On Thu, Jun 24, 2021 at 11:54 AM Gerrit Heitsch <gerrit_at_laosinh.s.bawue.de> wrote: > On 6/24/21 5:27 PM, Jim Brain wrote: > > > The little PCB I completely understand and it makes sense to me. What > > I'm confused on is how the little 24 pin EPROM socket's lines get under > > the ceramic packaging and back to the die... > The two Z8613 chips I posted a picture of are functionally equivalent and are likely wired the same way. In the case of the ceramic package, the pins from the EPROM socket go straight into the ceramic where it must connect to a similar circuit as the mini-PCB version. You cannot remove the socket or you will destroy the chip. Here are two close-up pictures of just under the EPROM socket if it helps: https://vintagecomputer.ca/wp-content/uploads/2021/06/Z8piggy1.jpg https://vintagecomputer.ca/wp-content/uploads/2021/06/Z8piggy2.jpg SantoReceived on 2021-06-24 21:00:02
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