Toshiba 3006GAL, 4006GAH, MK6006GAH 10.8.32 SET MAX ADDRESS EXT (37h), 10.8.33 Read Native Max Address (F8h)

360050398

10.8.32 SET MAX ADDRESS EXT (37h)

COMMAND CODE		0 0 1 1 0 1 1 1		REGISTER
		REGISTER SETTING	NORMAL COMPLETION
DR		drive no.		no change
LBA	Current	Max LBA(7:0)	HOB=0		no change
Low	Previous	Max LBA(31:24)	HOB=1		no change
LBA	Current	Max LBA(15:8)	HOB=0		no change
Mid	Previous	Max LBA(39:32)	HOB=1		no change
LBA	Current	Max LBA(23:16)	HOB=0		no change
High	Previous	Max LBA(47:40)	HOB=1		no change
SC	Current	00H / 01 H	HOB=0		no change
	Previous	reserved	HOB=1		no change
FT	Current	reserved	HOB=0		no change
	Previous	reserved	HOB=1		no change

This command specifies the the maximum address in a range of actual drive capacity. If the address exceeding the set value is accessed , “ ABORT ERROR “ error will be reported. This set value affects the values of WORD 60, 61, 100-103 of IDENTIFY DEVICE command.

This command shall be immediately preceded by Read Native Max Address EXT command. Otherwise, it will be terminated with “ ABORT ERROR ” .

If this command is issued twice with a volatile bit set to 1 after power-up or hardware reset, “ID Not Found error” will be reported.

If a host protected area has been established by a SET MAX ADDRESS command, this command will be terminated with “ ABORT ERROR ” .

Volatile bit ( SC register bit 0 ) :

If this command is issued with a volatile bit set to 1, the set value of this command is valid after power-up or hardware reset.

If this command is issued with a volatile bit cleared to 0, the set value of this command shall be cleared after hard reset or power-on and the maximam value shall be the last value with a volatile bit set to 1.

10.8.33 Read Native Max Address (F8h)

COMMAND CODE			1 1 1 1 1 0 0 0	REGISTER
	REGISTER SETTING			NORMAL COMPLETION
DR		DRIVE No.		no change
CY				maximum cylinder number
HD				maximum head number
SN				maximum sector number
LBA				maximum LBA

This command sets the maximum address in CY, HD, SN register. If LBA ( DRV / HD register bit6 ) is set to 1, the maximum address shall be LBA value.

If the 48-bit native max address is greater than 268,435,455, the Read Native Max Address command shall return a maximum value of 268,435,454.

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