Should have added - a PDS directory block is a keyed block.? So with one directory block, a track will look like:
- Directory CKD record
- Directory Key record - with the high member name in the following block
- Directory Data block - 256 bytes
- Directory EOF marker
- First data block of a member
etc
?
Each of those will have error correcting information and then be rounded up to a multiple of ??? bytes.? I forget the exact value of ??? - maybe 32 .? It's in a manual somewhere.?
?
James Campbell
