OperationThough designed with the Heritage/1 in mind, this BUS-LAB is a generic tool (I think).
Once connected to the LAB, buses in the target circuit are constantly monitored by LEDs in the BUS MON block of the LAB's front panel. Additional (8) signals can be monitored in the AUX block.
ENTRY SWITCHES write data to the selected bus. Switches labeled "OE" in each bus open a 3-State buffer from the switches to that bus. Caution must be observed for not to open more than one of the OE switches as the same time.
The switches and LEDs in the REG CONTROL block provide manual control signals to the different registers. Switches in the AUX block can be used for same purpose.
Finally is the CLOCK section at the bottom. The "CLK SRC" switch selects the source for the clock; this can be either an oscillator provided by the LAB or the CLK switch. The resulting clock signal is monitored by the CLK LED.
Power (regulated 5V) is provided too. This is monitored by the "+5V" LED.
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Project start date: May 13 of 2009
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