43xx series had an 8 inch floppy drive for IML. I had a drive taken out of a 4341 by a mate who was an IBM CE. It was a vain hope that I might be able to use it on a Zilog based machine. That was in 1980.
I tend to hang on to historical artefacts. I have 8" floppies with ancient CP/M tools in my garage. Never saw a 12" floppy but plenty of 12" LPs . Off topic but I have a complete "Learn Japanese" set of 78 RPM discs. The style of Japanese would probably be unknown to the current generation. Like the substitution of D for T in US/Australia pronunciation. Sadderday for Saturday, communidy for community. Sad.. On Sat, Jul 13, 2024 at 3:27 AM Schmitt, Michael <[email protected]> wrote: > They're 12" if you measure the sleeve /diagonally/ > > 😊 > > -----Original Message----- > From: IBM Mainframe Discussion List <[email protected]> On Behalf > Of Phil Smith III > Sent: Friday, July 12, 2024 12:19 PM > To: [email protected] > Subject: Re: Mainframe history - 12 inch floppies? > > Some Googling suggests that there really were no 12" floppies. I suspect > if you grew up with late "hard" floppies, 8" look enormous, are easily > mistaken for 12"! > > -----Original Message----- > From: IBM Mainframe Discussion List <[email protected]> On Behalf > Of Ed Jaffe > Sent: Friday, July 12, 2024 8:51 AM > To: [email protected] > Subject: Re: Mainframe history - 12 inch floppies? > > On 7/11/2024 9:00 AM, Radoslaw Skorupka wrote: > > I just found information in some book that IBM mainframes used 12 inch > > floppy diskettes. Late 70's. > > > > Anybody heard about such diskettes? > > > When I first set foot in an IBM-mainframe computer room, the CPU and > peripherals used 8"floppy diskettes for loading the internal code. > > I never saw a 12" floppy diskette used. > > > -- > > Phoenix Software International > Edward E. Jaffe > 831 Parkview Drive North > El Segundo, CA 90245 > https://www.phoenixsoftware.com/ > > > > -------------------------------------------------------------------------------- > This e-mail message, including any attachments, appended messages and the > information contained therein, is for the sole use of the intended > recipient(s). If you are not an intended recipient or have otherwise > received this email message in error, any use, dissemination, distribution, > review, storage or copying of this e-mail message and the information > contained therein is strictly prohibited. If you are not an intended > recipient, please contact the sender by reply e-mail and destroy all copies > of this email message and do not otherwise utilize or retain this email > message or any or all of the information contained therein. Although this > email message and any attachments or appended messages are believed to be > free of any virus or other defect that might affect any computer system > into which it is received and opened, it is the responsibility of the > recipient to ensure that it is virus free and no responsibility is accepted > by the sender for any loss or damage arising in any way from its opening or > use. > > ---------------------------------------------------------------------- > 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 > > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > -- Wayne V. Bickerdike ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
