IO-PCB Mask
The following shows the IO-PCB Mask fields provided by IBM mainframe’s IMS/DC. It includes the field lengths and support status in the OSI product.
| Descriptor | Length (Bytes) | Support |
|---|---|---|
Logical terminal name |
8 |
Supported |
Reserved for IMS |
2 |
Supported |
Status code |
2 |
Supported |
Local date and time |
4 (Date) + 4 (Time) |
Supported |
Input message sequence number |
4 |
Not Supported |
Message output descriptor name |
8 |
Supported |
Userid |
8 |
Supported |
Group name |
8 |
Not Supported |
Time Stamp |
4 (Date) + 6 (Time6) + 2 (UTC Offset) |
Not Supported |
Userid Indicator |
1 |
Not Supported |
Reserved for IMS |
3 |
Supported |