On Thu, 26 Jun 2008 11:48:35 -0500, Thomas Kern <[EMAIL PROTECTED]> wrote:
>For programs inside a virtual machine that use standard CMS TAPEIO macros >for their I/O, you can create a nucleus extension that intercepts the tape >I/O and transforms it in some way. > My recollection, ancient, fuzzy, and perhaps outdated, is that while one could successfully intercept TAPEIO with an nucleus extension and successfully manipulate tapes with an assembler program, many utility commands such as TAPE issued a DIAG that failed unless a real tape was mounted before proceeding to use TAPEIO for the bulk of the transfer. In about the same era, I had similar problems ATTACHing a real printer to 00E -- the CMS print command issued a CP CLOSE that failed. -- gil ---------------------------------------------------------------------- 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
