further work on new keyboard scanning routine

c64/kernal/keyboard/kb_matrix_row_offsets.s

@@ -0,0 +1,23 @@
+
+//
+// Helper values to quickly determine row offset from the start of keyboard matrix
+//
+
+
+#if !CONFIG_SCNKEY_TWW_CTR
+
+
+kb_matrix_row_offsets:
+
+	// - offsets (in bytes) to the first bytes of keyboard matrix rows
+
+	.byte 0*8
+	.byte 1*8
+	.byte 2*8
+	.byte 3*8
+	.byte 4*8
+	.byte 5*8
+	.byte 6*8
+	.byte 7*8
+
+#endif // no CONFIG_SCNKEY_TWW_CTR