030 is socketed too. I don't actually have any screws holding mine down at present as I was removing it and trying in other machines.

I was going to do a small 3D printed support just to support the bottom of the card too at some point.

I had to solder them straight because I don't have an actual 68000 CPU socket, but instead use pinstrips. You may be right it is the bottom of the board that makes it pop when the keyboard is resting on it and not the CPU. I figured it maybe the CPU since it's quite tall. But I will fix it.

[Lemaru]

Yeah it's not so easy to solder the strips at an angle unless you have a socket to use to hold them in place as a guide so to speak.

I did find some decent priced DIP sockets (turned pin) so will buy some up when I get some funds.

If it weren't for the keyboard header being in the way then the socket could be moved back a bit more

[alenppc]

Those PLCC sockets that you use are incredible. I am scared I am gonna tear off the 68000 off the board when I remove it.

[Lemaru]

Yeah, especially when you take a millimetre off the edge. If I had known about them years ago I could of fixed my Apollo a630 instead of selling it off as I could never get a good secure fit.

Best to pop it off by lifting one side first. Comes off ok then, else it does feel like it's stuck a bit too well.

I got a load of 3M sockets which, while they work, just aren't as strong a fit.

Shame the Augat and Amp sockets (they are pretty much identical) are discontinued