Update MIN_HANDSHAKE_WAIT_TIME to 85 microseconds

Aligned MIN_HANDSHAKE_WAIT_TIME with the Amiga 500 Technical Reference Manual's recommended value of 85 microseconds. Previously, it was set to 65 microseconds, which worked for my specific A500 keyboard model but may not be compatible with all keyboard variations and revisions. The value can be increased further if instability is observed, without noticeable delays in keyboard performance.

Author: arvvoid

a500kybhid.ino

@@ -101,7 +101,7 @@
 #define BITMASK_JOY2 0b11110011 // IO A0..A5
 #endif
 
-#define MIN_HANDSHAKE_WAIT_TIME 65 //microsecconds: as specified in the Amiga 500 Technical Reference Manual
+#define MIN_HANDSHAKE_WAIT_TIME 85 //microsecconds: as specified in the Amiga 500 Technical Reference Manual
 
 // Preprocessor flag to enable or disable debug mode
 // Debug mode provides some console output.