Specifications

RA7x/SA7x Pocket Reference Guide 23
Figure 13 RA7x Mode Byte (Byte 5)
X X 0 X
X X X X
(S7) 0 = 512-Byte sector format (16 bit)
1 = 576-Byte sector format (18 bit)
(no current plan to implement 18 bit)
Byte 5 Mode Byte
(DB) 0 = DBN area access disabled
1 = DBN area access enabled
(FO) 0 = Formatting operations disabled
1 = Formatting operations enabled
(DD) 0 =Drive enabled by controller error routine or diagnostic
1 = Drive disabled by controller error routine or diagnostic
(Fault Light = ON)
(W1) 0 = Write Protect switch for subunit 0 is out
1 = Write Protect switch for subunit 0 is ON
(W2) Not implemented
(ED1) Error log disable (set by 2-board controller diagnostics)
(ED0) Error log disable (set by 2-board controller diagnostics)
COM-R058