ide rework again

- `VirtualBox-Wrapper.ps1` now takes 'up' or 'down' as opposed to a machine name. This allows start/stop of a virtualmachine.
- `VirtualBox-Wrapper.ps1` now relies on a gitignored `localenv.json` to work.
- `VirtualBox-Wrapper.ps1` can also optionally monitor the log file generated from the serial adapter in VirtualBox.
- `readme.md` updated to provide instructions on how to populate the `localenv.json` file.
- `tasks.json` updated to have a "Clean" task to --remove-orphans, the Build task depends on this.
- `tasks.json` updated to have a "Close VirtualBox" task, this runs the `virtualbox-wrapper.ps1` in 'down' mode. The Build task depends on this.
- `launch.json` updated to run the `VirtualBox-Wrapper.ps1` with the "-Command up" argument, instead of machine name.
- .gitignore updated to ignore any instances of `localenv.json`.

# Conflicts:
#	.gitignore

.drone.yml

@@ -1,66 +0,0 @@
-kind: pipeline
-type: docker
-name: build
-
-steps:
-  - name: build-image
-    image: plugins/docker
-    settings:
-      repo: t3hn3rd/asuro-build
-      tags: latest
-      dockerfile: Dockerfile
-      registry: docker.io
-      username:
-        from_secret: docker_username
-      password:
-        from_secret: docker_password
-
-  - name: compile
-    image: t3hn3rd/asuro-build:latest
-    depends_on:
-      - build-image
-    commands:
-      - git fetch --tags
-      - find . -type f -print0 | xargs -0 dos2unix
-      - chmod +x /drone/src/*.sh
-      - /drone/src/compile.sh
-      
-  - name: upload-iso-artifact
-    image: alpine/git
-    depends_on:
-      - compile
-    when:
-      branch:
-        - master
-    environment:
-      GITEA_TOKEN:
-        from_secret: gitea_token
-    commands:
-      - apk add --no-cache curl
-      - chmod +w Asuro.iso
-      - cp Asuro.iso "Asuro-$(git rev-parse --short HEAD).iso"
-      - echo "Uploading Asuro-$(git rev-parse --short HEAD).iso to Gitea Packages..."
-      - |
-         curl -X PUT "https://gitea.spexeah.com/api/packages/Spexeah/generic/asuro-iso/$(git rev-parse --short HEAD)/Asuro.iso" \
-         -H "Authorization: token $GITEA_TOKEN" --upload-file "Asuro-$(git rev-parse --short HEAD).iso"
-      - echo "Updating latest ISO reference..."
-      - |
-        curl -X DELETE https://gitea.spexeah.com/api/packages/Spexeah/generic/asuro-iso/latest/Asuro.iso \
-        -H "Authorization: token $GITEA_TOKEN" || echo "No previous latest version found."
-      - |
-        curl -X PUT https://gitea.spexeah.com/api/packages/Spexeah/generic/asuro-iso/latest/Asuro.iso \
-        -H "Authorization: token $GITEA_TOKEN" --upload-file "Asuro-$(git rev-parse --short HEAD).iso"
-
-  - name: msg status
-    image: appleboy/drone-discord
-    failure: ignore
-    depends_on:
-      - compile
-    when:
-      status: [success, failure, changed]
-    settings:
-      webhook_id:
-        from_secret: discord_webhook_id
-      webhook_token:
-        from_secret: discord_webhook_secret
-      message: "**Asuro Build**\n\n{{#success build.status}}✅ Build successful!\n\n{{else}}❌ Build failed!\n\n{{/success}}Repository: `{{repo.namespace}}/{{repo.name}}`\nBranch: `{{commit.branch}}`\nCommit: `{{commit.sha}}`\nAuthor: `{{commit.author}} <{{commit.email}}>`\n\nGitea Diff: [Link](<{{commit.link}}>)\nDrone Build: [Link](<{{build.link}}>)\n\nMessage: {{commit.message}}"

.gitlab-ci.yml

@@ -0,0 +1,73 @@
+stages:
+  - Compile Versions
+  - Compile Sources
+  - Link
+  - Generate Documentation
+  - Deploy
+
+cache:
+  - key: ${CI_COMMIT_REF_SLUG}
+    paths:
+      - lib/*.o
+      - bin/kernel.bin
+      - doc
+
+before_script:
+  - chmod +x *.sh
+
+versions:
+  stage: Compile Versions
+  script:
+    - ./compile_vergen.sh
+  artifacts:
+    paths:
+      - release/*.svg
+      - src/include/asuro.pas
+
+compile_sources:
+  stage: Compile Sources
+  script:
+    - rm -f lib/*.so
+    - ./compile_sources.sh
+  needs:
+    - versions
+
+link:
+  stage: Link
+  script:
+    - ./compile_stub.sh
+    - ./compile_link.sh
+  needs:
+    - versions
+    - compile_sources
+
+isogen:
+  stage: Deploy
+  script:
+    - ./compile_isogen.sh
+    - ./compile_sumgen.sh
+  artifacts:
+    paths:
+      - ./Asuro.iso
+      - ./release/checksum.svg
+  needs:
+    - link
+
+docgen:
+  stage: Generate Documentation
+  only:
+    - master
+    - develop
+  script:
+    - ./compile_sourcelist.sh
+    - ./compile_docs.sh
+    # Remove comments when we want to use gitlab pages.
+    #- cp doc public
+  allow_failure: true
+  artifacts:
+    paths:
+      - doc
+      #- public/*
+      #- ./sources.list
+  needs:
+    - versions

.mailmap

@@ -1,13 +0,0 @@
-# Map all Aaron identities to a single preferred identity
-Aaron Hance <[email protected]> aaron <aaron@6dbc8c32-bb84-406f-8558-d1cf31a0ab0c>
-Aaron Hance <[email protected]> aaronhance <[email protected]>
-Aaron Hance <[email protected]> aaron hance <[email protected]>
-Aaron Hance <[email protected]> Aaron <[email protected]>
-
-# Map all Kieron identities to a single preferred identity
-Kieron Morris <[email protected]> kieron <kieron@6dbc8c32-bb84-406f-8558-d1cf31a0ab0c>
-Kieron Morris <[email protected]> Kieron <[email protected]>
-Kieron Morris <[email protected]> t3hn3rd <[email protected]>
-
-# Map goose's multiple identities
-goose <goose@6dbc8c32-bb84-406f-8558-d1cf31a0ab0c> goose <[email protected]>

Dockerfile

@@ -9,14 +9,14 @@ RUN apt-get update && apt-get install -y \
 	apt-get clean my room
 
 SHELL ["/bin/bash", "-c"]
-ARG FPC_VERSION=3.2.2
+ARG FPC_VERSION=2.6.4
 RUN curl -sL https://sourceforge.net/projects/freepascal/files/Linux/$FPC_VERSION/fpc-$FPC_VERSION.i386-linux.tar/download | tar -xf - && \
 	pushd fpc-$FPC_VERSION.i386-linux && ./install.sh && popd && \
 	rm -rf fpc-$FPC_VERSION.i386-linux
 
 COPY compile.sh /compile.sh
 ADD https://raw.githubusercontent.com/fsaintjacques/semver-tool/master/src/semver /usr/bin/semver
-RUN chmod +x /usr/bin/semver
+RUN mkdir /code && chmod +x /usr/bin/semver
 WORKDIR /code
 RUN find . -type f -print0 | xargs -0 dos2unix
 ENTRYPOINT ["/bin/bash", "-c"]

compile.sh

@@ -20,30 +20,26 @@ runOrFail() {
 	fi
 }
 
-declare -a run_steps=(
-	"compile_stub.sh" "Failed to compile stub!"
-	"compile_vergen.sh" "Versions failed to compile"
-	"compile_sources.sh" "Failed to compile FPC Sources!"
-	"compile_link.sh" "Failed linking!"
-	"compile_isogen.sh" "Failed to create ISO!"
-)
+runOrFail $(pwd)/compile_stub.sh "Failed to compile stub!"
 
-for ((i=0; i<${#run_steps[@]}; i+=2))
-do
-	if [ "$ERRCOUNT" -eq "0" ]
-	then
-			script=$(pwd)/"${run_steps[$i]}"
-			message="${run_steps[$i+1]}"
-			runOrFail "$script" "$message"
-	fi
-done
+#Generate .pas with versioning headers.
+runOrFail $(pwd)/compile_vergen.sh "Versions failed to compile"
+
+#Compile all .pas sources
+runOrFail $(pwd)/compile_sources.sh "Failed to compile FPC Sources!"
+
+#Link into a binary.
+runOrFail $(pwd)/compile_link.sh "Failed linking!"
+
+#Generate an ISO with GRUB as the Bootloader.
+runOrFail ./compile_isogen.sh "Failed to create ISO!"
 
 #Call generate final artifacts based on failure or success of the above.
 if [ "$ERRCOUNT" -ne "0" ]
 then
-	. ./compile_finish.sh "failed"
+	./compile_finish.sh "failed"
 else
-	. ./compile_finish.sh "success"
+	./compile_finish.sh "success"
 fi
 
 cd ..

compile_sources.sh

@@ -4,4 +4,4 @@ echo "======================="
 echo " "
 echo "Compiling FPC Sources..."
 echo " "
-fpc -Aelf -gw -g -gl -n -vlewn -O3 -OpPENTIUM3 -Si -Sc -Sg -Xd -CX -XXs -CfSSE -CfSSE2 -Rintel -Pi386 -Tlinux -FElib/ -Fusrc/* -Fusrc/driver/* -Fusrc/driver/net/* src/kernel.pas
+fpc -Aelf -gw -n -va -O3 -Op3 -Si -Sc -Sg -Xd -CX -XXs -CfSSE -CfSSE2 -Rintel -Pi386 -Tlinux -FElib/ -Fusrc/* -Fusrc/driver/* -Fusrc/driver/net/* src/kernel.pas

doc/flatfs.md

@@ -0,0 +1,32 @@
+#Flat filesystem
+
+A super simple filesystem for asuro. Folders are emulated in filenames.
+
+Starts with disk info sector, sector 0 of volume
+
+---
+#### disk info
+
+jmp2boot        : ubit24;
+OEMName         : array[0..7] of char;
+version         : uint16 // numerical version of filesystem
+sectorCount      : uint16;
+fileCount       : uint16
+signature       : uint32 = 0x0B00B1E5
+
+
+the Rest of the sector is reserved
+
+---
+
+Starting from sector 1 is the file table. Table size is determined by entry size (64) * fileCount
+
+---
+####File entry
+
+name : array[0..59] of char //file name max 60 chars
+fileStart : 16bit // start sector of data
+fileSize : 16bit // data size in sectors
+
+---
+

linker.script

@@ -2,7 +2,7 @@ ENTRY(loader)
 SECTIONS
 {
   . = 0xC0100000;
-  kernel_start = .;
+
   .text : AT(ADDR(.text) - 0xC0000000)
   {
     text = .; _text = .; __text = .;
@@ -33,15 +33,4 @@ SECTIONS
     . = ALIGN(4096);
   }
   end = .; _end = .; __end = .;
-  kernel_end = .;
-
-  /DISCARD/ : {
-    *(.init_array*)
-    *(.fini_array*)
-    *(.ctors)
-    *(.dtors)
-    *(.eh_frame*)
-    *(.gcc_except_table*)
-    *(.note.GNU-stack)
-  }
 }

src/driver/interface/serial.pas

@@ -58,19 +58,16 @@ begin
 end;
 
 function sinb(port : uint16) : uint8;
-var
-     tmp : uint8;
 begin
      asm
           PUSH EAX
           PUSH EDX
           MOV DX, port
           IN AL, DX
-          MOV tmp, AL
+          MOV sinb, AL
           POP EDX
           POP EAX
      end;
-     sinb := tmp;
      io_wait;
 end;
 

src/driver/net/l5/dhcp.pas

@@ -491,26 +491,22 @@ begin
         
         { Create a new header to the use in our DHCP REQUEST packet }
         SendHeader:= createHeader();
-        CopyIPv4(@getIPv4Config^.Address[0], puint8(@SendHeader^.Client_IP[0]));
+        CopyIPv4(puint8(@Header^.Your_IP[0]), puint8(@SendHeader^.Client_IP[0]));
         CopyIPv4(puint8(@Header^.Server_IP[0]), puint8(@SendHeader^.Server_IP[0]));
         processHeader(SendHeader);
 
         { Setup Options }
         SendOptions:= newOptions();
-
         { Create a message type option and assign it the value REQUEST }
         SendMsgType:= ord(TDHCPMessageType.REQUEST);
         NewOption(SendOptions, TDHCPOpCode.DHCP_MESSAGE_TYPE, void(@SendMsgType), 1, false);
-
         { Create a Requested IP option and assign it the value from the OFFER packet header }
-        NewOption(SendOptions, TDHCPOpCode.REQUESTED_IP_ADDRESS, void(@Header^.Your_IP[0]), 4, false);
-
+        NewOption(SendOptions, TDHCPOpCode.REQUESTED_IP_ADDRESS, void(@SendHeader^.Client_IP[0]), 4, false);
         { Create a Server Identifier Option and assign it the value from the OFFER packet options }
         Option:= getOptionByOpcode(Options, TDHCPOpCode.SERVER_IDENTIFIER);
         if Option <> nil then begin
             NewOption(SendOptions, TDHCPOpCode.SERVER_IDENTIFIER, void(@Option^.Value[0]), 4, false);
         end;
-
         { Create a Parameter Request List, Request the following: Netmask, Gateway, DNS Name & DNS Server }
         RequestParams[0]:= Ord(TDHCPOpCode.SUBNET_MASK);
         RequestParams[1]:= Ord(TDHCPOpCode.ROUTER);
@@ -526,13 +522,9 @@ begin
         MAC:= getMAC();
         packetCtx:= PPacketContext(Kalloc(sizeof(TPacketContext)));
         packetCtx^.TTL:= 128;
-
-        { Copy over MAC - src: broadcast - dst: DHCP Server }
-        copyMAC(MAC, @packetCtx^.MAC.Source[0]);
         copyMAC(@BROADCAST_MAC[0], @packetCtx^.MAC.Destination[0]);
-        
-        { Copy over IP - src: NULL - dst: Broadcast }
-        CopyIPv4(@getIPv4Config^.Address[0], @packetCtx^.IP.Source[0]);
+        copyMAC(MAC, @packetCtx^.MAC.Source[0]);
+        copyIPv4(@NULL_IP[0], @packetCtx^.IP.Source[0]);
         copyIPv4(@BROADCAST_IP[0], @packetCtx^.IP.Destination[0]);
 
         { Setup UDPContext (UDP) & copy in the correct details }
@@ -578,7 +570,7 @@ begin
 
     { Check the frame is for us and then process }
     MAC:= getMAC;
-    if MACEqual(@context^.PacketContext^.MAC.Destination[0], MAC) or MACEqual(@context^.PacketContext^.MAC.Destination[0], BROADCAST_MAC) then begin
+    if MACEqual(@context^.PacketContext^.MAC.Destination[0], MAC) then begin
         Outputln('DHCP','Frame is addressed to us.');
         { Check the message type is client specific }
         If Header^.Message_Type = $02 then begin
@@ -663,7 +655,7 @@ begin
         copyMAC(@BROADCAST_MAC[0], @packetCtx^.MAC.Destination[0]);
         MAC:= getMAC;
         copyMAC(MAC, @packetCtx^.MAC.Source[0]);
-        CopyIPv4(@getIPv4Config^.Address[0], @packetCtx^.IP.Source[0]);
+        copyIPv4(@NULL_IP[0], @packetCtx^.IP.Source[0]);
         copyIPv4(@BROADCAST_IP[0], @packetCtx^.IP.Destination[0]);
 
         { Setup UDPContext (UDP) }

src/driver/storage/MBR.pas

@@ -0,0 +1,81 @@
+{
+    Driver->Storage->MBR Master boot record 
+
+    @author(Aaron Hance [email protected])
+}
+unit mbr;
+
+interface
+
+uses
+    tracer;
+
+type
+
+    PMaster_Boot_Record = ^TMaster_Boot_Record;
+    PPartition_table = ^TPartition_table;
+
+    TPartition_table = bitpacked record 
+        attributes     : uint8;
+        CHS_start      : array[0..2] of uint8;
+        system_id      : uint8;
+        CHS_end        : array[0..2] of uint8;
+        LBA_start      : uInt32;
+        sector_count   : uInt32;
+    end;
+
+    TMaster_Boot_Record = bitpacked record 
+        bootstrap   : array[0..439] of uint8;
+        signature   : uint32;
+        rsv         : uint16;
+        partition   : array[0..3] of TPartition_table;
+        boot_sector : uint16;
+    end;
+
+    T24bit = array[0..2] of uint8;
+
+    function get_bootable(partition_table : PPartition_table) : boolean;
+    procedure set_bootable(partition_table : PPartition_table);
+    procedure setup_partition(partition_table : PPartition_table; address : uint32; sectorSize : uint32);
+
+implementation
+
+{ convert LBA address to CHS address}
+function LBA_2_CHS(lba : uint32) : T24bit;
+var
+    dat : T24bit;
+begin
+  //TODO impliment procedure
+  LBA_2_CHS := dat;
+end;
+
+{ Set a partition struct to be bootable}
+procedure set_bootable(partition_table : PPartition_table);
+begin
+    push_trace('MBR.set_bootable');
+    //set the bootble bit in attributes
+    partition_table^.attributes := (partition_table^.attributes and $80);
+end;
+
+{ Check a partitions bootable bit }
+function get_bootable(partition_table : PPartition_table) : boolean;
+begin
+    push_trace('MBR.get_bootable');
+    //get the bootble bit in attributes
+    get_bootable := (partition_table^.attributes and $80) = $80;
+end;
+
+{ Setup a partition table struct }
+procedure setup_partition(partition_table : PPartition_table; address : uint32; sectorSize : uint32);
+begin
+    push_trace('MBR.setup_partition');
+    //set values in both LBA and CHS addressing schemes
+    partition_table^.LBA_start := address;
+    partition_table^.sector_count := sectorSize;
+    partition_table^.CHS_start := LBA_2_CHS(address);
+    partition_table^.CHS_start := LBA_2_CHS(address + sectorSize);  
+    push_trace('MBR.setup_partition.end');
+end;
+
+
+end.

src/driver/storage/fat32.pas

@@ -10,14 +10,16 @@ interface
 
 uses
     console,
-    storagemanagement,
-    util, terminal,
+    util,
+    terminal,
     lmemorymanager,
     strings,
     lists,
     tracer,
     serial,
-    rtc;
+    rtc,
+    volumemanager,
+    storagetypes;
 
 type 
 
@@ -89,7 +91,7 @@ var
     filesystem : TFilesystem;
 
 procedure init;
-procedure create_volume(disk : PStorage_Device; sectors : uint32; start : uint32; config : puint32);
+procedure create_volume(volume : PStorage_Volume; sectors : uint32; start : uint32; config : puint32);
 procedure detect_volumes(disk : PStorage_Device);
 //function writeDirectory(volume : PStorage_volume; directory : pchar; attributes : uint32) : uint8; // need to handle parent table cluster overflow, need to take attributes
 //function readDirectory(volume : PStorage_volume; directory : pchar; listPtr : PLinkedListBase) : uint8; //returns: 0 = success, 1 = dir not exsist, 2 = not directory, 3 = error
@@ -751,7 +753,7 @@ end;
 
 //TODO check directory commands for errors with a clean disk
 
-procedure create_volume(disk : PStorage_Device; sectors : uint32; start : uint32; config : puint32);
+procedure create_volume(volume : PStorage_Volume; sectors : uint32; start : uint32; config : puint32);
 var
     buffer     : puint32;
     bt: puint32;
@@ -772,9 +774,18 @@ var
     programFileArray   : byteArray8 = ('P','R','O','G','R','A','M','S');
     rootCluster   : uint32 = 1;
 
+    sysArray : byteArray8 = ('S','Y','S','T','E','M',' ',' ');
+    progArray : byteArray8 = ('P','R','O','G','R','A','M','S');
+    userArray : byteArray8 = ('U','S','E','R',' ',' ',' ',' ');
+
+    status : puint32;
+    disk : PStorage_device;
+
 begin //maybe increase buffer size by one?
     push_trace('fat32.create_volume()');
 
+    disk := volume^.device;
+
     // zeroBuffer:= puint32(kalloc( disk^.sectorSize * 4 ));
     // memset(uint32(zeroBuffer), 0, disk^.sectorSize * 4);
 
@@ -811,7 +822,7 @@ begin //maybe increase buffer size by one?
     bootRecord^.jmp2boot        := $0; //TODO impliment boot jump
     bootRecord^.OEMName         := asuroArray;
     bootRecord^.sectorSize      := disk^.sectorsize;
-    bootRecord^.spc             := config^;
+    bootRecord^.spc             := 1;
     bootRecord^.rsvSectors      := 32; //32 is standard
     bootRecord^.numFats         := 1;
     bootRecord^.mediaDescp      := $F8;
@@ -873,8 +884,16 @@ begin //maybe increase buffer size by one?
     
     disk^.writecallback(disk, dataStart + (config^ * rootCluster), 1, buffer);
 
+    memset(uint32(buffer), 0, disk^.sectorsize);
+
+    status := puint32(kalloc(sizeof(uint32)));
+    writeDirectory(volume, '', sysArray, $10, status, '');
+
+
     kfree(buffer);
 
+
+
 end;
 
 procedure detect_volumes(disk : PStorage_Device);
@@ -903,11 +922,11 @@ begin
     if (puint32(buffer)[127] = $55AA) and (PBootRecord(buffer)^.bsignature = $29) then begin //TODO partition table
         console.writestringln('FAT32: volume found!');
         volume^.device:= disk;
-        volume^.sectorStart:= 1;
+        volume^.sectorStart:= 1; //THIS MAKE SURE IF NOT FUCKY, cos im getting info from 2
         volume^.sectorSize:= PBootRecord(buffer)^.sectorSize;
         volume^.freeSectors:= 1000000; //TODO implement get free sectors need FSINFO implemented first
         volume^.filesystem := @filesystem;
-        storagemanagement.register_volume(disk, volume);
+        // storagemanagement.register_volume(disk, volume); TODO repalce with new thing
     end;
 
     kfree(buffer);
@@ -917,6 +936,7 @@ procedure init();
 begin
     push_trace('fat32.init()');
     filesystem.sName:= 'FAT32'; 
+    filesystem.system_id:= $01; 
     filesystem.readDirCallback:= @readDirectoryGen;
     filesystem.createDirCallback:= @writeDirectoryGen;
     filesystem.createcallback:= @create_volume;
@@ -924,7 +944,7 @@ begin
     filesystem.writecallback:= @writeFile;
     filesystem.readcallback := @readFile;
 
-    storagemanagement.register_filesystem(@filesystem);
+    volumemanager.register_filesystem(@filesystem);
 end;
 
 end.

src/driver/storage/idetypes.pas

@@ -0,0 +1,140 @@
+//  Copyright 2021 Aaron Hance
+//
+//  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.
+
+{ 
+	Driver->Storage->IDE->idetypes - IDE device types and constants.
+	
+	@author(Aaron Hance <[email protected]>)
+}
+unit idetypes;
+
+interface
+
+const
+
+    ATA_SR_BUSY = $80; //BUSY
+    ATA_SR_DRDY = $40; //DRIVE READY
+    ATA_SR_DF   = $20; //DRIVE WRITE FAULT
+    ATA_SR_DSC  = $10; //DRIVE SEEK COMPLETE
+    ATA_SR_DRQ  = $08; //DATA REQUEST READY
+    ATA_SR_CORR = $04; //CORRECTED DATA
+    ATA_SR_IDX  = $02; //INLEX
+    ATA_SR_ERR  = $01; //ERROR
+
+    ATA_ER_BBK   = $80; //BAD SECTOR
+    ATA_ER_UNC   = $40; //UNCORRECTABLE DATA
+    ATA_ER_MC    = $20; //NO MEDIA
+    ATA_ER_IDNF  = $10; //ID MARK NOT FOUND
+    ATA_ER_MCR   = $08; //NO MEDIA
+    ATA_ER_ABRT  = $04; //COMMAND ABORTED
+    ATA_ER_TK0NF = $02; //TRACK 0 NOT FOUND
+    ATA_ER_AMNF  = $01; //NO ADDRESS MARK
+
+    ATA_CMD_READ_PIO        = $20; 
+    ATA_CMD_READ_PIO_EXT    = $24; 
+    ATA_CMD_READ_DMA        = $C8; 
+    ATA_CMD_READ_DMA_EXT    = $25; 
+    ATA_CMD_WRITE_PIO       = $30; 
+    ATA_CMD_WRITE_PIO_EXT   = $34; 
+    ATA_CMD_WRITE_DMA       = $CA; 
+    ATA_CMD_WRITE_DMA_EXT   = $35; 
+    ATA_CMD_CACHE_FLUSH     = $E7; 
+    ATA_CMD_CACHE_FLUSH_EXT = $EA; 
+    ATA_CMD_PACKET          = $A0; 
+    ATA_CMD_IDENTIFY_PACKET = $A1; 
+    ATA_CMD_IDENTIFY        = $EC; 
+
+    ATAPI_CMD_READ  = $A8;
+    ATAPI_CMD_EJECT = $1B;
+
+    ATA_IDENT_DEVICETYPE   = $0;    
+    ATA_IDENT_CYLINDERS    = $2;    
+    ATA_IDENT_HEADS        = $6;    
+    ATA_IDENT_SECOTRS      = $12;    
+    ATA_IDENT_SERIAL       = $20;    
+    ATA_IDENT_MODEL        = $54;    
+    ATA_IDENT_CAPABILITIES = $98;    
+    ATA_IDENT_FIELDVALID   = $106;   
+    ATA_IDENT_MAX_LBA      = $120;   
+    ATA_IDENT_COMMANDSETS  = $164;       
+    ATA_IDENT_MAX_LBA_EXT  = $200;
+
+    ATA_REG_DATA       = $00;
+    ATA_REG_ERROR      = $01;
+    ATA_REG_FEATURES   = $01;
+    ATA_REG_SECCOUNT  = $02;
+    ATA_REG_LBA0       = $03;
+    ATA_REG_LBA1       = $04;
+    ATA_REG_LBA2       = $05;
+    ATA_REG_HDDEVSEL   = $06;
+    ATA_REG_COMMAND    = $07;
+    ATA_REG_STATUS     = $07;
+    ATA_REG_SECCOUNT1  = $08;
+    ATA_REG_LBA3       = $09;
+    ATA_REG_LBA4       = $0A;
+    ATA_REG_LBA5       = $0B;
+    ATA_REG_CONTROL    = $0C;
+    ATA_REG_ALTSTATUS  = $0C;
+    ATA_REG_DEVADDRESS = $0D; 
+
+    ATA_DEVICE_MASTER = $A0;
+    ATA_DEVICE_SLAVE = $B0;
+
+    ATA_PRIMARY_BASE = $1F0;
+    ATA_PRIMARY_BASE1 = $3F6;
+    ATA_SECONDARY_BASE = $170; //todo check this
+    ATA_SECONDARY_BASE1 = $376; //todo check this
+
+    ATA_INTERRUPT_PRIMARY = $3F6;
+    ATA_INTERRUPT_SECONDARY = $376;
+
+type
+    TPortMode = (P_READ, P_WRITE);
+
+    TIdentResponse = array[0..255] of uint16;
+    PIdentResponse = ^TIdentResponse;
+
+    TIDE_Channel_Registers = record
+        base    : uint16;
+        ctrl    : uint16;
+        bmide   : uint16;
+        noInter : uint8
+    end;
+
+    TIDE_Status = bitpacked record 
+        Busy  : Boolean;
+        Ready : Boolean;
+        Fault : Boolean;
+        Seek  : Boolean;
+        DRQ   : Boolean;
+        CORR  : Boolean;
+        IDDEX : Boolean;
+        ERROR : Boolean;
+    end;
+    PIDE_Status = ^TIDE_Status;
+
+    TIDE_Device = record
+        exists       : boolean;
+        isPrimary    : boolean;
+        isMaster     : boolean;
+        isATAPI      : boolean;
+        status       : TIDE_Status;
+        base         : uint16;
+        info         : PIdentResponse;
+    end;
+
+
+implementation
+  
+end.