Acrosser ACE-MINI - Manual (Page 37)

Revision: 1.0
37
Command Register (04h : 05h)
Bit Field Description
Software
Readable Software
Writable
Value after
Reset
0
I/O Space. Value of 1 allows device to respond to I/O space
accesses.
Yes No 1
1
Memory Space. Value of 1 allows device to respond to
memory space accesses
Yes No 1
2
Master Enable. Value of 0 disables device from generating
bus master accesses. Not Supported
Yes No 0
3 Special Cycle. Not Supported. Yes No 0
4 Memory Write/Invalidate. Not Supported. Yes No 0
5 VGA Palette Snoop. Not Supported. Yes No 0
6 Parity Error Response. Not Supported. Yes No 0
7 Wait Cycle Control. Not Supported. Yes No 0
8 SERR# Enable. Not Supported. Yes No 0
9 Fast Back-to-Back Enable. Not Supported. Yes No 0
15 : 10 Reserved Yes No 0
Status Register (06h : 07h)
Bit Field Description
Software
Readable Software
Writable
Value after
Reset
22 : 16 Reserved Yes No 0
23 Fast Back-to-Back Capable. Not Supported. Yes No 0
24 Master Data Parity Error Detected. Not supported Yes No 0
26 : 25 DEVSEL Timing. Value of 01 is Slow. Yes No 10
27 Target Abort. 1 if Device has Signal Target Abort. Yes Yes 0
28 Received Target Abort. Not Supported. Yes No 0
29 Received Master Abort. Not Supported. Yes No 0
30 Signaled System Error. Not Supported. Yes No 0
31 Detected Parity Error. Not Supported. Yes No 0
Revision ID Register (08h)
Bit Field Description
Software
Readable Software
Writable
Value after
Reset
7 : 0 Revision ID. Identifies particular device. Yes No 0000
Class Code Register (09h : 0Bh)
Bit Field Description
Software
Readable Software
Writable
Value after
Reset
15 : 8
Specific Register Level Programming Interface (00h). No
interface defined.
Yes No 00
23 : 16 Subclass Encoding (80h). Other bridge device. Yes No 80h
31 : 24 Base Class Encoding. Other bridge Device. Yes No 06h