Quantum Audio Travan 40 Tape Drive STT3401A User Manual
Page 107
ATAPI Interface
Chapter 5
Seagate Travan 40 Product Manual
Page 99
Host Taskfile Registers—Outputs
Data Bits
Host Taskfile
Register
7
6
5
4
3
2
1
0
HEX
Error
rsvd
tag type (not
supported)
MCH
ABRT
EOM
ILI
00
Sector Count
N/A
N/A
Sector
Number
N/A
N/A
Byte Count
High
residual byte count (15 : 8)
00
Byte Count
Low
residual byte count ( 7 : 0)
00
Device/Head
rsvd
LBA
rsvd
DEV
SAM LUN (not used)
Status
BSY
RDY
rsvd
DSC
DRQ
Corr
rsvd
CHK
40 or 50
IDENTIFY PACKET DEVICE Data Returned to Host
Word(s)
Starting Offset
(hex)
Description of Contents
Value (hex)
0
00
General configuration bit-significant information:
15-14 10=ATAPI device
11=reserved
13 reserved
12-8 command packet set supported by the device
(01h = sequential access device)
7 1=removable media device
6-5 Method device uses when ready for Host to xfer
packet data
00=Microprocessor DRQ
(within 3 ms of receiving a PACKET command:
device shall set DRQ=1)
01=Interrupt DRQ
(sometime (no limit specified) after receiving
a PACKET command:
device shall assert INTRQ when DRQ=1
10=Accelerated DRQ
(within 50 microsecs of receiving a Packet
command: device shall set DRQ=1)
11=reserved
4-2 reserved
1-0 command packet size
00=12 byte command packet
01=16 byte command packet
1X=reserved
81C0
1-9
02
reserved
0000
10-19
14
Serial number (20 ASCII characters)
varies
20-22
28
reserved
0000
23-26
2E
Firmware revision (8 ASCII characters)
varies
27-46
36
Model number (40 ASCII characters) “Seagate STT3401A”
47-48
5E
reserved
0000