This was useful. Thank you. - My issue with the issue 1 ULA is that a connected Interface 1 doesn't work - i.e. it doesn't recognise the *CAT 1 command until you apply the dead-cockroach mod.
Yes I suppose in order to use the issue 1 ULA you should be on an issue 1 or 2 PCB with no spider mod and a dead cockroach installed to get proper function
Hi I have a issue 1.5 ,,, but don't have the chip ! I will need this to finish this computer of , do you know where I can source the little breadboard and chip Thanks 😊
? you mean an issue 2 board with a issue 1 ula? and no mod? likely the original ula has been replaced at some time with an earlier version....also both issue 1 and 2 ulas need a transistor adding to the iorqula line to correct io port problems , this was usually fitted to issue 2 machines
Thanks for watching and as always, if you spot anything incorrect please comment, accuracy of information is really important on this channel
Having just got my first ever 1.5 recently, this video really shed some light on Sinclair's cost-saving work arounds! Great video mate.
Fascinating, thanks for this detailed (and very clear!) walk-through of the mod. Great work.
Thanks! Enjoyed this one
This was very informative. Thanks for going into so much detail.
great info and dont think anyone else has explored it either yet
There are some websites out there that go into some detail. There is more to learn but it would be a long video, maybe one for a Patreon blog post!
What a great video, so glad I stumbled across this channel. 👍🏼
Thanks for this nice and interesting video. You're great!
Another really interesting video, well done.
Thanks John
Very well explained and presented.
Glad it was helpful!
This was useful. Thank you. - My issue with the issue 1 ULA is that a connected Interface 1 doesn't work - i.e. it doesn't recognise the *CAT 1 command until you apply the dead-cockroach mod.
Yes I suppose in order to use the issue 1 ULA you should be on an issue 1 or 2 PCB with no spider mod and a dead cockroach installed to get proper function
Hi I have a issue 1.5 ,,, but don't have the chip ! I will need this to finish this computer of , do you know where I can source the little breadboard and chip
Thanks 😊
You could make it up yourself, try eBay for the chip!
? you mean an issue 2 board with a issue 1 ula? and no mod? likely the original ula has been replaced at some time with an earlier version....also both issue 1 and 2 ulas need a transistor adding to the iorqula line to correct io port problems , this was usually fitted to issue 2 machines
pretty sure i have one of these, somewhere, in a dktronics keyboard case!
Nice content pal👍! Wondering if any PCBs you may need when repairing? We'd love to give our support and achieve any collabs together. (PCBWay)
Thank you for the kind comment