On 9 Sep 2009 07:39:14 -0700, in bit.listserv.ibm-main you wrote: >> -----Original Message----- >> From: IBM Mainframe Discussion List >> [mailto:[email protected]] On Behalf Of Paul Gilmartin >> Sent: Wednesday, September 09, 2009 9:23 AM >> To: [email protected] >> Subject: Re: z/OS 1.11 (and COBOL 4.2) new features summary >> >> On Wed, 9 Sep 2009 06:44:40 -0600, Steve Comstock wrote: >> > >> >* New FILEDATA type for z/OS UNIX files: FILEDATA=RECORD >> > creates files with each record having a four >> > byte prefix (x'00' followed by three byte >> > record length) >> > >> Of course, this is incompatible with a similar facility in FTP, >> isn't it? Sigh. Conway's law strikes again. >> >> -- gil > >Yeah - why IBM didn't make FILEDATA=RECORD have the same format as VB really >upsets me. This new one basically prefixes a logical record with a fullword >length in the range of 0..1677215 instead of VB's LLBB (where BB is usually >x'0000'). <sigh>
Given the length of some open system records, 16 meg is a big improvement over 32K(take a look at the size of an average JPEG let alone TIFF graphics) but I think that it probably is too small for the future. Calculate the size of a RAW format picture on a 24 megapixel camera. Data size has grown over the years and we have outgrown the 1960's record and blocksize limitations. > >Luckily, the Co:Z "fromdsn" command can be used to create records in this >format. > >fromdsn -p 0x00 -l rdw legacy.dsn >unix.file ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
