The TF536 will likely not be produced again. Again due to reasons above. TF536_batch4_sm2.jpg https://www.exxosforum.co.uk/atari/store2/#0184 With the gerbers being released and them not selling much anymore, I don't think there is much need for me to stock these again. But thanks to everyone who pu...

LCSC don't seem to stock much of what I use anymore. Seems anything big like semis/ sockets etc, they don't sell anymore.

I use LCSC just for assembly as JLC use them, but beyond that, I only bother with mouser now. If mouser don't stock it, then its generally not worth the trouble anymore.

Find of the day! NOS MSTE PSUs.

Have you ran a memory test on 4MB ?

Also if you got the switch to hot during soldering it could have bad contacts.

I take it that this resistor needs to be changed to 10K and that this will be the reason the 1MB switch isn't working? 100K is probably fine. Its only a pull up. You could try tagging a 10K across it, but its only a guess as to what your problem is. I can't really think of anything else. A lot of t...

Due to EOL chips https://www.exxosforum.co.uk/forum/viewtopic.php?f=114&t=6961 regrettably some items will have to be put out of production. First up is the ST536. TF536_STV3sm.jpg https://www.exxosforum.co.uk/atari/store2/#0220 At the time of typing there are 20 PCBs left in stock. Considering ...

Most TTL chips aren't being manufactured any more either as the fabs are only interested in high margin chips now. Yeah it's very hard to find TTL chips now. I've been buying tubes of 100 from Mouser for some items to keep stock of what I can. I have been saying for a while that things like the 030...

Even the buffers are now EOL

Just saw in mouser :( Capture.PNG That is pretty much the end of a lot of stuff then. I only use the 144XL on the ST536 / STE536, so I guess for the few which will get built, it will make no odds. But for sure, its the end of a lot of projects for the future :( The 288XL is like £40-£100 now. So I t...

@exxos I'd be keen to build up an alpha. One thought: perhaps the IDE header could be on the bottom side if it interferes with the keyboard or anything else. Assuming it doesn't interfere with anything on the motherboard :) It's hard to say how it will all fit until its built up properly and evalua...