5-15
DIMM Configurations
The 2156 system board has two DIMM sockets. A maximum of 256KB
memory may be installed.
You can install 16MB, 32MB, 64MB, or 128MB DIMM in any sockets and with
any combinations.
System Board Connector Pin Signals
Monitor Port Signals
Pin
Signal Name
I/O
Pin
Signal Name
I/O
1
Red Video
O
9
+5 V dc
N/A
2
Green Video
O
10
Synch Ground
N/A
3
Blue Video
O
11
No Connection
N/A
4
No Connection
N/A
12
Monitor ID Bit 1
I
5
Synch Ground
N/A
13
Horizontal Synch
O
6
Red Ground
N/A
14
Vertical Synch
O
7
Green Ground
N/A
15
Monitor ID Bit 3
I
8
Blue Ground
N/A
Serial Port Signals
Pin
Signal Name
I/O
Pin
Signal Name
I/O
1
Data Carrier Detect
I
6
Data Set Ready
I
2
Receive Data
I
7
Request To Send
O
3
Transmit Data
O
8
Clear To Send
I
4
Data Terminal
Ready
O
9
Ring Indicator
I
5
Signal Ground
N/A
Summary of Contents for Aptiva 2156
Page 1: ... Hardware Maintenance Service for Service Level A Machine Type 2156 2156 ...
Page 15: ...XIII ...
Page 16: ...XIV ...
Page 17: ...XV ...
Page 18: ...XVI ...
Page 19: ...XVII ...
Page 30: ...XXVIII ...
Page 31: ...XXIX ...
Page 32: ...XXX ...
Page 141: ...7 2 Assembly 1 Machine Type 2156 System Unit ...
