@exxos I think we should just drop this since while it is possible to fix, I think you'd lose what's left of your sanity. Perhaps just follow the guide, set up the pi-storm the way it's intended. Then if the current build doesn't play nice with your H5, I can just share my old firmware file with yo...

Is it worth even having a switch ? Just leave it on 4MB ? A lot of games are patched to run from hard drive and 4MB machine anyway. So not sure 1MB is worth the trouble anymore.

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