Reply #5: Did Woz specify the software? [View All]

[IDemo]

If so, as an expert, he should have known better than to announce a firmware bug before analyzing the complete system.

The signs are increasingly pointing to a fault within the engine control system, but it may just as easily be a hardware issue within the analog-to-digital circuit as flawed code. Before the firmware can decide whether to accelerate or decelerate, the signal from the pedal's Hall Effect sensor must be converted from a DC voltage to a binary or Hex number. The same applies to the output: a binary number must be again converted to a voltage to control the action of the throttle servo. A cold solder joint on an A/D chip or associated component could as easily result in intermittent failure(s).