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OLD CS1

Myarc DDCC-1 jumpers and switches

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You might want to experiment with DSKU as well. It was tuned for the Myarc controllers--and I believe it has the option to format both 16 and 18 sectors per track.

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Resurrecting this thread because the question relates to the DDCC-1.  I was poking around tonight and found a few subprograms in the DSR, including DIR.  Guess what happens when I type CALL DIR(1) !!

 

I cannot find that documented, so I wonder if that is in the original DSR or if it is part of the 80-track ROMs?

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1 hour ago, OLD CS1 said:

Resurrecting this thread because the question relates to the DDCC-1.  I was poking around tonight and found a few subprograms in the DSR, including DIR.  Guess what happens when I type CALL DIR(1) !!

 

I cannot find that documented, so I wonder if that is in the original DSR or if it is part of the 80-track ROMs?

I do think it's part of the 80 track upgrade.  I pulled out my original DDCC-1 manual and there is no mention of it.

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I mentioned that several times ("favorite controller", search the forum for CALL DIR).

 

Edit: Try it in MAME.

Edited by mizapf

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The DDCC-1 offers CALL FILES, CALL LLR, CALL ILR, CALL LR, and CALL DIR by its original DSR.

 

I'm not sure how I learned about them; I got a HFDC before, and maybe I correctly assumed that they would offer the same subprograms. The HFDC manual describes all of them ("Additional commands supported by HFDC").

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5 hours ago, mizapf said:

I mentioned that several times ("favorite controller", search the forum for CALL DIR).

 

Edit: Try it in MAME.

Like sands through the hour glass :)

 

2 hours ago, mizapf said:

The DDCC-1 offers CALL FILES, CALL LLR, CALL ILR, CALL LR, and CALL DIR by its original DSR.

 

I'm not sure how I learned about them; I got a HFDC before, and maybe I correctly assumed that they would offer the same subprograms. The HFDC manual describes all of them ("Additional commands supported by HFDC").

Ah, I had not made the connection between the HFDC and the DDCC-1, other than the Geneve docs say the former can handle 1.44MB floppies.  I am going to pull up the docs so I can see what those others do.

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Reading the HFDC docs, I really wish the WHT SCSI implemented DSK emulation like in its docs.

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People may think about Myarc whatever they like, but the DDCC-1 is running rock-solidly here for 25 years now.

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The CALL DIR statement is enough to make it killer for me.  Now, if it allowed me to catalog my SCSI drive like the HFDC does, it would be complete.  That said, the one thing my BwG has over it is the clock.

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I first thought that you can provide a string to CALL DIR in the DDCC-1 (because it did not complain), but in fact it ignores invalid arguments and takes the last drive number that you used.

 

So when you do a CALL DIR(2), all subsequent CALL DIR("DSK2"), CALL DIR("DSK1"), CALL DIR("WHAT.EVER"), CALL DIR() lists drive 2.

 

CALL DIR of the HFDC can correctly parse a given path.

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Possible.  I have only tried with an actual number and "SCS2" and "SCS2.GAMES".  The latter two return INCORRECT STATEMENT.  It also appears that any error, like a disk not in the drive, returns that error.

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3 hours ago, OLD CS1 said:

Possible.  I have only tried with an actual number and "SCS2" and "SCS2.GAMES".  The latter two return INCORRECT STATEMENT.  It also appears that any error, like a disk not in the drive, returns that error.

I might be misunderstanding what you are attempting, that said the CALL DIR() is specific to the card it is called from, i.e., you cannot catalog a SCSI drive using the HFDC's call DIR subprogram.   The SCSI DSR does not incorporate a CALL DIR into its programming.  :(

 

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It was a wish.  It makes sense to me that you cannot have two DSRs running at the same time.  At least, that is how I see how this would work.

 

The HFDC manual is interesting, especially the PAB extension for loading into CPU RAM rather than VDP RAM.  I doubt that was ported to the DDCC-1, especially since the documentation is just add-on to the TI controller docs.

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Hi, as I had a lot of confusion today with my "slider" style DIP switch, here´s my result:

 

 

Myarc-DDCC-1-DIP-Switch-Slider--RMS-2-ZoomOut.thumb.JPG.66340a766b853a4b4643eb7baf6686da.JPG

 

 

BTW, any idea what the version written on the EPROM could mean ? I cannot interpret that one letter.

Should I do an update ? thanks

 

 

 

 

 

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9 hours ago, Schmitzi said:

BTW, any idea what the version written on the EPROM could mean

@atrax27407 may know the answer as he has quite an extensive library of EPROMs.  I do not recognize the checksum offhand; so long as it is the most recent 40-track eprom, you should have both 16- and 18-sector/track support. 

 

One upgrade you may want to consider is the 80-track EPROM, which allows you to also use double sides/double density/80 track disks for up to a maximum of 2880 sectors. 

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There are two EPROMs that I have. Both are designated as "V15". There are two variants - regular and the 80-trk version. There is a later version -"V18" - developed by Michael Becker but I haven't seen it and don't have a copy.

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I think it´s "F.03E", because I found an older pic from the Dude  🕵️‍♂️

 

MyArc-FDC-DDCC-mdude-01.thumb.JPG.235860bf2976a14715b217db5c7ae895.JPG

 

And this looks similar:

 

grafik.thumb.png.f0039ba3cf37bbae6b23700f61c53bb5.png

 

 

 

@atrax27407  Is this the chip where I need that adapter (TMS2532/2732) to read it out ?

 

 

 

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No adapter needed, as it looks like the chip is a standard 2764. You should be able to read it out using the EPROM burner of your personal choice (or in system using the Australian DSR reader that @atrax27407 put up a few years ago. . .).

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