Reference Manual

Turbo PMAC/PMAC2 Software Reference
Turbo PMAC Global I-Variables 166
The following table shows which variable corresponds to which card:
Ident
I-var
Servo
IC #
I4900
Bit #
Board DIP Switch
4,3,2,1 Setting
1
Board Base
Address
Board Setup
I-variables
Board Ident.
Info Address
2
I4910
2
2
0000 (0)
$078200
I7200 – I7249
$078F08
I4911
3
3
0001 (1)
$078300
I7300 – I7349
$078F0C
I4912
2*
12
0010 (2)
$078220
I7250 – I7299
$078F28
I4913
3*
13
0011 (3)
$078320
I7350 – I7399
$078F2C
I4914
4
4
0100 (4)
$079200
I7400 – I7449
$079F08
I4915
5
5
0101 (5)
$079300
I7500 – I7549
$079F0C
I4916
4*
14
0110 (6)
$079220
I7450 – I7499
$079F28
I4917
5*
15
0111 (7)
$079320
I7550 – I7599
$079F2C
I4918
6
6
1000 (8)
$07A200
I7600 – I7649
$07AF08
I4919
7
7
1001 (9)
$07A300
I7700 – I7749
$07AF0C
I4920
6*
16
1010 (10)
$07A220
I7650 – I7699
$07AF28
I4921
7*
17
1011 (11)
$07A320
I7750 – I7799
$07AF2C
I4922
8
8
1100 (12)
$07B200
I7800 – I7849
$07BF08
I4923
9
9
1101 (13)
$07B300
I7900 – I7949
$07BF0C
I4924
8*
18
1110 (14)
$07B220
I7850 – I7899
$07BF28
I4925
9*
19
1111 (15)
$07B320
I7950 – I7999
$07BF2C
Notes:
1. Board DIP-switches SW1-1 to SW1-4 are currently used to set the addresses of the boards on the UBUS
backplane. A 0 is ON (Closed); a 1 is OFF (Open). The E1 jumper on the back of the Acc-Ux UBUS
backplane board must be ON to use the DIP-switch addressing. SW1-5 and SW1-6 must be ON (Closed).
2. For diagnostic purposes only. The four Y registers starting at this address contain the information used to
assemble this I-variable.
I4910 to I4925 have multiple fields of information, which can be reported individually or in groups,
depending on the setting of I39. The following table shows what each field reports.
Information
Reported when:
Bits when I39=0
Bits when I39>0
Vendor ID
I39 = 0 or 1
0 – 7
0 – 7
Options
I39 = 0 or 2
8 – 17
0 – 9
Revision #
I39 = 0 or 3
18 – 21
0 – 3
Card ID
I39 = 0 or 4
22 – 35
0 – 13
Base Address
I39 = 5
--
0 - 18
 The Vendor ID field is an 8-bit value that reports the manufacturer of the board. Delta Tau boards
report a value of 1 in this field.
 Typically, the Options field is a 10-bit field that is used as a set of individual bits to report which
options are present on the board. The meaning of each bit is board-dependent.
 The Revision Number field is a 4-bit value that represents the design revision (0 to 15) of the board.
For Delta Tau boards, this value matches the x in the –10x part number suffix for the board.
 The Card ID field is a 14-bit value that represents the part number of the board. For Delta Tau
boards, this value matches the xxxx in the 60xxxx (decimal) main part number for the board.
 The Base Address field is a 19-bit value that represents the starting address of the board in the Turbo
PMAC’s address space.