Initial import of SDFS module

.gitattributes

+hdr/** gitlab-language=armasm linguist-language=armasm linguist-detectable=true
+s/** gitlab-language=armasm linguist-language=armasm linguist-detectable=true
+c/** gitlab-language=c linguist-language=c linguist-detectable=true
+h/** gitlab-language=c linguist-language=c linguist-detectable=true
+cmhg/** gitlab-language=cmhg linguist-language=cmhg linguist-detectable=true

LICENCE

+All files in this distribution are released under the
+Common Development and Distribution License (CDDL).
+
+--------------------------------------------------------------------
+
+COMMON DEVELOPMENT AND DISTRIBUTION LICENSE Version 1.0
+
+1. Definitions.
+
+    1.1. "Contributor" means each individual or entity that creates
+         or contributes to the creation of Modifications.
+
+    1.2. "Contributor Version" means the combination of the Original
+         Software, prior Modifications used by a Contributor (if any),
+         and the Modifications made by that particular Contributor.
+
+    1.3. "Covered Software" means (a) the Original Software, or (b)
+         Modifications, or (c) the combination of files containing
+         Original Software with files containing Modifications, in
+         each case including portions thereof.
+
+    1.4. "Executable" means the Covered Software in any form other
+         than Source Code.
+
+    1.5. "Initial Developer" means the individual or entity that first
+         makes Original Software available under this License.
+
+    1.6. "Larger Work" means a work which combines Covered Software or
+         portions thereof with code not governed by the terms of this
+         License.
+
+    1.7. "License" means this document.
+
+    1.8. "Licensable" means having the right to grant, to the maximum
+         extent possible, whether at the time of the initial grant or
+         subsequently acquired, any and all of the rights conveyed
+         herein.
+
+    1.9. "Modifications" means the Source Code and Executable form of
+         any of the following:
+
+        A. Any file that results from an addition to, deletion from or
+           modification of the contents of a file containing Original
+           Software or previous Modifications;
+
+        B. Any new file that contains any part of the Original
+           Software or previous Modifications; or
+
+        C. Any new file that is contributed or otherwise made
+           available under the terms of this License.
+
+    1.10. "Original Software" means the Source Code and Executable
+          form of computer software code that is originally released
+          under this License.
+
+    1.11. "Patent Claims" means any patent claim(s), now owned or
+          hereafter acquired, including without limitation, method,
+          process, and apparatus claims, in any patent Licensable by
+          grantor.
+
+    1.12. "Source Code" means (a) the common form of computer software
+          code in which modifications are made and (b) associated
+          documentation included in or with such code.
+
+    1.13. "You" (or "Your") means an individual or a legal entity
+          exercising rights under, and complying with all of the terms
+          of, this License.  For legal entities, "You" includes any
+          entity which controls, is controlled by, or is under common
+          control with You.  For purposes of this definition,
+          "control" means (a) the power, direct or indirect, to cause
+          the direction or management of such entity, whether by
+          contract or otherwise, or (b) ownership of more than fifty
+          percent (50%) of the outstanding shares or beneficial
+          ownership of such entity.
+
+2. License Grants.
+
+    2.1. The Initial Developer Grant.
+
+    Conditioned upon Your compliance with Section 3.1 below and
+    subject to third party intellectual property claims, the Initial
+    Developer hereby grants You a world-wide, royalty-free,
+    non-exclusive license:
+
+        (a) under intellectual property rights (other than patent or
+            trademark) Licensable by Initial Developer, to use,
+            reproduce, modify, display, perform, sublicense and
+            distribute the Original Software (or portions thereof),
+            with or without Modifications, and/or as part of a Larger
+            Work; and
+
+        (b) under Patent Claims infringed by the making, using or
+            selling of Original Software, to make, have made, use,
+            practice, sell, and offer for sale, and/or otherwise
+            dispose of the Original Software (or portions thereof).
+
+        (c) The licenses granted in Sections 2.1(a) and (b) are
+            effective on the date Initial Developer first distributes
+            or otherwise makes the Original Software available to a
+            third party under the terms of this License.
+
+        (d) Notwithstanding Section 2.1(b) above, no patent license is
+            granted: (1) for code that You delete from the Original
+            Software, or (2) for infringements caused by: (i) the
+            modification of the Original Software, or (ii) the
+            combination of the Original Software with other software
+            or devices.
+
+    2.2. Contributor Grant.
+
+    Conditioned upon Your compliance with Section 3.1 below and
+    subject to third party intellectual property claims, each
+    Contributor hereby grants You a world-wide, royalty-free,
+    non-exclusive license:
+
+        (a) under intellectual property rights (other than patent or
+            trademark) Licensable by Contributor to use, reproduce,
+            modify, display, perform, sublicense and distribute the
+            Modifications created by such Contributor (or portions
+            thereof), either on an unmodified basis, with other
+            Modifications, as Covered Software and/or as part of a
+            Larger Work; and
+
+        (b) under Patent Claims infringed by the making, using, or
+            selling of Modifications made by that Contributor either
+            alone and/or in combination with its Contributor Version
+            (or portions of such combination), to make, use, sell,
+            offer for sale, have made, and/or otherwise dispose of:
+            (1) Modifications made by that Contributor (or portions
+            thereof); and (2) the combination of Modifications made by
+            that Contributor with its Contributor Version (or portions
+            of such combination).
+
+        (c) The licenses granted in Sections 2.2(a) and 2.2(b) are
+            effective on the date Contributor first distributes or
+            otherwise makes the Modifications available to a third
+            party.
+
+        (d) Notwithstanding Section 2.2(b) above, no patent license is
+            granted: (1) for any code that Contributor has deleted
+            from the Contributor Version; (2) for infringements caused
+            by: (i) third party modifications of Contributor Version,
+            or (ii) the combination of Modifications made by that
+            Contributor with other software (except as part of the
+            Contributor Version) or other devices; or (3) under Patent
+            Claims infringed by Covered Software in the absence of
+            Modifications made by that Contributor.
+
+3. Distribution Obligations.
+
+    3.1. Availability of Source Code.
+
+    Any Covered Software that You distribute or otherwise make
+    available in Executable form must also be made available in Source
+    Code form and that Source Code form must be distributed only under
+    the terms of this License.  You must include a copy of this
+    License with every copy of the Source Code form of the Covered
+    Software You distribute or otherwise make available.  You must
+    inform recipients of any such Covered Software in Executable form
+    as to how they can obtain such Covered Software in Source Code
+    form in a reasonable manner on or through a medium customarily
+    used for software exchange.
+
+    3.2. Modifications.
+
+    The Modifications that You create or to which You contribute are
+    governed by the terms of this License.  You represent that You
+    believe Your Modifications are Your original creation(s) and/or
+    You have sufficient rights to grant the rights conveyed by this
+    License.
+
+    3.3. Required Notices.
+
+    You must include a notice in each of Your Modifications that
+    identifies You as the Contributor of the Modification.  You may
+    not remove or alter any copyright, patent or trademark notices
+    contained within the Covered Software, or any notices of licensing
+    or any descriptive text giving attribution to any Contributor or
+    the Initial Developer.
+
+    3.4. Application of Additional Terms.
+
+    You may not offer or impose any terms on any Covered Software in
+    Source Code form that alters or restricts the applicable version
+    of this License or the recipients' rights hereunder.  You may
+    choose to offer, and to charge a fee for, warranty, support,
+    indemnity or liability obligations to one or more recipients of
+    Covered Software.  However, you may do so only on Your own behalf,
+    and not on behalf of the Initial Developer or any Contributor.
+    You must make it absolutely clear that any such warranty, support,
+    indemnity or liability obligation is offered by You alone, and You
+    hereby agree to indemnify the Initial Developer and every
+    Contributor for any liability incurred by the Initial Developer or
+    such Contributor as a result of warranty, support, indemnity or
+    liability terms You offer.
+
+    3.5. Distribution of Executable Versions.
+
+    You may distribute the Executable form of the Covered Software
+    under the terms of this License or under the terms of a license of
+    Your choice, which may contain terms different from this License,
+    provided that You are in compliance with the terms of this License
+    and that the license for the Executable form does not attempt to
+    limit or alter the recipient's rights in the Source Code form from
+    the rights set forth in this License.  If You distribute the
+    Covered Software in Executable form under a different license, You
+    must make it absolutely clear that any terms which differ from
+    this License are offered by You alone, not by the Initial
+    Developer or Contributor.  You hereby agree to indemnify the
+    Initial Developer and every Contributor for any liability incurred
+    by the Initial Developer or such Contributor as a result of any
+    such terms You offer.
+
+    3.6. Larger Works.
+
+    You may create a Larger Work by combining Covered Software with
+    other code not governed by the terms of this License and
+    distribute the Larger Work as a single product.  In such a case,
+    You must make sure the requirements of this License are fulfilled
+    for the Covered Software.
+
+4. Versions of the License.
+
+    4.1. New Versions.
+
+    Sun Microsystems, Inc. is the initial license steward and may
+    publish revised and/or new versions of this License from time to
+    time.  Each version will be given a distinguishing version number.
+    Except as provided in Section 4.3, no one other than the license
+    steward has the right to modify this License.
+
+    4.2. Effect of New Versions.
+
+    You may always continue to use, distribute or otherwise make the
+    Covered Software available under the terms of the version of the
+    License under which You originally received the Covered Software.
+    If the Initial Developer includes a notice in the Original
+    Software prohibiting it from being distributed or otherwise made
+    available under any subsequent version of the License, You must
+    distribute and make the Covered Software available under the terms
+    of the version of the License under which You originally received
+    the Covered Software.  Otherwise, You may also choose to use,
+    distribute or otherwise make the Covered Software available under
+    the terms of any subsequent version of the License published by
+    the license steward.
+
+    4.3. Modified Versions.
+
+    When You are an Initial Developer and You want to create a new
+    license for Your Original Software, You may create and use a
+    modified version of this License if You: (a) rename the license
+    and remove any references to the name of the license steward
+    (except to note that the license differs from this License); and
+    (b) otherwise make it clear that the license contains terms which
+    differ from this License.
+
+5. DISCLAIMER OF WARRANTY.
+
+    COVERED SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "AS IS"
+    BASIS, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED,
+    INCLUDING, WITHOUT LIMITATION, WARRANTIES THAT THE COVERED
+    SOFTWARE IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR
+    PURPOSE OR NON-INFRINGING.  THE ENTIRE RISK AS TO THE QUALITY AND
+    PERFORMANCE OF THE COVERED SOFTWARE IS WITH YOU.  SHOULD ANY
+    COVERED SOFTWARE PROVE DEFECTIVE IN ANY RESPECT, YOU (NOT THE
+    INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE COST OF ANY
+    NECESSARY SERVICING, REPAIR OR CORRECTION.  THIS DISCLAIMER OF
+    WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE.  NO USE OF
+    ANY COVERED SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS
+    DISCLAIMER.
+
+6. TERMINATION.
+
+    6.1. This License and the rights granted hereunder will terminate
+    automatically if You fail to comply with terms herein and fail to
+    cure such breach within 30 days of becoming aware of the breach.
+    Provisions which, by their nature, must remain in effect beyond
+    the termination of this License shall survive.
+
+    6.2. If You assert a patent infringement claim (excluding
+    declaratory judgment actions) against Initial Developer or a
+    Contributor (the Initial Developer or Contributor against whom You
+    assert such claim is referred to as "Participant") alleging that
+    the Participant Software (meaning the Contributor Version where
+    the Participant is a Contributor or the Original Software where
+    the Participant is the Initial Developer) directly or indirectly
+    infringes any patent, then any and all rights granted directly or
+    indirectly to You by such Participant, the Initial Developer (if
+    the Initial Developer is not the Participant) and all Contributors
+    under Sections 2.1 and/or 2.2 of this License shall, upon 60 days
+    notice from Participant terminate prospectively and automatically
+    at the expiration of such 60 day notice period, unless if within
+    such 60 day period You withdraw Your claim with respect to the
+    Participant Software against such Participant either unilaterally
+    or pursuant to a written agreement with Participant.
+
+    6.3. In the event of termination under Sections 6.1 or 6.2 above,
+    all end user licenses that have been validly granted by You or any
+    distributor hereunder prior to termination (excluding licenses
+    granted to You by any distributor) shall survive termination.
+
+7. LIMITATION OF LIABILITY.
+
+    UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, WHETHER TORT
+    (INCLUDING NEGLIGENCE), CONTRACT, OR OTHERWISE, SHALL YOU, THE
+    INITIAL DEVELOPER, ANY OTHER CONTRIBUTOR, OR ANY DISTRIBUTOR OF
+    COVERED SOFTWARE, OR ANY SUPPLIER OF ANY OF SUCH PARTIES, BE
+    LIABLE TO ANY PERSON FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR
+    CONSEQUENTIAL DAMAGES OF ANY CHARACTER INCLUDING, WITHOUT
+    LIMITATION, DAMAGES FOR LOST PROFITS, LOSS OF GOODWILL, WORK
+    STOPPAGE, COMPUTER FAILURE OR MALFUNCTION, OR ANY AND ALL OTHER
+    COMMERCIAL DAMAGES OR LOSSES, EVEN IF SUCH PARTY SHALL HAVE BEEN
+    INFORMED OF THE POSSIBILITY OF SUCH DAMAGES.  THIS LIMITATION OF
+    LIABILITY SHALL NOT APPLY TO LIABILITY FOR DEATH OR PERSONAL
+    INJURY RESULTING FROM SUCH PARTY'S NEGLIGENCE TO THE EXTENT
+    APPLICABLE LAW PROHIBITS SUCH LIMITATION.  SOME JURISDICTIONS DO
+    NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR
+    CONSEQUENTIAL DAMAGES, SO THIS EXCLUSION AND LIMITATION MAY NOT
+    APPLY TO YOU.
+
+8. U.S. GOVERNMENT END USERS.
+
+    The Covered Software is a "commercial item," as that term is
+    defined in 48 C.F.R. 2.101 (Oct. 1995), consisting of "commercial
+    computer software" (as that term is defined at 48
+    C.F.R. 252.227-7014(a)(1)) and "commercial computer software
+    documentation" as such terms are used in 48 C.F.R. 12.212
+    (Sept. 1995).  Consistent with 48 C.F.R. 12.212 and 48
+    C.F.R. 227.7202-1 through 227.7202-4 (June 1995), all
+    U.S. Government End Users acquire Covered Software with only those
+    rights set forth herein.  This U.S. Government Rights clause is in
+    lieu of, and supersedes, any other FAR, DFAR, or other clause or
+    provision that addresses Government rights in computer software
+    under this License.
+
+9. MISCELLANEOUS.
+
+    This License represents the complete agreement concerning subject
+    matter hereof.  If any provision of this License is held to be
+    unenforceable, such provision shall be reformed only to the extent
+    necessary to make it enforceable.  This License shall be governed
+    by the law of the jurisdiction specified in a notice contained
+    within the Original Software (except to the extent applicable law,
+    if any, provides otherwise), excluding such jurisdiction's
+    conflict-of-law provisions.  Any litigation relating to this
+    License shall be subject to the jurisdiction of the courts located
+    in the jurisdiction and venue specified in a notice contained
+    within the Original Software, with the losing party responsible
+    for costs, including, without limitation, court costs and
+    reasonable attorneys' fees and expenses.  The application of the
+    United Nations Convention on Contracts for the International Sale
+    of Goods is expressly excluded.  Any law or regulation which
+    provides that the language of a contract shall be construed
+    against the drafter shall not apply to this License.  You agree
+    that You alone are responsible for compliance with the United
+    States export administration regulations (and the export control
+    laws and regulation of any other countries) when You use,
+    distribute or otherwise make available any Covered Software.
+
+10. RESPONSIBILITY FOR CLAIMS.
+
+    As between Initial Developer and the Contributors, each party is
+    responsible for claims and damages arising, directly or
+    indirectly, out of its utilization of rights under this License
+    and You agree to work with Initial Developer and Contributors to
+    distribute such responsibility on an equitable basis.  Nothing
+    herein is intended or shall be deemed to constitute any admission
+    of liability.
+
+--------------------------------------------------------------------
+
+NOTICE PURSUANT TO SECTION 9 OF THE COMMON DEVELOPMENT AND
+DISTRIBUTION LICENSE (CDDL)
+
+For Covered Software in this distribution, this License shall
+be governed by the laws of England and Wales (excluding
+conflict-of-law provisions).  Any disputes arising here from
+shall be exclusively subject to the juristiction of the courts
+of England and Wales.

Makefile

+# Makefile for SDFS
+
+COMPONENT   = SDFS
+ASMHDRS     = SDFS SDFSErr
+ASMCHDRS    = SDFS SDFSErr
+HDRS        =
+CMHGFILE    = SDFSHdr
+CMHGDEPENDS = command module
+OBJS        = base cardreg command discop free freeveneer globals message miscop module sdio service swi
+LIBS        = ${SYNCLIB}
+ROMCDEFINES = -DROM_MODULE
+CLEAN_DEPEND = extra_clean
+
+#CFLAGS     += -DDEBUG_ENABLED
+
+#OBJS       += gpiodebug
+#CFLAGS     += -DGPIODEBUG
+
+include CModule
+
+expasmc.SDFSErr: hdr.SDFSErr
+	${HDR2H} hdr.SDFSErr ${C_EXP_HDR}.SDFSErr
+	
+expasm.SDFSErr: hdr.SDFSErr
+	${CP} hdr.SDFSErr ${EXP_HDR}.SDFSErr ${CPFLAGS}
+
+hdr.SDFSErr: o.SDFSErr
+	${LD} -bin -o $@ o.SDFSErr
+	SetType $@ Text
+
+ifeq (,${MAKE_VERSION})
+
+# RISC OS / amu case
+
+clean::
+	@IfThere hdr.SDFSErr Then ${ECHO} ${RM} hdr.SDFSErr
+	@IfThere hdr.SDFSErr Then ${RM} hdr.SDFSErr
+
+else
+
+# Posix / gmake case
+
+clean::
+	${NOP}
+
+endif
+
+# Dynamic dependencies:

MkClean,fd7

+Dir <Obey$Dir>
+amu clean
+stripdepnd

MkDebug,fd7

+Dir <Obey$Dir>
+amu debug THROWBACK=-throwback

MkExport,fd7

+Dir <Obey$Dir>
+amu export_hdrs

MkGPA,fd7

+Dir <Obey$Dir>
+amu gpa_debug

MkRam,fd7

+Dir <Obey$Dir>
+amu standalone THROWBACK=-throwback

MkRom,fd7

+Dir <Obey$Dir>
+amu rom

Resources/UK/Messages

+Card:card
+ExtEscape:Escape
+BadDrive:Disc drive not known
+DriveEmpty:The disc drive is empty
+BadFileCore:SDFS requires FileCore 3.31 or later
+NotMem:Not a memory card
+CardLocked:Card is locked

VersionNum

+/* (0.01)
+ *
+ * This file is automatically maintained by srccommit, do not edit manually.
+ * Last processed by srccommit version: 1.1.
+ *
+ */
+#define Module_MajorVersion_CMHG        0.01
+#define Module_MinorVersion_CMHG        
+#define Module_Date_CMHG                07 Jun 2012
+
+#define Module_MajorVersion             "0.01"
+#define Module_Version                  1
+#define Module_MinorVersion             ""
+#define Module_Date                     "07 Jun 2012"
+
+#define Module_ApplicationDate          "07-Jun-12"
+
+#define Module_ComponentName            "SDFS"
+#define Module_ComponentPath            "cddl/RiscOS/Sources/FileSys/SDFS/SDFS"
+
+#define Module_FullVersion              "0.01"
+#define Module_HelpVersion              "0.01 (07 Jun 2012)"
+#define Module_LibraryVersionInfo       "0:1"

c/cardreg

+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "Licence").
+ * You may not use this file except in compliance with the Licence.
+ *
+ * You can obtain a copy of the licence at
+ * cddl/RiscOS/Sources/FileSys/SDFS/SDFS/LICENCE.
+ * See the Licence for the specific language governing permissions
+ * and limitations under the Licence.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the Licence file. If applicable, add the
+ * following below this CDDL HEADER, with the fields enclosed by
+ * brackets "[]" replaced with your own identifying information:
+ * Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2012 Ben Avison.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/** \file cardreg.c
+ * Routines to decode card registers.
+ */
+
+#include <string.h>
+#include <stdint.h>
+
+#include "cardreg.h"
+#include "globals.h"
+#include "message.h"
+
+uint32_t cardreg_read_int(uint8_t *reg, bitfield_t where)
+{
+  uint32_t result = 0;
+  size_t   result_bit = 0;
+
+  where.hi++; /* convert to exclusive max */
+  if (where.crc_omitted)
+  {
+    /* Adjust offsets to compensate for CRC byte being omitted */
+    where.hi -= 8;
+    where.lo -= 8;
+  }
+
+  do
+  {
+    size_t  bits_this_time = MIN(8 - (where.lo & 7), where.hi - where.lo);
+    uint8_t byte = reg[where.lo / 8] >> (where.lo & 7);
+    byte &= (1 << bits_this_time) - 1;
+    result |= byte << result_bit;
+    result_bit += bits_this_time;
+    where.lo += bits_this_time;
+  }
+  while (where.lo != where.hi);
+
+  return result;
+}
+
+const char *cardreg_read_string(uint8_t *reg, bitfield_t where, char *buffer)
+{
+  /* Adjust offsets to compensate for CRC byte being omitted */
+  where.hi -= 8;
+  where.lo -= 8;
+
+  /* Convert to byte offsets - it is assumed that strings are byte-aligned */
+  where.hi /= 8;
+  where.lo /= 8;
+
+  /* Check for non-printable characters in string */
+  for (size_t i = where.lo; i <= where.hi; i++)
+  {
+    if (reg[i] < ' ' || reg[i] == 127)
+      return message_lookup_direct("BadString");
+  }
+
+  /* The string is held in reverse order in the register block, so copy it
+   * into the supplied buffer. Assume the buffer is big enough. */
+  size_t length = where.hi - where.lo + 1;
+  for (size_t i = 0; i < length; i++)
+    buffer[i] = reg[where.hi-i];
+  buffer[length] = '\0';
+  return buffer;
+}
+
+const char *cardreg_lookup_manufacturer(const char *code)
+{
+  /* I'm not aware that the allocations have been publicly documented, so this
+   * table has been constructed by experimentation, Googling and some guesswork */
+  static const struct
+  {
+    char code[3];
+    char full[12];
+  }
+  lut[] = {
+      { "KG", "KingMax" },
+      { "PA", "Panasonic" },
+      { "SD", "SanDisk" },
+      { "SM", "Samsung" },
+      { "TM", "Toshiba" },
+      { "TS", "Transcend" },
+  };
+
+  for (size_t i = 0; i < sizeof lut / sizeof *lut; i++)
+  {
+    if (strcmp(code, lut[i].code) == 0)
+      return lut[i].full;
+  }
+
+  /*  Give up, just use the 2-character code */
+  return code;
+}

c/command

+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "Licence").
+ * You may not use this file except in compliance with the Licence.
+ *
+ * You can obtain a copy of the licence at
+ * cddl/RiscOS/Sources/FileSys/SDFS/SDFS/LICENCE.
+ * See the Licence for the specific language governing permissions
+ * and limitations under the Licence.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the Licence file. If applicable, add the
+ * following below this CDDL HEADER, with the fields enclosed by
+ * brackets "[]" replaced with your own identifying information:
+ * Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2012 Ben Avison.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/** \file command.c
+ * Implementation of star commands.
+ */
+
+#include <stdlib.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+#include "swis.h"
+
+#include "Global/CMOS.h"
+#include "Global/FSNumbers.h"
+#include "Global/OsBytes.h"
+#include "Global/RISCOS.h"
+#include "Interface/HighFSI.h"
+
+#include "SDFSHdr.h"
+#include "command.h"
+#include "globals.h"
+#include "message.h"
+
+_kernel_oserror *command_sdfs(void)
+{
+  return _swix(OS_FSControl, _INR(0,1), FSControl_SelectFS, fsnumber_SDFS);
+}
+
+_kernel_oserror *command_configure_syntax_sdfsdrive(void)
+{
+  printf("%s\n", message_lookup_direct("CSDFDRI"));
+  return NULL;
+}
+
+_kernel_oserror *command_status_sdfsdrive(void)