To locate the correct description for the XTEST label, refer to this table:
XTEST label Word Comment --------------- ------- ----------------------------------------------------- Config 0 General configuration bit field NumCyls 1 Number of cylinders res0 2 Reserved NumHeads 3 Number of heads BytesPerTrk 4 Number of unformatted bytes per track BytesPerSec 5 Number of unformatted bytes per sector SecsPerTrack 6 Number of sectors per track d1 7 Vendor specific d2 8 Vendor specific d3 9 Vendor specific SerNo 10-19 IDE device serial number BuffType 20 Buffer type BuffSize 21 Buffer size in 512 bye increments (so, 1 = 512 bytes) ECCBytes 22 Number of ECC bytes available on r/w long commands CtrlRev 23-26 IDE device firmware revision CtrlModl 27-46 IDE device model designation string SecsPerInt 47 Bits 0-7 gives sector tx max for r/w multiple cmds DblWordFlag 48 0001h = can perform double word i/o, else cannot Capabilities 49 Bit 9: LBA Supported / Bit 8: DMA supported res1 50 Reserved PIOtiming 51 Bits 8-15: PIO data transfer cycle timing mode DMAtiming 52 Bits 8-15: DMA data transfer cycle timing mode res2 53 Reserved CurCyls 54 Number of current cylinders CurHeads 55 Number of current heads CurSPT 56 Number of current sectors (per track) SecCapLo 57 Device sector capacity low byte SecCapHi 58 Device sector capacity high byte SecParams 59 Refer to IDE Spec LBASecCapLo 60 Total number of sectors in LBA mode (low byte) LBASecCapHi 61 Total number of sectors in LBA mode (high byte) swDMATxModes 62 Refer to IDE spec table 10 mwDMATxModes 63 Refer to IDE spec table 10
SecCap and LBASecCap are 32 bit integers, and are printed in the correct