How do you emulate an input hopper? The 3540 wasn't a simple 8" floppy drive; it had a feeder so you could read a string of diskettes with no manual intervention between them.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [[email protected]] on behalf of Tony Thigpen [[email protected]] Sent: Wednesday, May 13, 2020 11:35 AM To: [email protected] Subject: Re: An older device query - still using?? The 4331 had an internal diskette drive (accessed from the top of the cpu) that emulated a 3540. It was the same drive as used for IML. We also had one attached to our System-3/15D. Tony Thigpen R.S. wrote on 5/13/20 10:55 AM: > Excuse me, what is IBM 3540? > This is mainframe forum so I checked all historical DASD, including drum > device and 2305 (which is not a drum) and found no such device. I also > reviewed disks for small systems (S3 System 32, System 34... AS/400) and > still no such device. Finally I found ~500MB SCSI attached 3,5" disk > with such number. > However I still don't know what is 3540. Any clue? > > > Update: I found it. It is diskette (yes, 8" floppy diskette drive). > Where can I find the reference about it? In new shining z/OS 2.4 JCL > Reference! > > Wow! > > > So, I dare to ask about this "still supported" device: > Was it Bus & Tag attached? > What parameters has the diskette? capacity, cylinders #, track length... > How it was recognized by operating system? Was it another DASD volume? > Every diskette was separate volume as tape cart? > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
