UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Non-working Commodore PET 3016

Mark1960 · 30th Jan 2021, 11:43 pm

I think only A8 looks correct on the buffered side. All the other buffered address lines don’t seem to be pulling down correctly. A10 is different failing to pull high.

As A12 to A15 don’t go directly to memory the common factor seems to be the buffers themselves.

30th Jan 2021, 11:43 pm	#376
Mark1960 Octode Join Date: Mar 2020 Location: Kitchener, Ontario, Canada Posts: 1,297	Re: Non-working Commodore PET 3016 I think only A8 looks correct on the buffered side. All the other buffered address lines don’t seem to be pulling down correctly. A10 is different failing to pull high. As A12 to A15 don’t go directly to memory the common factor seems to be the buffers themselves.