> John Summerfield wrote: > > > > > Not quite - the key for this purpose is included in the length of the > > data block. > > > > (65535 * 255 * 65535) is still fairly large. More than 2.3 Gbytes. > > > > > Don't think so. CKD stands for count,key,data. Each record on a track > has a count area, optional key area and optional data area. > The format of an 8-byte count area is CCHHRKDD > CC is a 16 bit cylinder number, HH is a 16 bit head number, R is a 8 > bit record number, K is a 8 bit key length and DD is a 16 bit data > length. The data length does not include the key length.
The data length in the channel program is the total length of the data transfer. Back when, you could get round it in excp, but I don't think other access methods such as BDAN and BSAM would hand it. -- Cheers John Summerfield Microsoft's most solid OS: http://www.geocities.com/rcwoolley/ Note: mail delivered to me is deemed to be intended for me, for my disposition. ============================== If you don't like being told you're wrong, be right!
