I thought I could read schematics, but I have this problem: sometimes there are unnamed signals connected to buses and I don't know where they are supposed to be connected.
IC3 pis 14...23 IC1 pins 12...19
How to read those?
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Sign up to join this communityI thought I could read schematics, but I have this problem: sometimes there are unnamed signals connected to buses and I don't know where they are supposed to be connected.
IC3 pis 14...23 IC1 pins 12...19
How to read those?
You're right, it isn't clear. It would be interesting to see the netlist produced from that schematic.
However, we can infer a few things about the application.
It's a "GAL/ATF Blaster", and it would seem that IC1 and IC3 are the sockets into which you put the device being "blasted". Only one will be occupied at a time.
Furthermore, the O[0..9]
bus is simply connected to a pack of pulldown resistors, and the only purpose seems to be to ground the unused outputs on the device being programed.
Therefore, it's probably safe to assume that each pin gets its own pulldown, and that it's safe to connect the same pulldown to a pin on both sockets.