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PPS> FORMAT A:\DOUBLE.BYT (O.FFFH)
LO ICAL UNIT <BIT = l->NIBBLE = 2->BYTE = 3iN-BYTE = M)
LU = 3
INPUT BLOCKSIZE (N BYTES)
N = 2
OUTPUT BLOCKSIZE <N BYTES)
N = 1
INPUT BLOCK STRUCTURE:
NUMBER OF INPUT LO ICAL UNITS = 002
LSB
lOD lOl I
NUMBER OF OUTPUT LO ICAL UNITS = 001
OUTPUT SPECIFICATION (<CR>) TO EXIT) :
«
Comments
In this example, a file called DOUBLE.BYT is split into two files, with alternate bytes being
loaded into alternate files. After establishing the FORMAT command and the file name with
the first entry, the i
S prompts for the logical unit that is going to be manipulated. Byte is
selected as the logical unit. You are then prompted to set up the input block size (in this case
two bytes) and the output block size (one byte). A diagram of the input block structure is then
displayed with the logical units labeled. The least significant bit in the input block is displayed
with the logical units labeled. The least significant bit in the input block is shown on the left.
The number of logical units in the output block is also displayed. You are then prompted with
an asterisk (*) to enter the output specification.
4-6
Example Programming Session
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