On Sun, Aug 13, 2023, 10:20 AM Nigel Johnson Ham via cctalk < cctalk@classiccmp.org> wrote:
> On 2023-08-13 12:18, Warner Losh via cctalk wrote: > > On Sun, Aug 13, 2023, 10:11 AM Chuck Guzis via cctalk< > cctalk@classiccmp.org> > > wrote: > > > >> On 8/13/23 08:39, Nigel Johnson Ham via cctalk wrote: > >> > >>> You've amplified my point, Fred! When I saw the abomination of > >>> cross-over selects in the cables in the IBM PC, I knew the need for > >>> Field Service Engineers was coming to an end! > >>> > >>> I don't believe anything on Wikipedia anymore. When I saw them say > that > >>> there is no such thing as a legal definition for a pint of beer in > >>> Canada, I got an actual legal definition from the Federal Government, > >>> created an account on wikipedia, and put in the correct legal > definition > >>> with a reference to the law. (It's 568.26 ml btw - make sure you get > >>> that last .26ml :-) ) > >>> > >>> I week later it had been changed back to the previous text, and I could > >>> not get in to correct it! > >> You should see the "interesting" cabling for getting three drives on a > >> PC controller, using only one cable. Several ISA SCSI and ESDI > >> controllers could accommodate this on their floppy section.. > >> > >> At least one DTC controller allowed for running 4 drives the way Al > >> Shugart intended--common motor, different drive selects. > >> > > The DEC Rainbow did that... insert rx50 disclaimer... I did it with 2 > teac > > drives that both spun on any access > > > > and some early NEC computer I saw at computer land iirc... or maybe the > > latter just kept the drives spinning > > > > Warner > > > > --Chuck > >> > >> > The DEC Rainbow RX50s only have one motor :-) > True.. but if you put a pair of teac fd55f drives, suitably jumpered, they both came on... and could do double sided media... Though in the dual setup mode, only one of the rx50s would spin up... so maybe not as true for that reason. Warner -- > Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU > Amateur Radio, the origin of the open-source concept! > Skype: TILBURY2591 > >
