SCS I Description
M axtor Atlas 10K III 5-157
Extent Descriptor s-Data Format
The Reservation Type field defines the type of reservation in effect for the extent
being reserved. Available types of reservations are shown in Table 5-191.
Reservation Types
RelAdr is always 0: The Maxtor Atlas 10K III hard disk drive does not support relative
addressing.
I f b ot h th e L ongID a n d the E xtent b i ts = 1, then the para mete r li s t ta k es the format
shown in Table 5-192.
Parameter List When LongID and Extent Bits = 1-Data Format
I f th e L o ngID b it = 1 a n d the Ext e n t bit = 0, th en the p a ram e ter lis t le n gth is eig h t
and the parameter list has the format shown in Table 5-193.
RESERVE (10) ID Only Parameter List-Data Format
0 Rese rved RelAdr Reservati on Type
1 - 3 (MSB) Number of Blocks (LSB)
4 - 7 (MSB) Logical Block Address (LSB)
00b READ shared. No write operations are permitted by any initiator
to the reserved ext ent. Any initiator may read fr om the extent.
01b WRI TE exclusive. No other initiat o r may write to the indi cated
extent . Any initiator may read from the extent.
10b RE AD excl usive. Whi le thi s reser vation is act i ve, no ot her i nitia -
tor may be permitted to read to the indic ated extent.
11b E xclusive access. While this reservation is active, no other initi-
ator is permitted any access to the reserved ext ent.
0 - 7 (MSB) Third Par ty Device ID (LSB)
8 - n (MSB) Extent Descriptors (See Figure 5-91 Above)(LSB)
0 - 7 (MSB) Th i r d Pa rty D evi ce I D (LSB)