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4.6.5 MODE SELECT command
Table 4.46 MODE SELECT command
Bit
Byte
76543210
0 Operation Code (55h)
1 Logical Unit Number PF Reserved SP
2-6 Reserved
7-8 Parameter List Length
9-11 Reserved
The MODE SELECT command sets various device operating modes.
The PF (Page Format) bit must be 1. If the PF bit is 0, the command responds with Check
Condition.
When the SP (Save Pages) bit is 1, the ODD saves all parameter values transferred to the flash
ROM.
Parameter List Length specifies the number of bytes in the mode parameters to be transferred. If it
is 0, the command does not carry out transfer and ends normally.
If the transferred mode parameters are insufficient, the command responds with Check Conditions.
Table 4.47 lists mode parameters supported.
Table 4.47 Mode parameters
Definition Page Code Section
Drive Operation Mode Page 00h 4.6.5.1
Read-Write Error Recovery Page 01h 4.6.5.2
Flexible Disk Page 05h 4.6.5.3
Caching Page 08h 4.6.5.4
Removable Block Access Capacities Page 1Bh 4.6.5.5
Timer & Protect Page 1Ch 4.6.5.6