Hello Mark, I attached the patch, it is against SIMH v3.7 from around 2008.
If you want me to clean it up and get it working against the latest SIMH, let me know. I probably won't be able to get to it for a couple months, so I'm attaching the patch in case someone else wants to take a stab at it. Looking briefly at the patch, it seems that I put most of the changes under #USE_IMD. Since sim_imd.* has been promoted and is part of the main SIMH distribution now, those #ifdefs can probably be removed as long as the functionality is ok. -Howard -----Original Message----- From: Mark Pizzolato - Info Comm [mailto:[email protected]] Sent: Sunday, March 8, 2015 4:42 AM To: Howard M. Harte; 'Alan Frisbie'; [email protected] Subject: RE: [Simh] DEC floppy disk interleave questions On Saturday, March 7, 2015 at 6:15 PM, Howard M. Harte wrote: > Dave Dunfield's ImageDisk (.IMD) format can preserve the floppy disk > metadata. He has some DEC disk images in this format on his site: > http://www.classiccmp.org/dunfield/img/index.htm > > When I implemented several floppy disk controllers for the > SIMH/AltairZ80 simulator several years ago, I wrote a module for SIMH > called sim_imd which can utilize the ImageDisk format within SIMH. At > that time, I had a patch to make it work as an alternate to the flat > file format that is normally used for SIMH for the pdp_rx disk > controller. I tested sim_imd with the PDP-11 RT11 disk image from Dave's > site, and it worked fine. The sim_ind.c module has since been used by several other simulators beyond the AltairZ80. sim_imd.c & sim_imd.h are now located in the top level of the simh github repository. I've never seen any patch for the pdp11_rx.c device but would be happy to consider it. Please see if you can dig it up and pass it along. Thanks. - Mark
pdp11_rx_imd.patch
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