________________________________________ From: cctalk [cctalk-boun...@classiccmp.org] on behalf of Don North via cctalk [cctalk@classiccmp.org] Sent: Friday, April 21, 2017 10:13 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: TU-58 in simh
On 4/21/2017 6:55 PM, allison wrote: > On 04/21/2017 09:34 PM, Don North via cctalk wrote: >> On 4/21/2017 4:25 PM, Brian L. Stuart via cctalk wrote: >>> I've seen suggestion that TU-58s are emulated in simh on >>> PDP-11s. However, I'm not seeing it in a show dev and my >>> google-fu is failing me to find any info on how to use it. Any >>> pointers on how to boot from a TU-58 image? >>> >>> TIA, >>> BLS >>> >> Using simh v4.0 from github, in the PDP11 simh ini file: >> >> *set tdc enable** >> **attach tdc0 tu58.dsk* >> >> then assuming tu58.dsk is a bootable image: >> >> *boot tdc0* >> >> Only two units 0,1 are supported (just like a real dual drive) and the >> images must be 262,144 bytes in size (like a real tu58 cartridge). >> > I remember TDC was DECcassette (TU-60). > > The boot for RT-11 would be BOOT DD: the tape image should be built > with a DD driver or DDX for RT11XM. > Least that how it works for my physical PDP-11/23 RT11 system. > Generally all the files that should be on > a RT11 floppy needs to be on the tape. > > For other OSs it first has to fit on the device and have a suitable > driver for TU58. > > Allison > TU58 is really not much useful for running any real DEC OS other than XXDP, to run diagnostics; that is what I use it for on my 34 and 44 (real hardware). I don't use TU58 at all under SIMH (does not make much sense). RT-11SJ works running from TU58, but just barely, and it is not really usable. RT11 is barely usable once you move up to a dual drive RX02. _______________________________________ Well, I can't agree with that. I used an LSI-11 with 4 RX02 drives running RT-11 to develop COBOL programs back in the early 80's. It was slow, but that is what coffee breaks were for. bill
