The TF536 on a CDTV (Project Abandoned)

[terriblefire]

That relocator *looks* like it wont move the CPU far enough. methinks you'll still be clipping that cap ... just... if it doesnt work maybe you can get the sources and tweak it a bit... it wont need to move far.

[go0se]

Does the lid close?

I haven't got that far yet!

[PhilC]

I have a board file from Eagle for a similar relocator id bedn working on for the ST. Let me know and I can send it if you need it.

[go0se]

That relocator *looks* like it wont move the CPU far enough. methinks you'll still be clipping that cap ... just... if it doesnt work maybe you can get the sources and tweak it a bit... it wont need to move far.

Yes, the ST?? version that 8BitDreams was discussing won't move the 536 far enough. The new version I've done moves it a bit further down.

CDTV_Relocator2.resized.png (125.57 KiB) Viewed 3632 times

I've revised the design again and done another version which is just a straight run with a hole for cap C163.

CDTV_Relocator_V2_1.resized.png (173.06 KiB) Viewed 3632 times

This one has the advantage of being under 100mm wide so it will be cheaper to manufacture.

The plastic part of the male pin headers are 4mm high. the CDTV 68000 socket gives an additional 4mm approx above the motherboard so:

68000 socket -> 4mm
Male pin header from relocator into the 68000 socket -> 4mm
Thickness of relocator board -> 1.6mm
Male pin header between relocator and TF536 -> 4mm

When using male headers between boards they don't quite sit flush with the PCB on one side so that will give an extra ~0.5mm.

So the total height of the 536 above the CDTV motherboard will be roughly 14mm. This is more than enough to clear Cap C163 height wise.

Adding another 1.6mm for the TF536 board and 4mm for the unsocketed ceramic 68030 ( The plastic ones look to be the same ) we get a total of 19.6mm from the surface of the CDTV motherboard to the highest point of the TF536.

This, as far as I can tell is within +/- 1mm of the height of the lid above the motherboard. The lid will close but will probably be resting on the 68030. Not ideal but not a disaster either. Obviously this old CDTV isn't exactly factory spec so things might have moved around a bit to mess up my measurements. But we'll give it a go.

[go0se]

I have a board file from Eagle for a similar relocator id bedn working on for the ST. Let me know and I can send it if you need it.

Cheers Phil, I've made this Kicad version and it's pretty much good to go, pending some more slight changes.

[utri007]

@go0se Now we just need to wait three months that you get those relocators from China

[alenppc]

Adding another 1.6mm for the TF536 board and 4mm for the unsocketed ceramic 68030 ( The plastic ones look to be the same )

The plastic ones sit a bit taller (about 2-3mm) than the ceramic ones because of the blob they have on some pins, so I guess it's best to use a ceramic one here.

[go0se]

Adding another 1.6mm for the TF536 board and 4mm for the unsocketed ceramic 68030 ( The plastic ones look to be the same )

The plastic ones sit a bit taller (about 2-3mm) than the ceramic ones because of the blob they have on some pins, so I guess it's best to use a ceramic one here.

Well spotted, cheers!

[go0se]

@go0se Now we just need to wait three months that you get those relocators from China

Ha, JLCPCB are not usually that bad. Even with the super budget economy postage option they usually arrive within two weeks from completed production. Still, I want to ensure that there are no howlers in the design(s)!

Also, a production run of 10 of these relocators should be more than enough to cover the entire worldwide CDTV community

[utri007]

There is a 461 members in facebook's CDTV user group.

CDTV is most sexy Amiga ever. and like most "sexy things" it might be little difficult in person.