Original URL : https://retrobrewcomputers.org/doku.php?id=boards:ecb:4pio:errata
 Snapshot date: 2019-09-21
 Generator    : wayback-archiver

Trace cuts:

Cut pin 26 of IC12 (PIO-3) away from the ground plan.

Cut the trace between C24 and pin 11 of IC12 (PIO-3)

Cut the trace between C23 and pin 11 of IC9 (PIO-2)

Cut the ground plane away from the via.

Cut the ground plane to separate pin 26 of IC8 (PIO-0) and C11.

Cut the trace from C11 to the via.

Cut the trace between pin 11 of IC8 (PIO-0) and C8.

Cut the trace between pin 5 of IC8 (PIO-0) and pin 18 of IC4.

Cut the trace between pin 6 of IC8 (PIO-0) and pin 17 of IC4.

Cut the trace between pin 34 of IC9 (PIO-2) and pin 18 of connector P3. (Updated 3-Feb-2019)

+5v connection:

A. Link pin 26 (IC12 PIO-3) to C12 to C9 to C11 to C8.

GND connection:

B. Link C12 to C9 to C11 to pin 11 IC8 (PIO-0) to C8.

Address selection connection:

C. Link pin 5 of IC8 (PIO-0) and pin 17 of IC4.

D. Link pin 6 of IC8 (PIO-0) and pin 18 of IC4.

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