430的ADC12，采用单通道多次采样的模式，未开中断，请问：第一，ad转换完成后，如果上次转换结果未读取，本次转换结果是否覆盖原有数据？第二，结果是否存放在ADC12MEM0？

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//******************************************************************************
//  MSP430xG461x Demo - ADC12, Repeated Single Channel Conversions
//
//  This example shows how to perform repeated conversions on a single channel
//  using "repeat-single-channel" mode.  AVcc is used for the reference and
//  repeated conversions are performed on Channel A0. Each conversion result
//  is moved to an 8-element array called Results[].  Test by applying a
//  voltage to channel A0, then running. To view the conversion results, open a
//  watch window with the debugger and view Results[].
//  ACLK = 32kHz, MCLK = SMCLK = default DCO 1048576Hz, ADC12CLK = ADC12OSC
//
//                MSP430xG461x
//              ---------------
//             |            XIN|-
//      Vin -->|P6.0/A0        | 32kHz
//             |           XOUT|-
//
//   Y. Yang
//   Texas Instruments Inc.
//   September 2012 
//   Built with CCE Version: 5.2.1 and IAR Embedded Workbench Version: 6.4
//******************************************************************************
#include <msp430.h>

volatile unsigned int Results[8];
unsigned int Index;

int main(void)
{
  WDTCTL = WDTPW|WDTHOLD;                   // Stop watchdog timer
  P6SEL |= 0x01;                            // ADC sampled on P6.0
  ADC12CTL0 = ADC12ON|SHT0_8|MSC;           // Turn on ADC12, Sample and hold 256 ADC12CLK cycles
  ADC12CTL1 = SHP|CONSEQ_2;                 // Use sampling timer, set mode
  ADC12IE = 0x01;                           // Enable ADC12IFG.0
  ADC12CTL0 |= ENC;                         // Enable conversions
  __enable_interrupt();                     // Enable interrupts
  ADC12CTL0 |= ADC12SC;                     // Start conversion
  __bis_SR_register(LPM0_bits);             // LPM0
}

#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector = ADC12_VECTOR
__interrupt void ADC12_ISR(void)
#elif defined(__GNUC__)
void __attribute__ ((interrupt(ADC12_VECTOR))) ADC12_ISR (void)
#else
#error Compiler not supported!
#endif
{
  Results[Index++] = ADC12MEM0;             // Move result, IFG is cleared
  Index &= 0x07;                            // Modulo pointer, counts up to 7 and resets
  __no_operation();                         // SET BREAKPOINT HERE
}