PIC24FJ64读写FLASH

自编程代码调试已经通过,贴上代码,求解一个擦除范围的问题.手册上说可以按块擦除(8行围一块),但是调试时是都给擦除了.数据手册上这样写不是自相矛盾么.贴上我的代码.读写擦除都正常,就是擦除长度无法控制.
#include "p24fj64ga006.h"
_CONFIG2(IESO_OFF&FNOSC_PRIPLL&FCKSM_CSDCMD&POSCMOD_XT/*&OSCIOFNC_OFF*/);
_CONFIG1(JTAGEN_OFF&GCP_OFF&GWRP_OFF&COE_OFF&ICS_PGx2&FWDTEN_OFF/*&BKBUG_ON&WINDIS_OFF&FWPSA_PR32&WDTPS_PS1*/);

#define UINT32 unsigned long
#define UINT16 unsigned int
#define UINT8  unsigned char
#define FLASH_ERASEPAGE 0x4042
#define FLASH_PROGLINE  0x4001
void delay(unsigned int a)
{
unsigned char x,y;
for(x=a;x>0;x--)
  for(y=1105;y>0;y--);
}
void FlashReadData(UINT32 FlashAddr,UINT16 *Dest,UINT8 DataNum)
{
        TBLPAG = ((FlashAddr & 0x7F0000)>>16);
        FlashAddr = (FlashAddr & 0x00FFFF);
          for(;DataNum>0;DataNum--)
        {
            asm("tblrdl.w [%1],%0":"=r"(*Dest):"r"(FlashAddr));
                Dest++;
//   asm("tblrdl.b [%1],%0":"=r"(*Dest):"r"(FlashAddr+1));
//    Dest++;
//              asm("tblrdh.w [%1],%0":"=r"(*Dest):"r"(FlashAddr));
//             Dest++;
              FlashAddr += 2;
    delay(1);
        }
}
void FlashErasePage(UINT32 FlashAddr)
{        
          NVMCON = FLASH_ERASEPAGE;
         
        TBLPAG = ((FlashAddr & 0x7F0000)>>16);
        FlashAddr = (FlashAddr & 0x00FFFF);
//                asm("tblwtl w0,[w0]");
  asm("tblwtl %0, [w0]" : /* no outputs */ : "r"(FlashAddr));

          NVMKEY = 0x55;
          NVMKEY = 0xaa;
          _WR = 1;
          Nop();
          Nop();
}
void FlashWriteData(UINT32 FlashAddr,UINT16 *Dest,UINT8 DataNum)
{
                FlashErasePage(FlashAddr);
          NVMCON = FLASH_PROGLINE;
         
          TBLPAG = ((FlashAddr & 0x7F0000)>>16);
       FlashAddr = (FlashAddr & 0x00FFFF);
          for(;DataNum>0;DataNum--)
        {        
            
            asm("tblwtl.w %0,[%1]"::"r"(*Dest),"d"(FlashAddr));
            Dest++;
//            asm("tblwth.w %0,[%1]"::"r"(*Dest),"d"(FlashAddr));
//            Dest++;
         FlashAddr += 2;
   delay(1);
   
          }
            NVMKEY = 0x55;
                NVMKEY = 0xaa;
                _WR = 1;
          Nop();
          Nop();
}
void main()
{
int a[]={0x2100,0x0000,0x0000,0x0010};
int aa[]={0x1234,0x5678,0x9abc,0xdef1,0x2345,0x6789,
     0x1234,0x5678,0x9abc,0xdef1,0x2345,0x6789,
   0x1234,0x5678,0x9abc,0xdef1,0x2345,0x6789,
   0x1234,0x5678,0x9abc,0xdef1,0x2345,0x6789,
   0x1234,0x5678,0x9abc,0xdef1,0x2345,0x6789,
   0x1234,0x5678,0x9abc,0xdef1,0x2345,0x6789,
   0x1234,0x5678,0x9abc,0xdef1,0x2345,0x6789,
   0x1234,0x5678,0x9abc,0xdef1,0x2345,0x6789,
   0x1234,0x5678,0x9abc,0xdef1,0x2345,0x6789
    };
int bb[]={0xaaaa,0x5555,0xffff,0x0000,0xabcd,0xabcd};
int cc[]={0,0,0,0,0,0};
AD1PCFG=0XFFFF;
TRISB=0;
LATB=0X0000;
delay(50);
FlashReadData(0x5000,cc,6);
delay(50);
  Nop();
    Nop();
FlashErasePage(0x5060);
delay(50);
Nop();
    Nop();
FlashWriteData(0x5000,aa,54);
delay(50);
Nop();
    Nop();
FlashWriteData(0x5060,a,4);
delay(50);
Nop();
    Nop();
FlashWriteData(0x5060,bb,6);
delay(50);
Nop();
    Nop();

FlashReadData(0x5000,cc,6);
delay(50);
Nop();
    Nop();
if(*cc==*aa)
_RB8=1;
FlashErasePage(0x5060);
delay(50);
Nop();
    Nop();
FlashReadData(0x5000,cc,6);
delay(50);
Nop();
    Nop();
if(*cc==*aa)
_RB8=1;
else
_RB8=0;

while(1);
}