CDTV Relocator for the TF536

[supaduper]

Yep you have built it correctly so it's good to go

[utri007]

Yep you have built it correctly so it`s good to go

Thanks! Couldn't find a picture build adapter and wanted to be sure.

[go0se]

I'm no expert, but the orientation looks good to me!

Check all your ZIF pins for bridges, some look a little rough.

See marked locations on image.

IMG_20220111_181501.jpg (136.97 KiB) Viewed 5097 times

[utri007]

I'm no expert, but the orientation looks good to me!

Check all your ZIF pins for bridges, some look a little rough.

See marked locations on image.

Thanks, but that was first thing I did when it was ready. One you marked to picture, is one I fixed.

[go0se]

So is it working?

[richx]

Here is my attempt to build eprom adapter. Could somebody confirm that components are right side of pcb?

Are those square pins? Those are too thick and will damage a regular leaf/wipe socket. The round precision machined pin headers seem to be most popular and are much thinner, but still thicker than IC leadframe pins.

[MrJones]

Hi All, first time poster here - i'm currently looking at fitting my TF536 into a CDTV and I think i need the 44 pin IDE flipper board go0se made. Does anyone have files to have those made, or have any for sale? Thanks heaps! -Paul

[utri007]

I'm no expert, but the orientation looks good to me!

Check all your ZIF pins for bridges, some look a little rough.

See marked locations on image.


IMG_20220111_181501.jpg

After two years, I’ve been trying to program extended ROMs without success. Two years ago, I successfully programmed two sets of extended ROMs, but now, using the same equipment, it doesn’t work.

The programmer just says "failed." I have the adapter connected. Should I choose M27C1000, M27C1001, or MBM27C1000?

What about the EPROMs? I have two MX27C1000DC EPROMs and ten MBM27C1000A EPROMs. Should those work? I can read them and perform a blank check, but when I try to program them, it just gives the error "failed."

When I load a single file, I select the low and high bytes to generate the low and high ROMs.

P.S. Here are the dimensions for an accelerator that would fit inside a CDTV without relocators.

CDTV_accelerator.jpg (225.86 KiB) Viewed 1693 times

[supaduper]

Using the adapter in the TL8266 you need to use M27C1001 in the device software

[go0se]

When I load a single file, I select the low and high bytes to generate the low and high ROMs.

It's a long time since I've looked at this but If you follow the patch process at :

https://github.com/C4ptFuture/cdtv-os235patch

Then you should end up with two distinct files :

CDTV_v2_35_U34_Even.bin
CDTV_v2_35_U35_Odd.bin

That are written as-as to individual EPROMS.

As supaduper says, select M27C1001 in the software, provided you are using a TL866 in conjunction with the adapter. It should say words to that effect on the back of the adapter

As a side note, this is TL866(/2 Plus) specific. Other fancy programmers, and potentially the newer XGECU T48 (TL866-3G) / T56 "might" support the M27C1000 without the need for the adapter, but the TL866/2 was the common programmer at that time. Perhaps someone with a T48 / T56 could confirm direct support without the need for that Heath Robinson adapter ?