H2 Z80 Piggyback Signal Watcher

Schematic

     The 1733 Piggyback Signal Watcher plugs into the 1731 Z80 Backplane and provides a visual display of every signal from the 1730 Z80 Computer.  All signals are buffered using HCMOS inverters and use various colors to highlight the different signal groups, e.g. Blue for the data bus, White for address bus and so on. This allows you to visualize the operation of the computer in real time. This module has a male header mounted on top to save a backplane slot, mount directly to the CPU card or allow for signal probing. A lower cost version that takes up a backplane slot is the regular 1733 Signal Watcher that has does not have male header mounted on top.