UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - INS8073

audiokit · 2nd May 2021, 5:57 pm

From this afternoon, the INS8073 is alive!

I will post the final schematic.
I could not get the clock pulsing from the schematic that was drawn in my first post. After modification with the same clock I used for the INS8060, all worked fine. This means I only need one inverter from the 74LS14 (TTY after F1)
Mark you were right about the D1, D2, I had to pull them to ground to get 4800 baud at start up.
Tiny basic is a bit different from NIBBLE so I have to find my way programming it but all seem to work as described in the manual.
I enclose some pictures so you can see the result of my weekend's work.

2nd May 2021, 5:57 pm	#44
audiokit Triode Join Date: Jan 2021 Location: Hulst, Netherlands. Posts: 47	Re: INS8073 - What I wanted, but never got. From this afternoon, the INS8073 is alive! I will post the final schematic. I could not get the clock pulsing from the schematic that was drawn in my first post. After modification with the same clock I used for the INS8060, all worked fine. This means I only need one inverter from the 74LS14 (TTY after F1) Mark you were right about the D1, D2, I had to pull them to ground to get 4800 baud at start up. Tiny basic is a bit different from NIBBLE so I have to find my way programming it but all seem to work as described in the manual. I enclose some pictures so you can see the result of my weekend's work. Attached Thumbnails Last edited by audiokit; 2nd May 2021 at 6:06 pm.