> TOS/360, as noted above, is essentially the same as DOS/360. Only if a tape is essentially the same as a disk!
TOS's code base was largely common with DOS, and the programming APIs were a subset -- but the SYSRES was on tape! Believe it or not. The equivalent of an S806 took about ten minutes: spinning the SYSRES tape looking for the program. Not IBM's most successful product, neither technically nor commercially. It shows how far we have come: once, disk was so expensive that people contemplated mainframes with no disk at all. Now, personal music players come with 4GB or more of storage. Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Shmuel Metz (Seymour J.) Sent: Monday, February 19, 2007 10:06 AM To: [email protected] Subject: Re: IBM S/360 series operating systems history >VSE - Missing very early history DOS/VSE and before. Not sure if >this is the same DOS and TOS as in the MVS history. DOS/360, DOS/VS and DOS/VSE are predecessors to VSE/ESA; there are several more after DOS/VSE, and I believe that they were VSE/AF and VSE/SP. TOS/360, as noted above, is essentially the same as DOS/360. ---------------------------------------------------------------------- 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
