HP Vectra Technical Reference Manual page 370

8.2.15 Extended Hard Disc Data Area
40:08CH
01 S40~FD
__STATUS__REG
Hard disc status reg. copy
~
40:08DH
01
S40~FD
__
ERRO~REG
Hard disc error reg. copy
40:08EH
01
S40~FD __ INT~FLAG Hard disc interrupt flag
40:08FH
01
S40~FD __CTRl--FLAG
Hard disc controller flag
8.2.16 Extended Flexible Disc Data Area
This data area is used by the flexible disc driver to store information about the current media in
the drives and what operations are being performed on it.
40:090H
01 S40~FLOPPY __MEDIAD Drive 0 media state
(see table 8.9)
40:091H
01
S40~FLOPPY
__MEDIA1 Drive 1 media state
40:092H
01
S40~FLOPPY __OPERD
Drive 0 operation state
40:093H
01 S40~FLOPPY __OPER 1 Drive 1 operation state
40:094H
01
S40~FLOPPY
__TRACKO Drive 0 current track
40:095H
01
S40~FLOPPY
__TRACK1 Drive 1 current track
40:096H
01
S40~FLOPPY __RESERVED
Flexible disc reserved byte
Memory Map 361