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Hex Dec Type/Val Lng Label (dup) Comments
---- ---- --------- ---- -------------- --------
0000 0 Structure LCDA Locate data area
0000 0 Bitstring 8 LCDAREA (0) Locate data area
Byte 0 (Operation byte)
Although defined as BITs, the contents of the
operation byte are, architecturally, multiple
codes.
0000 0 Bitstring 1 LCDOP Operation byte
.... .... LCDZEROS X'00' LCDZEROS Operation byte,
bits 0 - 3
.... 1111 LCDOOC X'0F' Operation byte, bits 4
through 7 ------- Codes for use
with LCDOOC
.... ...1 LCDOCWD X'01' Write data
.... ..1. LCDOCRR X'02' Read Replicated Data
.... .1.. LCDOCFD X'04' Format defective block
.... .1.1 LCDOCWC X'05' Write and Check Data
.... .11. LCDOCRD X'06' Read data -------
Byte 1 (Locate Replication Count)
0001 1 Bitstring 1 LCDRPCNT Replication count
Bytes 2 and 3 (Block Count):
Block count is the number of addressable blocks
to be processed.
0002 2 Bitstring 2 LCDBKCNT Block count
Bytes 4 through 7 (Block address):
Block address is the addressable block number of
the first block to be processed in the data space.
0004 4 Bitstring 4 LCDBLOK Block address
Length equates
00000008 LCDBSIZE *-LCDAREA Size of LCDA in bytes
00000001 LCDSIZE ((*-LCDAREA)+7)/8 Size of LCDA in
DWs
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