Taxiway
	for PS1.3

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For 747IPC downloads, go to the 747IPC for PS1.3 and PS1.3A page.

Latest version of TWY/TF: Version 3.0: 31 January 2003. Extensively rewritten version of TWY to make use of new code techniques. TWY will now auto-recognise PS1.3A/1.3A-EE3. TF now uses a TF.INI configuration file instead of the Windows registry. VMPEEK.DLL and IPC.VxD all updated to latest versions. Compatible with all versions of Microsoft Windows (tm). Includes a bumper SCENERY.TWY file with 73 airports, courtesy of Jeroen Hoppenbrouwers.

Search the Aerowinx forum for help on setting up VDMSound on Windows NT/2000/XP systems, or see here for a short discussion.

Visit Jeroen's TWY site, where he gathers sector files from various people and packages a ready-to-use SCENERY.TWY file.

31 January 2003: Download TF30.ZIP package for PS1.3/1.3A/EE3 (224,418 bytes).

Older versions:
TF25.ZIP package for PS1.3/1.3A (222,629 bytes). 25 Jul 2002.
TF04_VXD_A.ZIP for PS1.3A (12,258 bytes). 4 Feb 2002.
TF16_VXD.ZIP for PS1.3 (9,877 bytes). 16 Nov 2001
TF16_VXD_A.ZIP for PS1.3A (9,876 bytes). 16 Nov 2001.
TF23.ZIP for PS1.3 (8,347 bytes). 23 Sep 2001. Non-VxD.
TF23A.ZIP for PS1.3A (8,346 bytes). 23 Sep 2001. Non-VxD.

TWY14.ZIP complete package (75,162 bytes). Includes a small SCENERY.TWY file with 20 airports.
TWY14A.ZIP .COM file only (4,169 bytes).
TWY14J.ZIP .COM file only (4,275 bytes). This is a special version made at the request of JH, featuring a 6 Hz refresh rate and a dark grey lead line to aid turns.

Download: TWY3D08.ZIP .COM file only (4,100 bytes).

Download: TAD27.ZIP Taxiway Adder .EXE file only (3,511 bytes).

Taxiway (TWY in short) is yet another PS1 add-on program that displays airport taxiways in a plan view on the lower EICAS screen.
You can program your own airport diagrams using the TWY Maker tool (under development).
Traffic (TF) is yet another add-on program that injects online air traffic (from compatible virtual ATC networks) into the TWY display. TF Is Not TCAS !
The Taxiway Adder (TAD) is a Windows program that converts and compiles a list of ProController .SCT sector files into the SCENERY.TWY database file for use with TWY.
Taxiway 3D is an experimental development that renders the same .SCT sector files into 3D "out-the-window" scenery.

Screenshots:
TWY/TF at KORD showing traffic diamonds:

PS1 taxiing down taxiway Alpha at YSSY Sydney:

TWY-3D on final approach RW06 at EHAM Amsterdam:

Airports with converted ProController sector (.SCT) files

EBBR EDDF EDDH EDDK EDDM EDDT EGLL EHAM
LOWI LOWW LFML LFPG
KBOS KIAD KJFK KORD
YBBN YMML YPAD YSCB YSSY

System requirements
Taxiway and Traffic require the following:

• Precision Simulator versions 1.3, 1.3A or 1.3A-EE3.
• at least 26 kilobytes free conventional or upper memory space, in addition to that required by PS1.3.
• enough XMS (eXtended Memory System) memory for the SCENERY.TWY file.
  XMS memory is provided by HIMEM.SYS, and should automatically be available under Windows(tm).

Traffic and Taxiway Adder require Windows 95 and above, or Windows NT 4 and above to run.

Installation and usage

1. Install TWY in any directory you like. Make sure the SCENERY.TWY file is in the same directory as the TWY.COM program file.
2. If running in Windows: open up a DOS prompt window so that you obtain a prompt to enter commands at.
3. Start TWY with the command lh twy. The lh (LoadHigh) loads TWY into Upper Memory if 26kb are available. Otherwise TWY will be loaded into conventional (lower) memory.
4. Now start PS1 using ps. (Use 747 if not running in Windows. See page 10 of the PS1.3 Operations Manual.)
5. When PS1 is loaded up, blank the lower EICAS. Now press F11 to bring up the TWY display on the lower EICAS. See screenshot above.

   TWY uses the active Origin and Destination airport entries on the CDU ROUTE page to determine which airport to display. On startup, the Origin airport will be displayed. To switch to the Destination airport, press Ctrl-F12.

   If your airplane is not positioned at the airport, you will not see the taxiway display !

   The displayed airport code will be '----' if the selected airport does not exist in the SCENERY.TWY database.

6. To zoom in on the map display, press F12. The zoom factor is indicated on the bottom right corner of the EICAS screen. It is initially 12 (large-scale), and each press of F12 will zoom in by a factor of 1, until factor 8 (small-scale) is reached. A subsequent keypress will revert back to factor 12.
7. Press F11 to hide the TWY display.
8. After quitting PS1, type twy r to remove TWY from memory.

   The entire process of starting TWY then PS1 from the same DOS window can be automated by means of a batch (.BAT) file. I have supplied one example batch file in the TWYxx.ZIP, called "T.BAT", which should work in most cases. You are at liberty to modify this file to suit your own system setup.

1. Start TWY/TF then PS1 in the manner described above. You need the SCENERY.TWY file as in point 1 above. Then start TF.EXE, which feeds TWY/TF with online traffic data, from inside Windows.
2. Zoom factors from 320 to 5 indicate approximate range in NM from the airplane symbol to the top of the display. Taxiway scenery is not displayed. Zoom factors from 4 to 0 are high magnifications allowing display of taxiway scenery.
3. Press Alt-F12 to zoom out, F12 to zoom in.
4. Air traffic diamonds will be displayed at all times, independent of airport code selection in TWY and zoom factor.
5. Diamond colours and their meanings:
   • Grey: traffic within 500 feet of your altitude.
   • Blue: traffic more than 500 feet above you.
   • Brown: traffic more than 500 feet below you.
6. Press Alt-F11 to toggle high-speed (6 Hz) refresh mode on and off.

1. Make sure TAD is located in the same directory/folder as all your SCT files.
2. Make sure that every source SCT file is renamed to the format "XXXX.SCT" where "XXXX" represents the 4-character ICAO airport code.
3. Start TAD from the DOS prompt or from the Windows Start menu "Run..." item, appending a list of airport ICAO codes for which you want to convert. Leave out the the ".SCT" suffix.
   eg. TAD ymml wsss klax
   assuming that YMML.SCT, WSSS.SCT and KLAX.SCT exist.
4. TAD will convert these files and create a new SCENERY.TWY output file, or add to an existing SCENERY.TWY if it exists.

1. TWY3D requires SCENERY.TWY, found in the complete TWY package.
2. Control keystrokes:
   • Shift-F11 to toggle the 3D display on/off.
   • Shift-F12 to toggle the origin/destination airport display.
   • Ctrl-F11/F12 to zoom out/in.
   • ScrollLock will toggle on/off the view direction feature. When ScrollLock is active, the following numeric keypad keys are effective:

     Keystroke	View direction
     4	10 o'clock (60 degrees left)
     7	11 o'clock (30 degrees left)
     8	straight ahead
     9	1 o'clock (30 degrees right)
     6	2 o'clock (60 degrees right)

Sector file sources
http://www.avsim.com/library/Sector_Files/
Jeroen's TWY site, where he gathers sector files from various people and packages a ready-to-use SCENERY.TWY file.

Credits
Thanks to Jim Dukat for his advice in the early stages of development,
to Dusan Lacko & Martin Erdelen for bravely exposing their PCs to the risks of untested code,
to Jeroen Hoppenbrouwers for his wild ideas and staunch stand on free software,
to all creators of the ProController ground maps for their lovely creations,
to Arturo Sandoval whose music occupied my mind during the times when I was cracking a tough bug,
and to Hardy Himself for writing PS1.3 as a DOS app giving hackers like me a reason to live on...