BITMAP records

The BITMAP records represent the PTFs applied in the target zones or received in the GLOBAL zone that are associated with the FMIDs listed in the PRODLIST record.

The BITMAP bitstring logic is based on the following PTF naming convention:

PTF names are architected by IBM® to consist of a 2 character prefix followed by 5 decimal digits providing 100000 possible PTF numbers per prefix (00000-99999).
A BITMAP bitstring record simply contains 100000 bits and a 2-character PTF prefix in the record header.
For example, if the prefix is "UR", then the first bit in the bitstring represents PTF UR00000, the second bit represents PTF UR00001, the third represents PTF UR00002 and so on. The last bit in the bitstring represents UR99999.
The bits representing the URnnnnn PTF numbers received or applied on the customer system are turned on while the remaining bits are set to zero.
One bitstring is required for each PTF prefix in the SMPCSI

Following is the definition of the BITMAP records that are placed in the output data set by GIMXTRX.

Field: Description
header: 60-byte header starting with the literal "BITPTF" in uppercase, followed by the 2-character PTF prefix for each unique PTF prefix present in the zones being queried. This field is in uppercase. The remaining 52 bytes in the header are set to blank.
bitstring: 12500 bytes with 100000 bits representing PTF numbers present in the SMPCSI associated with the two-character PTF prefix in this record. A bit is set on to indicate a PTF number exists. All remaining bit positions are set to zero.

The following example of a BITMAP bitstring record indicates an SMPCSI that has PTFs UR00001 and UR00005 present.

Figure 1. BITMAP record

         1         2         3         4         5         6         7         8
----+----0----+----0----+----0----+----0----+----0----+----0----+----0----+----0

BITPTFUR                                                    bitstring...........

The bitstring section of the BITMAP record is expanded as follows (where each mark of the scale line represents one bit position of the BITMAP record):

Figure 2. Bitstring section of BITMAP record

6       6       6       6       6       6       6       6       6       7
1-------2-------3-------4-------5-------6-------7-------8-------9-------0

010001000000000000000000000000000000000000000000.........................