[Coco] Sdc question

[Barry Nelson]

I have my command ALMOST working. Here is the help output.

{N2|04}/DD/SOURCES/SDC:sdc
Usage: sdc /sd0|/sd1 [-|SDC command]

The SDC commands are string formated as follows:

"-"           - list mounted images
"M:filename"  - mount an image
"N:filename"  - create an image
"D:dirname"   - change directory
"L:dirname"   - print directory
"K:dirname"   - make a directory
"X:name"      - delete a file or directory

The SDC also supports a Rename command (R:), however this command is NOT
supported at this time.
ERROR #001

{N2|04}/DD/SOURCES/SDC:

The problem I have is I tried to use the getstt method of communicating with the sdc. It ALMOST works, the only problem I currently have is if there is no sdc disk mounted in either sd0 or sd1 I get an error 246. I am opening /sd0@ or /sd1 at . Does anyone know how I can open the device if there is no disk in it?

To answer your question, I tested the command
sdc /sd0 X:TEMP.DSK
and it deleted the disk image file TEMP.DSK.

Now if I can just get it all to work without any disk mounted…

On May 25, 2015, at 10:58 PM, coco-request at maltedmedia.com wrote:

> Date: Mon, 25 May 2015 13:25:48 -0700
> From: "K. Pruitt" <pruittk at roadrunner.com>
> To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
> Subject: Re: [Coco] Sdc question
> Message-ID: <005801d09729$02405c10$0200a8c0 at Desktop1>
> Content-Type: text/plain; format=flowed; charset="utf-8";
> 	reply-type=original
> 
> 
> ----- Original Message ----- 
> From: "Barry Nelson"
> Sent: Monday, May 25, 2015 5:59 AM
> Subject: Re: [Coco] [SPAM] Sdc question
> 
> 
>> FYI, apparently there IS a low level command supported by the CoCo SDC for 
>> deleting a file or directory. Currently it is not accessible from SDC-DOS, 
>> however, YA-DOS supports a low level interface to the SDC that will do 
>> this.
>> 
>> The SDC commands are string formated as follows:
>> 
>> "M:filename"  - mount an image
>> "N:filename"  - create an image
>> "D:dirname"   - change directory
>> "L:dirname"   - print directory
>> "K:dirname"   - make a directory
>> "X:name"      - delete a file or directory
>> 
>> The SDC also supports a Rename command (R:), however this command NOT
>> supported by YA-DOS at this time.
>> 
>> YA-DOS is downloadable from https://sites.google.com/site/cocoboot2/ya-dos
>> You can only access these commands in YA-DOS, not SDC-DOS. You could 
>> install YA-DOS in one of the 8 flash rom slots in the CoCo SDC like I did.
>> 
>> I already have support under NitrOS9 for mounting and displaying a 
>> directory of the SDC card using the commands sdir, and sdrive. I had to 
>> patch sdrive to support using the CoCo SDC in slot 4 of my multi-pak, but 
>> I have it working now. Since internally, sdrive sends these api strings to 
>> the SDC, I should be able to make sdel, smkdir, and snew commands for 
>> NitrOS9 also. The sdrive program I patched says it was written by Tim 
>> Linder. My patch just adds this code to the start of the CmdSetup 
>> subroutine right after the first instruction in that routine, which is 
>> pshs x,a.
>> 
>>   lda #$33
>>   sta $FF7F
>> 
>> This selects Multi-Pak slot 4.  When I finish I'll probably upload a disk 
>> to the coco archive, then you'll be able to do what you are asking for 
>> from NitrOS9 also. :)
>> 
>> 
>> 
>> On May 24, 2015, at 4:18 PM, coco-request at maltedmedia.com wrote:
>> 
>>> Date: Sun, 24 May 2015 06:41:30 -0700
>>> From: Steve Batson
>>> Subject: Re: [Coco] [SPAM]  Sdc question
>>> Message-ID:
>>> <185E2675-84D6-4808-9880-1F675AAA7DE5 at batsonphotography.com>
>>> Content-Type: text/plain; charset=windows-1252
>>> 
>>> The Documents I've seen talk about manipulating the files on the PC with 
>>> a card reader. The Only CoCo Commands I see allow viewing and changing 
>>> directories as well as mounting the .dsk files. I have seen no CoCo 
>>> commands that let you manage the files and folders from the CoCo.
>>> 
>>> The card reader is the only option I see.
>> 
>> 
>> -- 
> 
> Barry,
> 
> Does the "X:name" command delete a file within a disk image, or can this be 
> used to delete the disk image itself?
> 
> Thanks for your work in this area.  Having more control over the SDC under 
> NitrOS9 will be nice.