Hitachi P7K500 Specifications - Page 180

10.22Read Native Max Address (F8h) Block Output Registers Command Register 765 4 3210 Data --- - ---- Feature --- - ---- Sector Count Sector Number Cylinder Low Cylinder High Device/Head 1 L 1 D - - - - Command 111 1 1000 Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error ...See Below... Sector Count Sector Number V V V V V V V V Cylinder Low V V V V V V V V Cylinder High V V V V V V V V Device/Head - - - - H H H H Status ...See Below... Error Register 7 6 5 4 3 2 1 0 CRC UNC 0 IDN 0 ABT T0N AMN 0 0 0 0 0 V 0 0 Table 131 Read Native Max ADDRESS (F8h) Status Register 7 6 5 4 3 2 1 0 BSY RDY DF DSC DRQ COR IDX ERR 0V0 - - 0 - V This command returns the native max LBA/CYL of HDD which is not affected by Set Max Address command. The 48-bit native max address is greater than 268,435,455; the Read Native Max Address command shall return a value of 268,435,455. Input Parameters From The Device Sector Number In LBA mode, this register contains native max LBA bits 0-7. (L=1) In CHS mode, this register contains native max sector number. (L=0) Cylinder High/Low In LBA mode, this register contains native max LBA bits 8-15 (Low), 16-23 (High). (L=1) In CHS mode, this register contains native max cylinder number. (L=0) H In LBA mode, this register contains native max LBA bits 24-27. (L=1) In CHS mode, this register contains native max head number.(L=0) HITACHI Deskstar & CinemaStar P7K500 Hard Disk Drive specification (Rev 1.1) 172