On 26-Jun-15 13:43, Hittner, David T (IS) wrote: > > What PDP-11 used TU58’s, and what controller did the drive connect to? > > > > Dave > 11/23, 11/44, VT103, HSC50 -- among others.
Host: Any RS232/423 (dumb) interface, e.g. DL(V)11, MXV11. 9600 - 38400 BPS using a packet protocol (RSP, IIRC) with XON/XOFF flow control The drive itself has an embedded 8085 CPU that is the real controller. It's not terribly smart. The protocol is roughly similar to MSCP (lighter-weight); the tape is block-addressable, normally the 512 byte DEC standard block, although there's a 128 byte record mode for dealing with buffering/comm issues. Normally the controller assembles 4 records to make a block. Cartridge is formatted with 512 blocks of 512 bytes each (0.25 MB). http://bitsavers.trailing-edge.com/pdf/dec/dectape/tu58/ has the docs. This communication may not represent my employer's views, if any, on the matters discussed. > > > *From:*Simh [mailto:[email protected]] *On Behalf Of > *Bill Cunningham > *Sent:* Friday, June 26, 2015 1:14 PM > *To:* Hans-Ulrich Hölscher; [email protected] > *Subject:* EXT :Re: [Simh] TU58 device for PDP-11s > > > > > > ----- Original Message ----- > > *From:*Hans-Ulrich Hölscher <mailto:[email protected]> > > *To:*[email protected] <mailto:[email protected]> > > *Sent:*Friday, June 26, 2015 12:56 PM > > *Subject:*[Simh] TU58 device for PDP-11s > > > > Am I right that there is currently no TU58 device available for > the PDP-11 series of computers? > > > > If so, would someone be so kind as to implement it? > > > > Thanks in advance to all programmers who ponder on evetually doing it! > > > > Regards, > > > > Ulli > > > > > I don't know about simh, but there are several simulators out > there. There is something for linux too. But it sounds like a > worthy cause. > > > > Bill > > > >
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