[Intel-devsys] irmx-80 diskettes
Bill Beech (NJ7P)
nj7p at nj7p.info
Fri Aug 16 12:27:35 MDT 2019
On 8/15/2019 4:19 PM, Herb Johnson wrote:
> Thanks Bill, this is very comprehensive. A few comments.
> You might do the easy thing first: read off the single-density disks.
> YOu could do that in CP/M on a CP/M box, or with Dunfield's imagedsk
> on an MS-DOS box. In any event you can verify the disk scheme.
Ah, but how do I connect an 8-inch disk to a DOS box. I have done it in
the past and may need to do it again. I have one DSDD 8-inch drive and
power supply that I could patch together to interface with the the
AH-1520 FDC that works with the Dunfield imagedsk. May need to use an
SCSI HD on that controller. We will see.
> DD M2FM is harder. But you might ask Mark Ogden about it. (now this
> conversation is in the Intel-dev list, Mark can speak for himself.)
Jump in there, Mark. My idea would be to write a program to transmit an
Intel hex file for each track to the PC.
> He's created a lot of files from Intel disk sources. He's rewritten
> Dunfield tools to run under Windows. He may have a tool to run under
> ISIS, or be willing to write one.
I will check these out.
> Unpacks an isis .imd or .img file into the individual files.
> Supports ISIS II SD, ISIS II DD, ISIS III and ISIS IV
> There is an old CP/M program to read ISIS diskettes, look in the
> CPMUG. I retrieved it decades ago to read DEC RT-11 diskettes. (And I
> did tonight, it's in CPMUG #1. I'll zip it up and send it to Bill.)
> No hurry on this, Bill of course, you have a full plate.
So many projects, so little time!
> On 8/15/2019 5:38 PM, Bill Beech (NJ7P) wrote:
>> Indeed I have 5 each 8-inch disks here for RMX/80.
>> They are:
>> 9500013-03 Ver 1.3, RMX/80 Real-time Multitasking executive for iSBC
>> 80/20 and 80/20-4, SD.
>> 9500018-03 Ver 1.3, RMX/80 Real-time Multitasking executive for iSBC
>> 80/10, SD.
>> 9700016-03, Ver 1.3, RMX/80 Real-time Multitasking executive for iSBC
>> 80/20 and 80/20-4, DD.
>> 9700020-03, Ver 1.3, RMX/80 Extensions for iSBC 80/10, iSBC 80/20,
>> 80/20-4, and 80/30, DD.
>> 9700021-03, Ver 1.3, RMX/80 Real-time Multitasking executive for iSBC
>> 80/10, DD.
>> The SD disks should not be hard to copy. The DD may be trickier. I
>> suspect they are in 3740 format SD but M2FM format DD. I suspect I
>> will need to write a program for the MDS II to create an image file
>> on the PC. I need to think about it some more, once I get the other
>> board for Jon H. done and both tested. And I need to get some
>> simulators to compile again and run, at least as far as the monitors
>> are concerned. I also need to get versions of CP/M-80 to run on the
>> OEM simulators. I also have several books I have collected to scan.
>> So my queue is pretty full!
>> On 8/15/2019 9:34 AM, Herb Johnson wrote:
>>> Biil, someone asked me about 8-inch diskettes with iRMX-80 on them.
>>> Of course I don't have them. So I started looking around for this.
>>> This doesn't seem to be available "on the Web" or among the
>>> intel-dev archives.
>>> I searched your Intel Google Drive and then the archive of our
>>> Intel-dev discussion, for mention of iRMX-80. The only significant
>>> mention is your Sept 2018 purchase of five iRMX-80 diskettes from
>>> eBay. I didn't find subsequent email traffic on your results with
>>> those diskettes. And I don't see any iRMX80 disk images in any of
>>> the by-person folders in your Google drive. I checked Mark Ogden's
>>> gethub; no iRMX80 stuff there. One other reference but it seems a
>>> dead end. I'll detail it as a PS.
>>> Bill, it is still a good "find" to have disks with iRMX-80. Thanks
>>> for spending the $$$ to get them. I know doing work is tough for
>>> you; there's no priority for this just because somebody asked me
>>> about it. But what's the status of those physical diskettes, and
>>> were you able to image them in some fashion?
>>> Regards, Herb
>>> PS: Jon Hales did something with a bunch of Intel diskette
>>> label-descriptions posted around Aug 2018. Mark Ogden commented
>>> about the list, and mentioned this:
>>> 950017.06 looks like irmx80 v2.4
>>> I have no idea what Jon was doing. But I could not find a disk-image
>>> with that 950017.06 designation.
More information about the Intel-devsys