diff -c clock-029\clock.c clock\clock.c
*** clock-029\clock.c	Mon Nov 10 04:04:34 2014
--- clock\clock.c	Sat Nov 19 08:09:50 2016
***************
*** 12,18 ****
   *   (forked from wsmon-020)
   *      (21 <== 2.1 <== 021)
   */
! #define VERSION   29
  
  /*
   * state for clock operations
--- 12,18 ----
   *   (forked from wsmon-020)
   *      (21 <== 2.1 <== 021)
   */
! #define VERSION   31
  
  /*
   * state for clock operations
diff -c clock-029\main.c clock\main.c
*** clock-029\main.c	Mon Nov 10 03:59:08 2014
--- clock\main.c	Sun Nov 20 09:31:03 2016
***************
*** 11,17 ****
  	 *   | LPC810     |
  	 *   ) P  M021F   |
  	 *   ) X  1M28603 |
! 	 *   | N  +D3414C | ... year 3, week 41, 4C' ver.13.4
  	 *   +------------+
  	 *      | Dev.ID:  0x00008100
  	 *      | B.L.Ver: 13.4
--- 11,17 ----
  	 *   | LPC810     |
  	 *   ) P  M021F   |
  	 *   ) X  1M28603 |
! 	 *   | N  +D3414C | ... year 3, week 41, '4C' ver.13.4
  	 *   +------------+
  	 *      | Dev.ID:  0x00008100
  	 *      | B.L.Ver: 13.4
***************
*** 99,104 ****
--- 99,117 ----
  	tmp = (tmp & ~0x3) | 0x0;	/* flash access time = 1 system clock */
  	LPC_FMC->FLASHCFG = tmp;
  #endif /* n */
+ 
+ 	{
+ 		/*
+ 		 * wait for the external oscilator stable.
+ 		 *   here, because before initial_sysCLK(), this software loop
+ 		 *   may waste 2.5 times longer, I don't care.
+ 		 */
+ 		VOLATILE u_long ttt;
+ 
+ 		for(ttt=0; ttt<(LOOP_WAIT_1msec * 250); ttt++) {
+ 			;
+ 		}
+ 	}
  
  	/*
  	 * setup PLL for max 30MHz processing speed