mirror of https://github.com/sanni/cartreader.git synced 2024-11-14 00:45:07 +01:00

To calibrate the Clock Generator you first need to enable it in config.h by removing // in front of the following two options:

/****/

/* [ SNES Core/CLOCKGEN: Read Clock Generator Calibration Data ---- ]
    Toggle clock calibration menu and whether or not to use calibration data from snes_clk.txt
*/

#define OPTION_CLOCKGEN_CALIBRATION
#define OPTION_CLOCKGEN_USE_CALIBRATION

Then you find a new menu entry under "Super Nintendo/SFC" called "Calibrate Clock". Once the calibration function was loaded place one end of a jumper wire against SNES slot pin 43(A18/BA2) and the other end of the wire against one of the following pins and it should read those values:

3072000.00 Hz when connected to SNES slot pin 56(CIC Clock)
4000000.00 Hz when connected to SNES slot pin 1(EXT Clock)
1000000.00 Hz when connected to SNES slot pin 57(CPU Clock)

Once you have adjusted the clock to match the values more closely hold the button for a very long time and let it go to save the setting.

Video:

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.