?? scsiread10.c
字號:
#ifndef _SCSI_DEFINE
#include "SCSI.c"
#endif
void SCSIRead10(void)
{
data WORD i;
data BYTE m,n;
xdata BYTE *sector;
xdata struct SCSIRead10Str *SCSICmdRead10=SCSICBW->CBWCB;
while (!IDEStatus(IDE_STATUS_BSY,IDE_WAIT,FALSE,255));
while (!IDEStatus(IDE_STATUS_DRDY,IDE_WAIT,TRUE,255));
sector=(BYTE *)&SCSICmdRead10->LBA;
// printf("read sector:%08lx,%02bx...",*(DWORD *)sector,(BYTE)SCSICmdRead10->Length);
IDE_WRITE_LSB(IDE_ADDR_CMD_LBA0,sector[3]);
IDE_WRITE_LSB(IDE_ADDR_CMD_LBA1,sector[2]);
IDE_WRITE_LSB(IDE_ADDR_CMD_LBA2,sector[1]);
IDE_WRITE_LSB(IDE_ADDR_CMD_LBA3,0xe0|(sector[0]&0x0f));
IDE_WRITE_LSB(IDE_ADDR_CMD_SECCNT,(BYTE)(SCSICmdRead10->Length));
IDE_WRITE_LSB(IDE_ADDR_CMD_COMMAND,IDE_CMD_READ);
UEPNUM=0x02;
for(i=0;i<SCSICmdRead10->Length;i++)
{
while (!IDEStatus(IDE_STATUS_BSY,IDE_WAIT,FALSE,255));
while (!IDEStatus(IDE_STATUS_DRDY,IDE_WAIT,TRUE,255));
for(m=0;m<8;m++)
{
SET_BIT_7(UEPSTAX); //設置DIR
for(n=0;n<32;n++)
{
IDE_READ_WORD(IDE_ADDR_CMD_DATA,UEPDATX,UEPDATX);
}
SET_BIT_4(UEPSTAX); //設置TXRDY
while(!( UEPSTAX & 0x01 )); //等待TXCMP
CLEAR_BIT_0(UEPSTAX); //清除TXCMP
}
}
}
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