Import from cleaned 360 CD

.gitattributes

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

LICENSE

+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

Makefile

+# Copyright 1996 Acorn Computers Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# Makefile for SCSI Driver
+#
+# ***********************************
+# ***    C h a n g e   L i s t    ***
+# ***********************************
+# Date       Name         Description
+# ----       ----         -----------
+# 25-May-94  AMcC         Created.
+#
+
+#
+# Paths
+#
+EXP_HDR = <export$dir>
+
+#
+# Generic options:
+#
+MKDIR    = cdir
+AS       = aasm
+CP       = copy
+RM       = remove
+TOKENISE = tokenise
+
+CFLAGS   = -c -depend !Depend -IC:
+AFLAGS   = -depend !Depend -Stamp -quit -module
+CPFLAGS  = ~cfr~v
+
+TOKENS   = Hdr:Tokens
+
+#
+# Program specific options:
+#
+COMPONENT = SCSIDriver
+LOG       = SCSILog
+EXPORTS   = ${EXP_HDR}.SCSI
+
+#
+# Generic rules:
+#
+all: ${COMPONENT} ${LOG}
+	@echo ${COMPONENT}: all built
+
+export: ${EXPORTS}
+	@echo ${COMPONENT}: export complete
+
+clean:
+	${RM} ${COMPONENT}
+	${RM} ${LOG}
+	@echo ${COMPONENT}: cleaned
+
+${COMPONENT}: s.SCSIDriver
+	${AS} ${AFLAGS} -from s.SCSIDriver -to $@
+
+${LOG}: s.SCSILog
+	${AS} ${AFLAGS} -from s.SCSILog -to $@
+
+${EXP_HDR}.SCSI: hdr.SCSI
+	${CP} hdr.SCSI $@ ${CPFLAGS}
+
+# Dynamic dependencies:

MkClean,fd7

+| Copyright 1996 Acorn Computers Ltd
+|
+| Licensed under the Apache License, Version 2.0 (the "License");
+| you may not use this file except in compliance with the License.
+| You may obtain a copy of the License at
+|
+|     http://www.apache.org/licenses/LICENSE-2.0
+|
+| Unless required by applicable law or agreed to in writing, software
+| distributed under the License is distributed on an "AS IS" BASIS,
+| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+| See the License for the specific language governing permissions and
+| limitations under the License.
+|
+Dir <Obey$Dir>
+amu_machine clean

MkRom,fd7

+| Copyright 1996 Acorn Computers Ltd
+|
+| Licensed under the Apache License, Version 2.0 (the "License");
+| you may not use this file except in compliance with the License.
+| You may obtain a copy of the License at
+|
+|     http://www.apache.org/licenses/LICENSE-2.0
+|
+| Unless required by applicable law or agreed to in writing, software
+| distributed under the License is distributed on an "AS IS" BASIS,
+| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+| See the License for the specific language governing permissions and
+| limitations under the License.
+|
+Dir <Obey$Dir>
+amu_machine rom

Version

+; > Version
+
+                        GBLS Date
+                        GBLS VString
+                        GBLA Version
+ [ true
+Date                    SETS "16 Jan 1992"
+VString                 SETS "1.10"             ;Also in SoftwareVersionNumber was 1.06
+Version                 SETA 110
+
+SoftwareVersionNumber   EQU  &00000110  ;b31..8/b7..0 major/minor version
+SoftwareExtensions      EQU  &1000FFFF  ;bitset of features
+HardwareVersionNumber   EQU  &00000100  ;b31..8/b7..0 major/minor version
+HardwareExtensions      EQU  &0000FFFF  ;bitset of features
+ ]
+
+ [ false
+Date                    SETS "11 May 1990"
+VString                 SETS "1.05"             ;Also in SoftwareVersionNumber
+Version                 SETA 105
+
+SoftwareVersionNumber   EQU  &00000105  ;b31..8/b7..0 major/minor version
+SoftwareExtensions      EQU  &1000FFFF  ;bitset of features
+HardwareVersionNumber   EQU  &00000100  ;b31..8/b7..0 major/minor version
+HardwareExtensions      EQU  &0000FFFF  ;bitset of features
+ ]
+
+ [ false
+Date                    SETS "27 Mar 1990"
+VString                 SETS "1.04"             ;Also in SoftwareVersionNumber
+Version                 SETA 104
+
+SoftwareVersionNumber   EQU  &00000104  ;b31..8/b7..0 major/minor version
+SoftwareExtensions      EQU  &1000FFFF  ;bitset of features
+HardwareVersionNumber   EQU  &00000100  ;b31..8/b7..0 major/minor version
+HardwareExtensions      EQU  &0000FFFF  ;bitset of features
+ ]
+
+ [ false
+Date                    SETS "23 Jan 1990"
+VString                 SETS "1.03"             ;Also in SoftwareVersionNumber
+Version                 SETA 103
+
+SoftwareVersionNumber   EQU  &00000103  ;b31..8/b7..0 major/minor version
+SoftwareExtensions      EQU  &1000FFFF  ;bitset of features
+HardwareVersionNumber   EQU  &00000100  ;b31..8/b7..0 major/minor version
+HardwareExtensions      EQU  &0000FFFF  ;bitset of features
+ ]
+
+ [ false
+Date                    SETS "26 Oct 1989"
+VString                 SETS "1.01"             ;Also in SoftwareVersionNumber
+Version                 SETA 101
+
+SoftwareVersionNumber   EQU  &00000101  ;b31..8/b7..0 major/minor version
+SoftwareExtensions      EQU  &1000FFFF  ;bitset of features
+HardwareVersionNumber   EQU  &00000100  ;b31..8/b7..0 major/minor version
+HardwareExtensions      EQU  &0000FFFF  ;bitset of features
+ ]
+
+        END

hdr/SCSI

+; Copyright 1996 Acorn Computers Ltd
+;
+; Licensed under the Apache License, Version 2.0 (the "License");
+; you may not use this file except in compliance with the License.
+; You may obtain a copy of the License at
+;
+;     http://www.apache.org/licenses/LICENSE-2.0
+;
+; Unless required by applicable law or agreed to in writing, software
+; distributed under the License is distributed on an "AS IS" BASIS,
+; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+; See the License for the specific language governing permissions and
+; limitations under the License.
+;
+        SUBT    Exported SCSI driver constants
+
+OldOpt  SETA    {OPT}
+        OPT     OptNoList+OptNoP1List
+
+; ***********************************
+; ***    C h a n g e   L i s t    ***
+; ***********************************
+
+; Date       Name  Description
+; ----       ----  -----------
+; 03-Jan-95  AMcC  Changed to using the preferred SWI base and name symbols
+;
+
+SWIClass        SETS SCSIDriverSWI_Name
+
+        ^       SCSIDriverSWI_Base
+
+        AddSWI Version          ; +0   &403C0
+        AddSWI Initialise       ; +1   &403C1
+        AddSWI Control          ; +2   &403C2
+        AddSWI Op               ; +3   &403C3
+        AddSWI Status           ; +4   &403C4
+        AddSWI ReadControlLines ; +5   &403C5  } Not supported by Acorn SCSIdriver
+        AddSWI EEProm           ; +6   &403C6  }
+        AddSWI Reserve          ; +7   &403C7
+        AddSWI List             ; +8   &403C8
+        AddSWI TargetControl    ; +9   &403C9  } Not supported by Acorn SCSIDriver
+
+        ^       SCSILogSWI_Base
+
+        AddSWI LogVersion
+        AddSWI LogList
+
+        OPT     OldOpt
+        END

hdr/SCSIErr

+; Copyright 1996 Acorn Computers Ltd
+;
+; Licensed under the Apache License, Version 2.0 (the "License");
+; you may not use this file except in compliance with the License.
+; You may obtain a copy of the License at
+;
+;     http://www.apache.org/licenses/LICENSE-2.0
+;
+; Unless required by applicable law or agreed to in writing, software
+; distributed under the License is distributed on an "AS IS" BASIS,
+; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+; See the License for the specific language governing permissions and
+; limitations under the License.
+;
+
+; SCSI driver errors
+
+ ^ &00020100
+ AddError SCSI_NoRoom,        "No room for SCSI driver workspace"
+ AddError SCSI_SWIunkn,       "Unknown SCSI SWI number"
+ AddError SCSI_RCunkn,        "Unknown reason code for SCSI SWI"
+ AddError SCSI_BadReset,      "SCSI bus failed to reset"
+ AddError SCSI_BadHostID,     "Invalid SCSI host ID"
+ AddError SCSI_BadDevID,      "Invalid SCSI device ID"
+ AddError SCSI_NoDevice,      "No hardware at this device ID"
+ AddError SCSI_Established,   "Device already established"
+ AddError SCSI_NotEstablished,"Device not established"
+ AddError SCSI_NotIdle       ,"Device not idle"
+
+ AddError SCSI_Timeout       ,"Timeout"  ;On selection,
+ AddError SCSI_Timeout2      ,"Timeout"  ;During execution
+ AddError SCSI_QueueNotEmpty ,"Command queue not empty"
+ AddError SCSI_QueueFull     ,"Command queue full"
+ AddError SCSI_DevReserved   ,"SCSI driver reservation error"
+ AddError SCSI_InvalidParms  ,"Invalid parameters"  ;wrong number
+ AddError SCSI_ParmError     ,"Parameter error"     ;
+ AddError SCSI_NotFromIRQ    ,"Not callable from IRQ routine";
+
+ AddError SCSI_AbortOp       ,"Operation aborted"
+ AddError SCSI_Died          ,"Unexpected disconnection"
+
+ AddError SCSI_WrongMEMC     ,"SCSI requires MEMC1a - see your dealer"
+
+;
+; Interpretations of the returned target status byte for status other than GOOD
+;
+ ^ &00020100 + &80
+ AddError SCSI_CheckCondition,"Target status - Check condition"
+ AddError SCSI_Busy          ,"Target status - Busy"
+ AddError SCSI_StatusUnkn    ,"Target status - Unknown"
+
+;
+; If a command reports a status of CHECK CONDITION, the driver may be set
+; to automaticaly perform a 'request sense'.
+;
+; Interpretations of the 'Sense Key' field of an 'Extended Sense Data block'
+;
+ ^ &00020100 + &C0
+ AddError SCSI_CC_NoSense       , "Target error - No sense"
+ AddError SCSI_RecoveredError   , "Target error - Recovered error"
+ AddError SCSI_CC_NotReady      , "Target error - Not ready"
+ AddError SCSI_CC_MediumError   , "Target error - Medium error"
+ AddError SCSI_CC_HardwareError , "Target error - Hardware error"
+ AddError SCSI_CC_IllegalRequest, "Target error - Illegal request"
+ AddError SCSI_CC_UnitAttention , "Target error - Unit attention"
+ AddError SCSI_CC_DataProtect   , "Target error - Data protect"
+ AddError SCSI_CC_BlankCheck    , "Target error - Blank check"
+ AddError SCSI_CC_VendorUnique  , "Target error - Vendor unique"
+ AddError SCSI_CC_CopyAborted   , "Target error - Copy aborted"
+ AddError SCSI_CC_AbortedCommand, "Target error - Aborted command"
+ AddError SCSI_CC_Equal         , "Target error - Equal"
+ AddError SCSI_CC_VolumeOverflow, "Target error - Volume overflow"
+ AddError SCSI_CC_Miscompare    , "Target error - Miscompare"
+ AddError SCSI_CC_Reserved      , "Target error - Reserved sense key"
+;
+; Non-extended sense, or extended sense, but error code <> 0
+;
+ AddError SCSI_CC_UnKn          , "Target error - Unknown"
+
+
+        END

rm/.gitignore

+*
+!.gitignore

s/SCSILog

+; Copyright 1996 Acorn Computers Ltd
+;
+; Licensed under the Apache License, Version 2.0 (the "License");
+; you may not use this file except in compliance with the License.
+; You may obtain a copy of the License at
+;
+;     http://www.apache.org/licenses/LICENSE-2.0
+;
+; Unless required by applicable law or agreed to in writing, software
+; distributed under the License is distributed on an "AS IS" BASIS,
+; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+; See the License for the specific language governing permissions and
+; limitations under the License.
+;
+;------------------------------------------------------------------------------
+;
+; RISC OS SCSI log module
+;
+; Author : R.C.Manby
+;  Acorn Computers Ltd
+;
+; History
+;   4-Jul-88: RCM: Started
+;
+;------------------------------------------------------------------------------
+
+                GBLL true
+                GBLL false
+true            SETL 1=1
+false           SETL 1=0
+
+                GBLL trace
+trace           SETL false
+
+
+
+
+Module_BaseAddr
+
+        GET Hdr:ListOpts  ; These first three must be in this order
+        GET Hdr:Macros
+        GET Hdr:System
+
+        GET Hdr:ModHand
+;        GET Hdr:Services
+        GET Hdr:File ;amg 24/10/91 - needed for current hdr.newerrors
+        GET Hdr:NewErrors
+        GET Hdr:NewSpace
+;        GET Hdr:Proc
+;        GET Hdr:Tokens
+;        GET Hdr:DevNos
+
+        GET Hdr:SCSI
+        GET Hdr:SCSIErr    ;Insert me in Hdr.NewErrors?
+        GET Version
+
+
+;------------------------------------------------------------------------------
+;
+; Register names
+; ==============
+;
+;WsPtr          RN 12
+StkPtr          RN 13
+Link            RN 14
+;PC             RN 15
+
+
+;------------------------------------------------------------------------------
+;
+; Access to stacked registers - TO BE USED WITH CAUTION!
+; ===========================
+
+ ^ 0,StkPtr
+StackedR0   # 4
+StackedR1   # 4
+StackedR2   # 4
+StackedR3   # 4
+StackedR4   # 4
+StackedR5   # 4
+StackedR6   # 4
+StackedR7   # 4
+
+
+
+Podule0SlowAccess       EQU &03240000
+PoduleSpeedMask         EQU &00180000
+
+
+LF      *   10
+CR      *   13
+SPACE   *   32
+
+
+;==============================================================================
+;
+; Macro definitions
+; =================
+;
+;------------------------------------------------------------------------------
+;
+        MACRO
+        MySWI   $swiname
+        ASSERT  SCSILog_SWIbase+(.-SCSILog_SWItable)/4 = $swiname
+        B       SWI_$swiname
+        MEND
+;
+;
+;------------------------------------------------------------------------------
+;
+        MACRO
+        mess    $cond,$s1,$s2,$s3,$s4,$s5
+ [ trace
+        B$cond  %F11
+        BAL     %F21
+11
+        Push    "LR"
+        SWI     OS_WriteS
+ [ "$s1"="NL"
+ = CR,LF
+ |
+ = "ScsiLog: $s1"
+ ]
+ [ "$s2"=""
+ |
+  [ "$s2"="NL"
+  = CR,LF
+  |
+  = "$s2"
+  ]
+  [ "$s3"=""
+  |
+   [ "$s3"="NL"
+   = CR,LF
+   |