Merge pull request #105 from davidgiven/scp

Add conversion support for Supercard Pro scp files.
Add the Supercard Pro decoder.
2025-10-31 11:17:01 -07:00 · 2019-08-28 23:52:27 +02:00 · 2019-08-28 23:32:09 +02:00 · 2019-08-28 00:23:21 +02:00 · 2019-08-28 00:20:49 +02:00 · 2019-08-28 00:19:18 +02:00
20 changed files with 434 additions and 63 deletions
--- a/FluxEngine.cydsn/CortexM3/ARM_GCC_541/Release/FluxEngine.hex
+++ b/FluxEngine.cydsn/CortexM3/ARM_GCC_541/Release/FluxEngine.hex
@@ -17,24 +17,24 @@
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+:4003C0007801C077C2FDC46ECC66CEEAD007D204D60CD80CDE01E208EA01E201E680EA0205010F022D023301350239203F14560859045B045D905F01800288018C018F0427
+:400400009D01A502A804A904AD08AE01B004B10CB301B403B502BE01BF14D608D80BD904DB04DC99DD90DF0101A00240100812021880192020C821082202272429202A4043
+:400440002B102D4032403680378038403D803F0859145A405F806240632867016A806C086F02780183018B028D108E409140980199809D209E409F20A140A280A444C00BA7
+:40048000C403CA1ECC08CE58D61ED81EDE01E680EA02A904AB04AD08B440E802EE01170433043402371039043A203E808620C420CCE0CE70E21030203720831084028A08BE
+:4004C0009C029E809F10AD04CC30E220E640EE40560889809A089E809F20A420D4409E809F20A580A820EA8014407E018710C404DE045104564058405D8062086740858012
+:40050000871088408A018E4096029710B040D407D604D803E005E402EA01820286088740924095089770A608AE400B210F149240950897B1A202AB01AF40C20F25808280E6
+:400540008B029E80A580AF20C820E280EA4073807F029B80A302AB80DC80DE20EA8005200B800C020D040F08520254205E4061028C028F04924095089780A202AF04C001D7
+:40058000C20DD403D604D802E202E602A920AD02B420EC0801010D010F0111011D0100BD012A10050820324039804620082010C42000080280000000FE1001ED00E3001C2E
+:4005C00000000000000000000000040182EF3D10000000083800C11F07E0000000080220000010004603020000E0000412FFFFFF0020F00120100000000008000404040460
+:4006000099990001000800004020800840200008000040A8000000000000000000000000000000003F00003F1F001F0000000000000000001000000040000000000000003B
+:40064000C0000000FF0020FF4700470000010000A00000BFBF009F00000000000001000000000000000000000000000000000000000000000000000000000000000000004F
 :40068000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003A
 :4006C00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000FA
 :4007000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000B9
@@ -4615,12 +4615,12 @@
 :0200000490105A
 :04000000BC90ACAF55
 :0200000490303A
-:0200000033F2D9
+:020000004C1A98
 :0200000490402A
 :4000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000C0
 :400040000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000080
 :400080000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040
 :4000C0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
 :0200000490501A
-:0C00000000012E16106900002E2A445B3F
+:0C00000000012E16106900002E2A5C83FF
 :00000001FF
--- a/FluxEngine.cydsn/FluxEngine.cyprj
+++ b/FluxEngine.cydsn/FluxEngine.cyprj
@@ -530,31 +530,38 @@
 <CyGuid_ebc4f06d-207f-49c2-a540-72acf4adabc0 type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtFolderSerialize" version="3">
 <CyGuid_2f73275c-45bf-46ba-b3b1-00a2fe0c8dd8 type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtBaseContainerSerialize" version="1">
 <CyGuid_31768f72-0253-412b-af77-e7dba74d1330 type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtItemSerialize" version="2" name="LED" persistent="">
-<Hidden v="False" />
+<Hidden v="True" />
 </CyGuid_31768f72-0253-412b-af77-e7dba74d1330>
 <CyGuid_0820c2e7-528d-4137-9a08-97257b946089 type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtItemListSerialize" version="2">
 <dependencies>
 <CyGuid_8b8ab257-35d3-4473-b57b-36315200b38b type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtFileSerialize" version="3" xml_contents_version="1">
 <CyGuid_31768f72-0253-412b-af77-e7dba74d1330 type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtItemSerialize" version="2" name="LED_aliases.h" persistent="Generated_Source\PSoC5\LED_aliases.h">
-<Hidden v="False" />
+<Hidden v="True" />
 </CyGuid_31768f72-0253-412b-af77-e7dba74d1330>
 <build_action v="HEADER;;;;" />
 <PropertyDeltas />
 </CyGuid_8b8ab257-35d3-4473-b57b-36315200b38b>
 <CyGuid_8b8ab257-35d3-4473-b57b-36315200b38b type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtFileSerialize" version="3" xml_contents_version="1">
 <CyGuid_31768f72-0253-412b-af77-e7dba74d1330 type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtItemSerialize" version="2" name="LED.c" persistent="Generated_Source\PSoC5\LED.c">
-<Hidden v="False" />
+<Hidden v="True" />
 </CyGuid_31768f72-0253-412b-af77-e7dba74d1330>
 <build_action v="SOURCE_C;CortexM3;;;" />
 <PropertyDeltas />
 </CyGuid_8b8ab257-35d3-4473-b57b-36315200b38b>
 <CyGuid_8b8ab257-35d3-4473-b57b-36315200b38b type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtFileSerialize" version="3" xml_contents_version="1">
 <CyGuid_31768f72-0253-412b-af77-e7dba74d1330 type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtItemSerialize" version="2" name="LED.h" persistent="Generated_Source\PSoC5\LED.h">
-<Hidden v="False" />
+<Hidden v="True" />
 </CyGuid_31768f72-0253-412b-af77-e7dba74d1330>
 <build_action v="HEADER;;;;" />
 <PropertyDeltas />
 </CyGuid_8b8ab257-35d3-4473-b57b-36315200b38b>
+<CyGuid_8b8ab257-35d3-4473-b57b-36315200b38b type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtFileSerialize" version="3" xml_contents_version="1">
+<CyGuid_31768f72-0253-412b-af77-e7dba74d1330 type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtItemSerialize" version="2" name="LED_PM.c" persistent="Generated_Source\PSoC5\LED_PM.c">
+<Hidden v="True" />
+</CyGuid_31768f72-0253-412b-af77-e7dba74d1330>
+<build_action v="SOURCE_C;CortexM3;;;" />
+<PropertyDeltas />
+</CyGuid_8b8ab257-35d3-4473-b57b-36315200b38b>
 </dependencies>
 </CyGuid_0820c2e7-528d-4137-9a08-97257b946089>
 </CyGuid_2f73275c-45bf-46ba-b3b1-00a2fe0c8dd8>
@@ -3282,6 +3289,39 @@
 </CyGuid_2f73275c-45bf-46ba-b3b1-00a2fe0c8dd8>
 <filters />
 </CyGuid_ebc4f06d-207f-49c2-a540-72acf4adabc0>
+<CyGuid_ebc4f06d-207f-49c2-a540-72acf4adabc0 type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtFolderSerialize" version="3">
+<CyGuid_2f73275c-45bf-46ba-b3b1-00a2fe0c8dd8 type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtBaseContainerSerialize" version="1">
+<CyGuid_31768f72-0253-412b-af77-e7dba74d1330 type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtItemSerialize" version="2" name="LED_PIN" persistent="">
+<Hidden v="False" />
+</CyGuid_31768f72-0253-412b-af77-e7dba74d1330>
+<CyGuid_0820c2e7-528d-4137-9a08-97257b946089 type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtItemListSerialize" version="2">
+<dependencies>
+<CyGuid_8b8ab257-35d3-4473-b57b-36315200b38b type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtFileSerialize" version="3" xml_contents_version="1">
+<CyGuid_31768f72-0253-412b-af77-e7dba74d1330 type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtItemSerialize" version="2" name="LED_PIN_aliases.h" persistent="Generated_Source\PSoC5\LED_PIN_aliases.h">
+<Hidden v="False" />
+</CyGuid_31768f72-0253-412b-af77-e7dba74d1330>
+<build_action v="HEADER;;;;" />
+<PropertyDeltas />
+</CyGuid_8b8ab257-35d3-4473-b57b-36315200b38b>
+<CyGuid_8b8ab257-35d3-4473-b57b-36315200b38b type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtFileSerialize" version="3" xml_contents_version="1">
+<CyGuid_31768f72-0253-412b-af77-e7dba74d1330 type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtItemSerialize" version="2" name="LED_PIN.c" persistent="Generated_Source\PSoC5\LED_PIN.c">
+<Hidden v="False" />
+</CyGuid_31768f72-0253-412b-af77-e7dba74d1330>
+<build_action v="SOURCE_C;CortexM3;;;" />
+<PropertyDeltas />
+</CyGuid_8b8ab257-35d3-4473-b57b-36315200b38b>
+<CyGuid_8b8ab257-35d3-4473-b57b-36315200b38b type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtFileSerialize" version="3" xml_contents_version="1">
+<CyGuid_31768f72-0253-412b-af77-e7dba74d1330 type_name="CyDesigner.Common.ProjMgmt.Model.CyPrjMgmtItemSerialize" version="2" name="LED_PIN.h" persistent="Generated_Source\PSoC5\LED_PIN.h">
+<Hidden v="False" />
+</CyGuid_31768f72-0253-412b-af77-e7dba74d1330>
+<build_action v="HEADER;;;;" />
+<PropertyDeltas />
+</CyGuid_8b8ab257-35d3-4473-b57b-36315200b38b>
+</dependencies>
+</CyGuid_0820c2e7-528d-4137-9a08-97257b946089>
+</CyGuid_2f73275c-45bf-46ba-b3b1-00a2fe0c8dd8>
+<filters />
+</CyGuid_ebc4f06d-207f-49c2-a540-72acf4adabc0>
 </dependencies>
 </CyGuid_0820c2e7-528d-4137-9a08-97257b946089>
 </CyGuid_2f73275c-45bf-46ba-b3b1-00a2fe0c8dd8>
--- a/FluxEngine.cydsn/TopDesign/TopDesign.cysch
+++ b/FluxEngine.cydsn/TopDesign/TopDesign.cysch
--- a/FluxEngine.cydsn/UdbSampler/UdbSampler.cyudb
+++ b/FluxEngine.cydsn/UdbSampler/UdbSampler.cyudb
--- a/4
+++ b/4
@@ -1,8 +1,8 @@
 PACKAGES = zlib sqlite3 libusb-1.0

-export CFLAGS = -O3 -g --std=c++14 \
+export CFLAGS = -Os -g --std=c++14 \
 	-ffunction-sections -fdata-sections
-export LDFLAGS = -O3
+export LDFLAGS = -Os

 ifeq ($(OS), Windows_NT)
 export CXX = /mingw32/bin/g++
--- a/arch/ibm/decoder.cc
+++ b/arch/ibm/decoder.cc
@@ -134,6 +134,9 @@ void IbmDecoder::decodeSectorRecord()
    uint16_t gotCrc = crc16(CCITT_POLY, bytes.slice(0, _currentHeaderLength + 5));
    if (wantCrc == gotCrc)
        _sector->status = Sector::DATA_MISSING; /* correct but unintuitive */
+
+    if (_ignoreSideByte)
+        _sector->logicalSide = _sector->physicalSide;
 }

 void IbmDecoder::decodeDataRecord()
--- a/arch/ibm/ibm.h
+++ b/arch/ibm/ibm.h
@@ -31,8 +31,9 @@ struct IbmIdam
 class IbmDecoder : public AbstractDecoder
 {
 public:
-    IbmDecoder(unsigned sectorBase):
-        _sectorBase(sectorBase)
+    IbmDecoder(unsigned sectorBase, bool ignoreSideByte=false):
+        _sectorBase(sectorBase),
+        _ignoreSideByte(ignoreSideByte)
    {}

    RecordType advanceToNextRecord();
@@ -41,6 +42,7 @@ public:

 private:
    unsigned _sectorBase;
+    bool _ignoreSideByte;
    unsigned _currentSectorSize;
    unsigned _currentHeaderLength;
 };
--- a/doc/using.md
+++ b/doc/using.md
@@ -221,10 +221,31 @@ directory.
  file format in a non-backwards-compatible way; this tool will upgrade flux
  files to the new format.

+  - `fluxengine convert`: converts various formats to various other formats.
+  You can use this to convert Catweasel or Supercard Pro flux files to
+  FluxEngine's native format, for flux files to various other formats useful
+  for debugging (including VCD which can be loaded into
+  [sigrok](http://sigrok.org)).
+
 Commands which normally take `--source` or `--dest` get a sensible default if
 left unspecified. `fluxengine read ibm` on its own will read drive 0 and
 write an `ibm.img` file.

+## Visualisation
+
+When doing a read (either from a real disk or from a flux file) you can use
+`--write-svg=output.svg` to write out a graphical visualisation of where the
+sectors are on the disk. Here's a IBM PC 1232kB disk:
+
+![A disk visualisation](./visualiser.svg)
+
+Blue represents data, light blue a header, and red is a bad sector. Side zero
+is on the left and side one is on the right.
+
+The visualiser is extremely primitive and you have to explicitly tell it how
+big your disk is, in milliseconds. The default is 200ms (for a normal 3.5"
+disk). For a 5.25" disk, use `--visualiser-period=166`.
+
 ## Extra programs

 Supplied with FluxEngine, but not part of FluxEngine, are some little tools I
@@ -232,25 +253,24 @@ wrote to do useful things. These are built alongside FluxEngine.

  - `brother120tool`: extracts files from a 120kB Brother filesystem image.

-  - `cwftoflux`: converts (one flavour of) CatWeasel flux file into a
-    FluxEngine flux file.
-
 ## The recommended workflow

-So you've just received, say, a huge pile of old Brother word processor disks containing valuable historical data, and you want to read them.
+So you've just received, say, a huge pile of old Brother word processor disks
+containing valuable historical data, and you want to read them.

 Typically I do this:

 ```
-$ fluxengine read brother -s :d=0 -o brother.img --write-flux=brother.flux
+$ fluxengine read brother -s :d=0 -o brother.img --write-flux=brother.flux --write-svg=brother.svg
 ```

 This will read the disk in drive 0 and write out a filesystem image. It'll
-also copy the flux to brother.flux. If I then need to tweak the settings, I
-can rerun the decode without having to physically touch the disk like this:
+also copy the flux to brother.flux and write out an SVG visualisation. If I
+then need to tweak the settings, I can rerun the decode without having to
+physically touch the disk like this:

 ```
-$ fluxengine read brother -s brother.flux -o brother.img
+$ fluxengine read brother -s brother.flux -o brother.img --write-svg=brother.svg
 ```

 Apart from being drastically faster, this avoids touching the (potentially
--- a/doc/visualiser.svg
+++ b/doc/visualiser.svg
--- a/lib/decoders/decoders.cc
+++ b/lib/decoders/decoders.cc
@@ -43,19 +43,25 @@ void AbstractDecoder::decodeToSectors(Track& track)

        recordStart = fmr.tell();
        decodeSectorRecord();
-        pushRecord(recordStart, fmr.tell());
+        Fluxmap::Position recordEnd = fmr.tell();
+        pushRecord(recordStart, recordEnd);
        if (sector.status == Sector::DATA_MISSING)
        {
            /* The data is in a separate record. */

+            sector.headerStartTime = recordStart.ns();
+            sector.headerEndTime = recordEnd.ns();
            r = advanceToNextRecord();
            if (r == DATA_RECORD)
            {
                recordStart = fmr.tell();
                decodeDataRecord();
-                pushRecord(recordStart, fmr.tell());
+                recordEnd = fmr.tell();
+                pushRecord(recordStart, recordEnd);
            }
        }
+        sector.dataStartTime = recordStart.ns();
+        sector.dataEndTime = recordEnd.ns();

        if (sector.status != Sector::MISSING)
            track.sectors.push_back(sector);
--- a/lib/fluxsource/streamfluxsource.cc
+++ b/lib/fluxsource/streamfluxsource.cc
@@ -24,7 +24,7 @@ public:
    void recalibrate() {}

 private:
-    const std::string& _path;
+    const std::string _path;
 };

 std::unique_ptr<FluxSource> FluxSource::createStreamFluxSource(const std::string& path)
--- a/lib/reader.cc
+++ b/lib/reader.cc
@@ -9,6 +9,7 @@
 #include "decoders/decoders.h"
 #include "sector.h"
 #include "sectorset.h"
+#include "visualiser.h"
 #include "record.h"
 #include "image.h"
 #include "bytes.h"
@@ -17,7 +18,7 @@
 #include "imagewriter/imagewriter.h"
 #include "fmt/format.h"

-FlagGroup readerFlags { &hardwareFluxSourceFlags, &fluxmapReaderFlags };
+FlagGroup readerFlags { &hardwareFluxSourceFlags, &fluxmapReaderFlags, &visualiserFlags };

 static DataSpecFlag source(
    { "--source", "-s" },
@@ -34,6 +35,11 @@ static StringFlag destination(
    "write the raw magnetic flux to this file",
    "");

+static StringFlag visualise(
+	{ "--write-svg" },
+	"write a visualisation of the disk to this file",
+	"");
+
 static SettableFlag justRead(
 	{ "--just-read" },
 	"just read the disk and do no further processing");
@@ -143,7 +149,7 @@ static void replace_sector(std::unique_ptr<Sector>& replacing, Sector& replaceme
 			return;
 		}
 	}
-	if (!replacing || (replacing->status != Sector::OK))
+	if (!replacing || ((replacing->status != Sector::OK) && (replacement.status == Sector::OK)))
 	{
 		if (!replacing)
 			replacing.reset(new Sector);
@@ -253,6 +259,9 @@ void readDiskCommand(AbstractDecoder& decoder)
        std::cout << size << " bytes decoded." << std::endl;
    }

+	if (!visualise.get().empty())
+		visualiseSectorsToFile(allSectors, visualise.get());
+
    writeSectorsToFile(allSectors, outputSpec);
 	if (failures)
 		std::cerr << "Warning: some sectors could not be decoded." << std::endl;
--- a/lib/sector.h
+++ b/lib/sector.h
@@ -27,6 +27,10 @@ public:
 	Status status = Status::INTERNAL_ERROR;
    Fluxmap::Position position;
    nanoseconds_t clock = 0;
+    nanoseconds_t headerStartTime = 0;
+    nanoseconds_t headerEndTime = 0;
+    nanoseconds_t dataStartTime = 0;
+    nanoseconds_t dataEndTime = 0;
    int physicalTrack = 0;
    int physicalSide = 0;
    int logicalTrack = 0;
--- a/lib/sectorset.h
+++ b/lib/sectorset.h
@@ -17,6 +17,9 @@ public:
 	std::unique_ptr<Sector>& get(int track, int head, int sector);
 	Sector* get(int track, int head, int sector) const;

+	const std::map<const key_t, std::unique_ptr<Sector>>& get() const
+	{ return _data; }
+
 	void calculateSize(
 		unsigned& numTracks, unsigned& numHeads, unsigned& numSectors,
 		unsigned& sectorSize) const;
--- a/lib/visualiser.cc
+++ b/lib/visualiser.cc
@@ -0,0 +1,95 @@
+#define _USE_MATH_DEFINES
+#include "globals.h"
+#include "image.h"
+#include "sector.h"
+#include "sectorset.h"
+#include "visualiser.h"
+#include "fmt/format.h"
+#include "flags.h"
+#include <iostream>
+#include <fstream>
+#include <math.h>
+
+FlagGroup visualiserFlags;
+
+static IntFlag period(
+    { "--visualiser-period" },
+    "rotational period for use by the visualiser (milliseconds)",
+    200);
+
+static const int SIZE = 480;
+static const int BORDER = 10;
+static const int RADIUS = (SIZE/2) - (BORDER/2);
+static const int CORE = 50;
+static const int TRACKS = 83;
+static const double TRACK_SPACING = double(RADIUS-CORE) / TRACKS;
+
+void visualiseSectorsToFile(const SectorSet& sectors, const std::string& filename)
+{
+    std::cout << "writing visualisation\n";
+    std::ofstream f(filename, std::ios::out);
+    if (!f.is_open())
+        Error() << "cannot open visualisation file";
+
+    f << fmt::format("<svg xmlns=\"http://www.w3.org/2000/svg\" viewBox=\"{0} {1} {2} {3}\">",
+        0, 0, SIZE*2, SIZE);
+
+    const double radians_per_ns = 2.0*M_PI / (period*1e6);
+
+    auto drawSide = [&](int side)
+    {
+        f << fmt::format("<g transform='matrix(1 0 0 -1 {} {})'>", SIZE/2 + (side*SIZE), SIZE/2);
+        f << fmt::format("<circle cx='0' cy='0' r='{}' stroke='none' fill='#ccc'/>", RADIUS);
+
+        for (int physicalTrack = 0; physicalTrack < TRACKS; physicalTrack++)
+        {
+            double radius = CORE + physicalTrack*TRACK_SPACING;
+            f << fmt::format("<circle cx='0' cy='0' r='{}' stroke='#888' stroke-width='0.5' fill='none'/>", radius);
+
+            auto drawArc = [&](const std::unique_ptr<Sector>& sector, nanoseconds_t start, nanoseconds_t end, const std::string& colour)
+            {
+                start %= period*1000000;
+                end %= period*1000000;
+                if (end < start)
+                    end += period*1000000;
+                
+                double theta1 = start * radians_per_ns;
+                double theta2 = end * radians_per_ns;
+                int large = (theta2 - theta1) >= M_PI;
+
+                f << fmt::format("\n<!-- {} {} = {} {} -->", start, end, theta1, theta2);
+                f << fmt::format("<path fill='none' stroke='{}' stroke-width='1.5' d='", colour);
+                f << fmt::format("M {} {} ", cos(theta1)*radius, sin(theta1)*radius);
+                f << fmt::format("A {0} {0} 0 {3} 1 {1} {2}", radius, cos(theta2)*radius, sin(theta2)*radius, large);
+                f << fmt::format("'><title>Track {} Head {} Sector {}; {}ms to {}ms</title></path>",
+                    sector->logicalTrack, sector->logicalSide, sector->logicalSector,
+                    start/1e6, end/1e6);
+            };
+
+            /* Sadly, SectorSets aren't indexable by physical track. */
+            for (const auto& e : sectors.get())
+            {
+                const auto& sector = e.second;
+                if ((sector->physicalSide == side) && (sector->physicalTrack == physicalTrack))
+                {
+                    const char* colour = "#f00";
+                    if (sector->status == Sector::OK)
+                        colour = "#00f";
+                    if (sector->headerStartTime && sector->headerEndTime)
+                        drawArc(sector, sector->headerStartTime, sector->headerEndTime, "#0ff");
+                    if (sector->dataStartTime && sector->dataEndTime)
+                        drawArc(sector, sector->dataStartTime, sector->dataEndTime, colour);
+                }
+            }
+        }
+
+        f << "</g>";
+    };
+
+    f << fmt::format("<rect x='0' y='0' width='{}' height='{}' stroke='none' fill='#fff'/>", SIZE*2, SIZE);
+
+    drawSide(0);
+    drawSide(1);
+
+    f << "</svg>";
+}
--- a/lib/visualiser.h
+++ b/lib/visualiser.h
@@ -0,0 +1,12 @@
+#ifndef VISUALISER_H
+#define VISUALISER_H
+
+#include "flags.h"
+
+class SectorSet;
+
+extern FlagGroup visualiserFlags;
+
+extern void visualiseSectorsToFile(const SectorSet& sectors, const std::string& filename);
+
+#endif
--- a/mkninja.sh
+++ b/mkninja.sh
@@ -183,6 +183,7 @@ buildlibrary libbackend.a \
    lib/sectorset.cc \
    lib/sql.cc \
    lib/usb.cc \
+    lib/visualiser.cc \
    lib/writer.cc \

 buildlibrary libfrontend.a \
@@ -207,6 +208,7 @@ buildlibrary libfrontend.a \
    src/fe-readvictor9k.cc \
    src/fe-readzilogmcz.cc \
    src/fe-rpm.cc \
+    src/fe-scptoflux.cc \
    src/fe-seek.cc \
    src/fe-testbulktransport.cc \
    src/fe-upgradefluxfile.cc \
--- a/src/fe-readibm.cc
+++ b/src/fe-readibm.cc
@@ -17,13 +17,18 @@ static IntFlag sectorIdBase(
 	"Sector ID of the first sector.",
 	1);

+static BoolFlag ignoreSideByte(
+	{ "--ignore-side-byte" },
+	"Ignore the side byte in the sector ID, and use the physical side instead.",
+	false);
+
 int mainReadIBM(int argc, const char* argv[])
 {
 	setReaderDefaultSource(":t=0-79:s=0-1");
 	setReaderDefaultOutput("ibm.img");
    flags.parseFlags(argc, argv);

-	IbmDecoder decoder(sectorIdBase);
+	IbmDecoder decoder(sectorIdBase, ignoreSideByte);
 	readDiskCommand(decoder);
    return 0;
 }
--- a/src/fe-scptoflux.cc
+++ b/src/fe-scptoflux.cc
@@ -0,0 +1,167 @@
+#include "globals.h"
+#include "fluxmap.h"
+#include "sql.h"
+#include "bytes.h"
+#include "protocol.h"
+#include "fmt/format.h"
+#include <fstream>
+
+struct ScpHeader
+{
+    char file_id[3];       // file ID - 'SCP'
+    uint8_t version;       // major/minor in nibbles
+    uint8_t type;          // disk type - subclass/class in nibbles
+    uint8_t revolutions;   // up to 5
+    uint8_t start_track;   // 0..165
+    uint8_t end_track;     // 0..165
+    uint8_t flags;         // see below
+    uint8_t cell_width;    // in bits, 0 meaning 16
+    uint8_t heads;         // 0 = both, 1 = side 0 only, 2 = side 1 only
+    uint8_t resolution;    // 25ns * (resolution+1)
+    uint8_t checksum[4];   // of data after this point
+    uint8_t track[165][4]; // track offsets, not necessarily 165
+};
+
+struct ScpTrack
+{
+    char track_id[3];      // 'TRK'
+    uint8_t strack;        // SCP track number
+    struct
+    {
+        uint8_t index[4];  // time for one revolution
+        uint8_t length[4]; // number of bitcells
+        uint8_t offset[4]; // offset to bitcell data, relative to track header
+    }
+    revolution[5];
+};
+
+static std::ifstream inputFile;
+static sqlite3* outputDb;
+static ScpHeader header;
+static nanoseconds_t resolution;
+static int startSide;
+static int endSide;
+
+static void syntax()
+{
+    std::cout << "Syntax: fluxengine convert cwftoflux <cwffile> <fluxfile>\n";
+    exit(0);
+}
+
+static void check_for_error()
+{
+    if (inputFile.fail())
+        Error() << fmt::format("I/O error: {}", strerror(errno));
+}
+
+static int trackno(int strack)
+{
+    if (startSide == endSide)
+        return strack;
+    return strack >> 1;
+}
+
+static int headno(int strack)
+{
+    if (startSide == endSide)
+        return startSide;
+    return strack & 1;
+}
+
+static void read_header()
+{
+    inputFile.read((char*) &header, sizeof(header));
+    check_for_error();
+
+    if ((header.file_id[0] != 'S')
+            || (header.file_id[1] != 'C')
+            || (header.file_id[2] != 'P'))
+        Error() << "input not a SCP file";
+
+    resolution = 25 * (header.resolution + 1);
+    startSide = (header.heads == 2) ? 1 : 0;
+    endSide = (header.heads == 1) ? 0 : 1;
+
+    if ((header.cell_width != 0) && (header.cell_width != 16))
+        Error() << "currently only 16-bit cells are supported";
+
+    std::cout << fmt::format("tracks {}-{}, heads {}-{}\n",
+        trackno(header.start_track), trackno(header.end_track), startSide, endSide);
+    std::cout << fmt::format("sample resolution: {} ns\n", resolution);
+}
+
+static void read_track(int strack)
+{
+    uint32_t offset = Bytes(header.track[strack], 4).reader().read_le32();
+
+    ScpTrack trackheader;
+    inputFile.seekg(offset, std::ios::beg);
+    inputFile.read((char*) &trackheader, sizeof(trackheader));
+    check_for_error();
+
+    if ((trackheader.track_id[0] != 'T')
+            || (trackheader.track_id[1] != 'R')
+            || (trackheader.track_id[2] != 'K'))
+        Error() << "corrupt SCP file";
+
+    std::cout << fmt::format("{}.{}: ", trackno(strack), headno(strack))
+        << std::flush;
+
+    Fluxmap fluxmap;
+    nanoseconds_t pending = 0;
+    for (int revolution = 0; revolution < header.revolutions; revolution++)
+    {
+        if (revolution != 0)
+            fluxmap.appendIndex();
+
+        uint32_t datalength = Bytes(trackheader.revolution[revolution].length, 4).reader().read_le32();
+        uint32_t dataoffset = Bytes(trackheader.revolution[revolution].offset, 4).reader().read_le32();
+
+        Bytes data(datalength*2);
+        inputFile.seekg(dataoffset + offset, std::ios::beg);
+        inputFile.read((char*) data.begin(), data.size());
+        check_for_error();
+
+        ByteReader br(data);
+        for (int cell = 0; cell < datalength; cell++)
+        {
+            uint16_t interval = br.read_be16();
+            if (interval)
+            {
+                fluxmap.appendInterval((interval + pending) * resolution / NS_PER_TICK);
+                fluxmap.appendPulse();
+                pending = 0;
+            }
+            else
+                pending += interval;
+        }
+    }
+
+    std::cout << fmt::format(" {} ms in {} output bytes\n",
+        fluxmap.duration() / 1e6, fluxmap.bytes());
+    sqlWriteFlux(outputDb, trackno(strack), headno(strack), fluxmap);
+}
+
+int mainConvertScpToFlux(int argc, const char* argv[])
+{
+    if (argc != 3)
+        syntax();
+    
+    inputFile.open(argv[1], std::ios::in | std::ios::binary);
+    if (!inputFile.is_open())
+		Error() << fmt::format("cannot open input file '{}'", argv[1]);
+
+    outputDb = sqlOpen(argv[2], SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE);
+    sqlPrepareFlux(outputDb);
+    sqlWriteIntProperty(outputDb, "version", FLUX_VERSION_CURRENT);
+    sqlStmt(outputDb, "BEGIN;");
+
+    read_header();
+    inputFile.seekg(sizeof(header), std::ios::beg);
+    for (unsigned i=header.start_track; i<=header.end_track; i++)
+        read_track(i);
+
+    sqlStmt(outputDb, "COMMIT;");
+    sqlClose(outputDb);
+    return 0;
+}
--- a/src/fluxengine.cc
+++ b/src/fluxengine.cc
@@ -6,6 +6,7 @@ extern command_cb mainErase;
 extern command_cb mainConvertCwfToFlux;
 extern command_cb mainConvertFluxToAu;
 extern command_cb mainConvertFluxToVcd;
+extern command_cb mainConvertScpToFlux;
 extern command_cb mainInspect;
 extern command_cb mainReadADFS;
 extern command_cb mainReadAESLanier;
@@ -83,6 +84,7 @@ static std::vector<Command> writeables =
 static std::vector<Command> convertables =
 {
    { "cwftoflux",     mainConvertCwfToFlux, "Converts CatWeasel stream files to flux.", },
+    { "scptoflux",     mainConvertScpToFlux, "Converts Supercard Pro stream files to flux.", },
    { "fluxtoau",      mainConvertFluxToAu,  "Converts (one track of a) flux file to an .au audio file.", },
    { "fluxtovcd",     mainConvertFluxToVcd, "Converts (one track of a) flux file to a VCD file.", },
 };
Author	SHA1	Message	Date
David Given	41070395c0	Merge pull request #105 from davidgiven/scp Add conversion support for Supercard Pro scp files.	2019-08-28 23:52:27 +02:00
David Given	4304d1eede	Add the Supercard Pro decoder.	2019-08-28 23:32:09 +02:00
David Given	46f1b0aef4	Merge pull request #104 from davidgiven/sampler Fix a nasty sampler bug leading to corrupted data	2019-08-28 00:23:21 +02:00
David Given	9923d67a7c	Merge pull request #103 from davidgiven/visualiser Add a simple disk visualiser.	2019-08-28 00:20:49 +02:00
David Given	99335a84fd	Add documentation for the visualiser.	2019-08-28 00:19:18 +02:00
David Given	c266779433	Fix a bug where index pulses where being turned into flux pulses on read, leading to completely broken data whenever an index pulse happened.	2019-08-27 23:58:07 +02:00
David Given	bdcc12cd53	Correctly import M_PI.	2019-08-27 23:08:13 +02:00
David Given	7988d0fe24	Don't replace bad sectors with more bad sectors. This means that if a sector is permanently bad, the one which wins and goes into the output SectorSet is the first one, not the last one. Frequently the last sector is truncated by the end of read and so it isn't useful.	2019-08-27 22:39:24 +02:00
David Given	27f5c294b1	The visualiser period can now be specified in a flag.	2019-08-27 01:21:49 +02:00
David Given	b9a53e0d1c	First draft of the visualiser.	2019-08-27 01:07:57 +02:00
David Given	f8b6d5e6fb	Merge.	2019-08-25 00:24:34 +02:00
David Given	04ff31c348	Add a flag to the IBM decoder to tell it to ignore the logical sector IDs (some formats don't use these).	2019-08-25 00:24:02 +02:00
David Given	77b4aebd1b	Fix crashing bug when reading Kryoflux streams.	2019-08-24 23:53:22 +02:00