MVME5100 Single Board Computer Programmer's Reference Guide

Vendor/Device Register
Address $FEF80000
Bit 0
Name
VENDID DEVID
Programming Model
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Operation READ ONLY READ ONLY
Reset $1057 $4803
VENDID This read-only register contains the value $1057. It is the
vendor number assigned to Motorola Inc.
DEVID This read-only register contains the value $4803. It is the
device number for the Hawk.
Revision ID/General Control Register
Address $FEF80008
Bit
Name
REVID
Operation
Reset
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
0
0
0
0
0
0
0
tben_en
R
R
R
R
R
R
R
R/W
X
X
X
X
X
X
X
0 P
READ ONLY
$01
0
0
0
0
0
0
aonly_en
isa_hole
0
0
0
0
pu_stat0
pu_stat1
pu_stat2
pu_stat3
R
R
R
R
R
R
R
R/W
R
R
R
R
R
R
R
R
X
X
X
X
X
X
V P
0 PL
X
X
X
X
V P
V P
V P
V P
tben en tben_en controls the enable for the p1_tben and p0_tben
output signals. When tben_en is set, the I 2 clm_ input pin
becomes the p1_tben output pin and the ercs_output pin
becomes the p0_tben output pin. Also, the SMC does not
respond to accesses that fall within the external register
set address range except for the address $FEF88300.
When tben_en is cleared, the I2clm_ and ercs_ pins retain
their normal function and the SMC does respond to
external register set accesses.
http://www.motorola.com/computer/literature 3-39
3