Debug / Self Test
Self Test can help identifing issues with the flex install.
In order to perform a test for the audio signals (
SDATA) make sure you run a game outputting audio.
The Everdrive menu does not output any audio!
This is the clock source of the HDMI output. In normal operation, this shows
X here points to a problem with the
If you get an
X here, N64Digital gets a clock signal, but the PLL cannot lock. This might be related to a weak/intermittent
PLL_B is connected to the N64Digital's onboard crystal oscillator.
The test accumulates data read from the FPGA and marks the pins according to this:
X signal always has the same value as it's adjacent pins (possible bridge to adjacent pin)
L signal value differs from it's adjacent pin, but is always low (possible bridge to ground)
H signal value differs from it's adjacent pin, but is always high (possible bridge to 3.3V)
❤️ signal does not match any of the above conditions -> good!
The test can be reset with controller button
R. After a test reset, it's normal to see signals testing bad for some time.
|Self Test||Flex cable pin(s)||RCP-NUS pin(s)|
This shows the amount of lag introduced by N64Digital's scaler in milliseconds (
The lag depends on the configuration of the
Frame Lock setting:
minimal (lowest lag) Output buffer (and therefore output lag) is calculated for lowest possible lag. It changes depending on the following settings:
PAL Input Height
Video Standard (
normal Output buffer is calculated based on the highest possible lag for a given resolution. This prevents an output resync to occur, when setting different
off (triple buffered) you should see a lag value constantly changing as input and output frame rate are not locked.
Documentation - Index