[Simh] RT11 dists in RX02 floppy images and SIMH RY support

[Johnny Billquist]

On 2014-03-03 15:01, Jordi Guillaumes i Pons wrote:
> Hello,
>
> Both in trailing-edge.com and in bitsavers there are some floppy images that should contain the RT-11 5.4g kit. I have tried to use those images in simg and I get:
>
> - A system crash when I try to boot from them, attaching the disks to RY0 (the crash is due to an attempt to execute at address 0).
> - A "directory read error" when I try to read them from a running RT-11 5.03 system.
>
> I wonder if the disk images are corrupted, or the RX02 support in simh is broken. Has anybody tried to read those images with any kind of success?

I have no idea about this specifically, but it is worth remembering that 
DEC did interleaving at the software level of these disks, so it might 
be that an image of the floppies gets this wrong... You need to know how 
the copies were made, and how simh treats them.

	Johnny