From cff2b420b81f00600315e687e23f53af62dbafa0 Mon Sep 17 00:00:00 2001 From: Svjatoslav Agejenko Date: Sat, 2 Aug 2025 01:39:35 +0300 Subject: [PATCH] Improve lptdrv documentation --- 2D GFX/Fractals/index.html | 40 ++--- 2D GFX/Spirals/index.html | 54 +++--- 2D GFX/Textures/index.html | 34 ++-- 3D GFX/3D Synthezier/doc/index.html | 162 +++++++++--------- 3D GFX/Miscellaneous/index.html | 54 +++--- 3D GFX/Space/index.html | 36 ++-- Math/Plotting/index.html | 36 ++-- Math/Simulation/index.html | 64 +++---- Math/Truth table/index.html | 64 +++---- Miscellaneous/Mouse driver/index.html | 30 ++-- .../Digital data over analog audio/index.html | 24 +-- Networking/LPT communication driver/index.org | 61 +++++++ .../LPT communication driver/lptdrv.txt | 23 --- 13 files changed, 360 insertions(+), 322 deletions(-) create mode 100755 Networking/LPT communication driver/index.org delete mode 100644 Networking/LPT communication driver/lptdrv.txt diff --git a/2D GFX/Fractals/index.html b/2D GFX/Fractals/index.html index 1021fda..010c92b 100644 --- a/2D GFX/Fractals/index.html +++ b/2D GFX/Fractals/index.html @@ -3,7 +3,7 @@ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> - + Fractals @@ -210,11 +210,11 @@

Table of Contents

@@ -236,8 +236,8 @@ -
-

1. Fractal circles

+
+

1. Fractal circles

This QBasic program generates a visually captivating spiral fractal @@ -247,7 +247,7 @@ geometry, recursive programming, and graphical design.

-
+

fractal%20circles.png

@@ -266,8 +266,8 @@ indefinitely.
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-

2. Fractal circles animated

+
+

2. Fractal circles animated

This QBasic program creates an animated fractal composed of circles, @@ -287,29 +287,29 @@ system to control the animation's progression.

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-

3. Fractal of squares

+
+

3. Fractal of squares

This QBasic program generates and displays a fractal pattern composed of squares.

-
+

fractal%20squares,%201.png

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+

fractal%20squares,%202.png

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-

4. Fractal of squares animated

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+

4. Fractal of squares animated

This QBasic program generates an animated fractal pattern composed of @@ -331,8 +331,8 @@ resulting in a dynamic and ever-changing geometric pattern.

-
-

5. Fractal of trees

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+

5. Fractal of trees

QBasic program that generates a visually appealing fractal tree @@ -355,7 +355,7 @@ resembles a tree, with branches that grow and change over time.

-

Created: 2025-07-31 to 03:14

+

Created: 2025-07-31 to 15:56

Validate

diff --git a/2D GFX/Spirals/index.html b/2D GFX/Spirals/index.html index 9292d99..de6975b 100644 --- a/2D GFX/Spirals/index.html +++ b/2D GFX/Spirals/index.html @@ -3,7 +3,7 @@ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> - + Spiral series @@ -210,12 +210,12 @@

Table of Contents

@@ -236,11 +236,11 @@ } -
-

1. Spiral with increasing density

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+

1. Spiral with increasing density

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+

spiral.png

@@ -320,11 +320,11 @@ userInput$ = INPUT$(1)
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-

2. Spiral with varying height

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+

2. Spiral with varying height

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+

spiral, 2.png

@@ -391,11 +391,11 @@ a$ = INPUT$(1)
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-

3. Shaded spiral

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+

3. Shaded spiral

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spiral, 3.png

@@ -497,8 +497,8 @@ a$ = INPUT$(1)
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-

4. Sphere forming spiral

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4. Sphere forming spiral

Similar to previous spiral, Line segments are connected between the @@ -507,7 +507,7 @@ multiple linked spherical shapes. Initially point cloud in shown:

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spiral, 4, 1.png

@@ -517,7 +517,7 @@ In the next step, points are connected using lines:

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spiral, 4, 2.png

@@ -622,11 +622,11 @@ a$ = INPUT$(1)
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-

5. Textured spherical spiral

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+

5. Textured spherical spiral

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spiral, 5.png

@@ -749,11 +749,11 @@ a$ = INPUT$(1)
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6. Textured and shaded spherical spiral

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+

6. Textured and shaded spherical spiral

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spiral, 6.png

@@ -937,7 +937,7 @@ yStep2 = (oppositePointY2 - oppositePointY1) / stepCount
-

Created: 2025-07-31 to 03:14

+

Created: 2025-07-31 to 15:57

Validate

diff --git a/2D GFX/Textures/index.html b/2D GFX/Textures/index.html index 8ff399e..c873741 100644 --- a/2D GFX/Textures/index.html +++ b/2D GFX/Textures/index.html @@ -3,7 +3,7 @@ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> - + Algorithmic textures @@ -210,11 +210,11 @@

Table of Contents

@@ -233,8 +233,8 @@ } -
-

1. Circular waves

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+

1. Circular waves

This QBasic program creates visually captivating circular wave @@ -313,8 +313,8 @@ algorithms can produce intricate and visually appealing results.

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-

2. Diamond square clouds

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+

2. Diamond square clouds

This QBasic program demonstrates the Diamond-Square algorithm, a @@ -429,8 +429,8 @@ WAITa$ = INPUT$(1)

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-

3. Old paper

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+

3. Old paper

This QBasic program generates a procedural texture that simulates the @@ -527,8 +527,8 @@ inputKey$ = INPUT$(1)

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4. Wood

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+

4. Wood

This QBasic program creates a visually appealing simulation of a wood @@ -622,8 +622,8 @@ exitKey$ = INPUT$(1)

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-

5. Yellow flame

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+

5. Yellow flame

"Yellow Flame" is a visually captivating program written in QBasic @@ -702,7 +702,7 @@ userInput$ = INPUT$(1)

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Created: 2025-07-31 to 03:14

+

Created: 2025-07-31 to 15:57

Validate

diff --git a/3D GFX/3D Synthezier/doc/index.html b/3D GFX/3D Synthezier/doc/index.html index 4c35d3c..7b90d14 100644 --- a/3D GFX/3D Synthezier/doc/index.html +++ b/3D GFX/3D Synthezier/doc/index.html @@ -3,7 +3,7 @@ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> - + 3D Synthezier @@ -1103,39 +1103,39 @@ hsAddReviewPanels();

Table of Contents

@@ -1157,8 +1157,8 @@ hsAddReviewPanels(); -
-

1. Operating principle

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+

1. Operating principle

Parses scene definition language and creates 3D world based on @@ -1221,60 +1221,60 @@ They were produced by importing generated -

1.1. Rectangular city

+
+

1.1. Rectangular city

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+

rectangular city, 1.jpeg

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+

rectangular city, 2.jpeg

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rectangular city, 3.jpeg

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-

1.2. Hexagonal city

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+

1.2. Hexagonal city

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+

hexagonal city, 1.jpeg

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+

hexagonal city, 2.jpeg

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hexagonal city, 3.jpeg

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-

2. Scene description language

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+

2. Scene description language

See also examples.

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-

2.1. here

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+

2.1. here

 here
@@ -1285,8 +1285,8 @@ defines new segment
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-

2.2. p

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2.2. p

 p  x y z
@@ -1297,8 +1297,8 @@ defines new point
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-

2.3. f

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2.3. f

 f  p1 p2 p3 p4
@@ -1309,8 +1309,8 @@ defines new polygon,  p4  may be unused
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-

2.4. warn

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+

2.4. warn

 warn  <message>
@@ -1321,8 +1321,8 @@ displays warning message, and wait for key
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-

2.5. end

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+

2.5. end

 end
@@ -1333,8 +1333,8 @@ terminates parser
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-

2.6. mtl

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+

2.6. mtl

 mtl  material
@@ -1345,8 +1345,8 @@ selects material
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-

2.7. mtlrnd

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+

2.7. mtlrnd

 mtlrnd  material ...
@@ -1357,8 +1357,8 @@ selects random material from list
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2.8. obj

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+

2.8. obj

 obj  object xz45 xy20 x+3 y*2
@@ -1373,14 +1373,14 @@ directly from file, and not chached, to allow loading of greater than
 

 
 
-

+

 
rotation.png
-
-

2.9. rnd

+
+

2.9. rnd

 rnd  p^1^2^3 p^7^2^1
@@ -1391,8 +1391,8 @@ select random command to execute, ^ will be converted to spaces.
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-

2.10. #

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+

2.10. #

 # whatever text
@@ -1403,8 +1403,8 @@ comment
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-

2.11. out

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+

2.11. out

 out  file
@@ -1415,8 +1415,8 @@ specify output file name, must be first command
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-

2.12. set

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+

2.12. set

 set  variable  contents
@@ -1428,8 +1428,8 @@ string. max variables is 100. first is 0.
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-

2.13. variables usage

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+

2.13. variables usage

 anycommand %1 anything
@@ -1440,8 +1440,8 @@ inserts variable 1 contents info line
-
-

2.14. cmp

+
+

2.14. cmp

 cmp  flag string1 string2
@@ -1452,8 +1452,8 @@ compares strings, and inserts TRUE to flag, if they are equal, else inserts FALS
-
-

2.15. ?

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+

2.15. ?

 ?flag anycommand
@@ -1468,8 +1468,8 @@ exapmle: ?3 obj car z*2 xy45
-
-

2.16. dum

+
+

2.16. dum

 dum
@@ -1482,16 +1482,16 @@ dummy function, does notheing
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-

3. Installation

+
+

3. Installation

Edit bin/3dparse.bas file and update include path in there.

-
-

3.1. System requirements

+
+

3.1. System requirements

@@ -1522,8 +1522,8 @@ Edit bin/3dparse.bas file and update include path in there. -
-

3.2. Directory layout

+
+

3.2. Directory layout

bin
@@ -1540,8 +1540,8 @@ Edit bin/3dparse.bas file and update include path in there.
-
-

4. Usage

+
+

4. Usage

Make sure you have QB binaries in your PATH. Execute @@ -1566,7 +1566,7 @@ Visualize scene with your favourite renderer.

-

Created: 2025-07-31 to 03:15

+

Created: 2025-07-31 to 15:58

Validate

diff --git a/3D GFX/Miscellaneous/index.html b/3D GFX/Miscellaneous/index.html index 92965a5..97720fc 100644 --- a/3D GFX/Miscellaneous/index.html +++ b/3D GFX/Miscellaneous/index.html @@ -3,7 +3,7 @@ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> - + Miscellaneous 3D graphics demos @@ -210,14 +210,14 @@

Table of Contents

@@ -238,8 +238,8 @@ } -
-

1. Rotating exclamation mark

+
+

1. Rotating exclamation mark

Wireframe 3D model of a rotating exclamation mark. @@ -258,8 +258,8 @@ Wireframe 3D model of a rotating exclamation mark.

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-

2. 3D bouncing ball

+
+

2. 3D bouncing ball

This QBasic program creates a visually engaging 3D animation of a @@ -280,8 +280,8 @@ of early computer graphics techniques.

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-

3. 3D text in a room

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+

3. 3D text in a room

Wireframe 3D text hanging in a wireframe 3D room. User can look and @@ -301,8 +301,8 @@ fly around in all directions.

-
-

4. 3D bouncing cubes on grid floor

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+

4. 3D bouncing cubes on grid floor

3D wireframe cubes bouncing on a grid floor, creating an immersive and @@ -322,8 +322,8 @@ dynamic visual effect.

-
-

5. Matrix math for rotation in 3D space

+
+

5. Matrix math for rotation in 3D space

Instead of combining simple 2D rotors, pixels in this 3D space are @@ -343,8 +343,8 @@ rotated by using matrix multiplications.

-
-

6. Maze explorer

+
+

6. Maze explorer

The Evolving 3D Maze Explorer is a QBasic program that generates and @@ -355,7 +355,7 @@ changes as they navigate through it.

-
+

Maze%20explorer.png

@@ -366,8 +366,8 @@ changes as they navigate through it.
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-

7. Tank animation

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+

7. Tank animation

Animated tank driving through the bridge back and forward. User can @@ -387,8 +387,8 @@ look and fly around in all directions.

-
-

8. Tiled room

+
+

8. Tiled room

Room with some tiles on the wall and on the floor. User can freely fly @@ -409,7 +409,7 @@ around.

-

Created: 2025-07-31 to 03:15

+

Created: 2025-07-31 to 15:58

Validate

diff --git a/3D GFX/Space/index.html b/3D GFX/Space/index.html index ad77b42..e41489b 100644 --- a/3D GFX/Space/index.html +++ b/3D GFX/Space/index.html @@ -3,7 +3,7 @@ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> - + Space themed 3D graphics @@ -210,10 +210,10 @@

Table of Contents

@@ -234,8 +234,8 @@ } -
-

1. Galaxy explorer

+
+

1. Galaxy explorer

This QBasic program renders a navigable 3D point cloud galaxy, @@ -245,7 +245,7 @@ galaxy with stars distributed in a spiral pattern.

-
+

Galaxy%20explorer.png

@@ -256,8 +256,8 @@ galaxy with stars distributed in a spiral pattern.
-
-

2. Rocket simulator

+
+

2. Rocket simulator

QBasic program that simulates the takeoff and flight of a rocket from @@ -279,8 +279,8 @@ observe the rocket's trajectory from various angles.

-
-

3. Stars

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+

3. Stars

The 3D Starfield Simulation is a QBasic program that creates a @@ -320,8 +320,8 @@ based on its distance, with closer stars appearing brighter.

-
-

4. Universe explorer

+
+

4. Universe explorer

This QBasic program that simulates a navigable 3D universe. Users can @@ -358,19 +358,19 @@ limiting the number of rendered objects based on distance. -

+

1.png

-
+

2.png

-
+

3.png

@@ -382,7 +382,7 @@ limiting the number of rendered objects based on distance.
-

Created: 2025-07-31 to 03:16

+

Created: 2025-07-31 to 15:59

Validate

diff --git a/Math/Plotting/index.html b/Math/Plotting/index.html index 68a413d..4d7e2f9 100644 --- a/Math/Plotting/index.html +++ b/Math/Plotting/index.html @@ -3,7 +3,7 @@ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> - + Plotting @@ -210,10 +210,10 @@

Table of Contents

@@ -234,8 +234,8 @@ } -
-

1. 2D graph

+
+

1. 2D graph

The 2D Graph Plotter is a simple yet effective program written in @@ -251,7 +251,7 @@ based on a user-defined mathematical function.

-
+

2D%20graph%20plot.png

@@ -262,8 +262,8 @@ based on a user-defined mathematical function.
-
-

2. 3D graph

+
+

2. 3D graph

The 3D Heightmap Explorer is a QBasic program designed to visualize @@ -299,7 +299,7 @@ grid.

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+

3D%20graph.png

@@ -310,8 +310,8 @@ grid.
-
-

3. Deriviative calculator

+
+

3. Deriviative calculator

This QBasic program is designed to compute and plot an arbitrary @@ -324,7 +324,7 @@ visualized.

-
+

Deriviative%20calculator.png

@@ -335,8 +335,8 @@ visualized.
-
-

4. Sine and cosine table

+
+

4. Sine and cosine table

The SIN & COS Table Generator is a QBasic program designed to visually @@ -346,7 +346,7 @@ visual representation of these fundamental trigonometric functions.

-
+

Sine%20and%20cosine%20table.png

@@ -358,7 +358,7 @@ visual representation of these fundamental trigonometric functions.
-

Created: 2025-07-31 to 03:16

+

Created: 2025-07-31 to 15:59

Validate

diff --git a/Math/Simulation/index.html b/Math/Simulation/index.html index 753b6c5..6e19da3 100644 --- a/Math/Simulation/index.html +++ b/Math/Simulation/index.html @@ -3,7 +3,7 @@ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> - + Simulation @@ -210,14 +210,14 @@

Table of Contents

@@ -238,8 +238,8 @@ } -
-

1. Explosion simulator

+
+

1. Explosion simulator

This QBasic program simulates the propagation of shock waves in a gas @@ -265,7 +265,7 @@ conditions by setting velocities to zero at wall boundaries.

-
+

Explosion%20simulator.png

@@ -276,8 +276,8 @@ conditions by setting velocities to zero at wall boundaries.
-
-

2. Gravity in 2D

+
+

2. Gravity in 2D

The Gravitation Simulation program is a simple yet insightful QBasic @@ -289,7 +289,7 @@ educational tool for understanding basic orbital mechanics.

-
+

Gravity%20in%202D.png

@@ -300,8 +300,8 @@ educational tool for understanding basic orbital mechanics.
-
-

3. Gravity in 3D

+
+

3. Gravity in 3D

This QBasic program simulates the gravitational interactions between @@ -335,8 +335,8 @@ will reach stable configuration.

-
-

4. Interference

+
+

4. Interference

This QBasic program simulates the interference pattern created by two @@ -364,8 +364,8 @@ displayed as a third waveform.

-
-

5. Interferogram

+
+

5. Interferogram

This QBasic program simulates the interference pattern created by @@ -375,7 +375,7 @@ used in physics and engineering to analyze wave interactions.

-
+

Interferogram.png

@@ -386,8 +386,8 @@ used in physics and engineering to analyze wave interactions.
-
-

6. Surface tension

+
+

6. Surface tension

This QBasic program simulates the behavior of water spills and the @@ -411,7 +411,7 @@ water cell if surrounded by a high density of water cells.

-
+

Surface%20tension.png

@@ -422,8 +422,8 @@ water cell if surrounded by a high density of water cells.
-
-

7. Wave 1

+
+

7. Wave 1

This QBasic program simulates the propagation of waves across a @@ -439,7 +439,7 @@ loss.

-
+

Wave%201.png

@@ -450,8 +450,8 @@ loss.
-
-

8. Wave 2

+
+

8. Wave 2

This QBasic program simulates and visualizes the behavior of water @@ -463,7 +463,7 @@ understanding wave mechanics.

-
+

Wave%202.png

@@ -475,7 +475,7 @@ understanding wave mechanics.
-

Created: 2025-07-31 to 03:16

+

Created: 2025-07-31 to 15:59

Validate

diff --git a/Math/Truth table/index.html b/Math/Truth table/index.html index 0dc8b26..f777e79 100644 --- a/Math/Truth table/index.html +++ b/Math/Truth table/index.html @@ -3,7 +3,7 @@ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> - + Truth table calculator @@ -1103,20 +1103,20 @@ hsAddReviewPanels();

Table of Contents

@@ -1133,12 +1133,12 @@ the input variables, with the corresponding output value. Truth tables are cruci designing and understanding digital circuits, Boolean algebra, and logical expressions.

-
-

1. Implemented logical operations

+
+

1. Implemented logical operations

-
-

1.1. Equivalent ( ⇔ , 1 )

+
+

1.1. Equivalent ( ⇔ , 1 )

The equivalent operation, also known as logical biconditional, is true if and only if @@ -1196,8 +1196,8 @@ Truth Table:

-
-

1.2. Implies ( ⇒ , 2 )

+
+

1.2. Implies ( ⇒ , 2 )

An implication asserts that if the first proposition is true, the @@ -1255,8 +1255,8 @@ Truth table:

-
-

1.3. OR ( ∨ , 3 )

+
+

1.3. OR ( ∨ , 3 )

The OR operation, also known as logical disjunction, is true if at @@ -1314,8 +1314,8 @@ Truth table:

-
-

1.4. AND ( ∧ , 4 )

+
+

1.4. AND ( ∧ , 4 )

The AND operation, also known as logical conjunction, is true if and @@ -1372,8 +1372,8 @@ Truth table:

-
-

1.5. NOT ( ¬ , 5 )

+
+

1.5. NOT ( ¬ , 5 )

The NOT operation, also known as logical negation, inverts the value @@ -1414,12 +1414,12 @@ Truth Table:

-
-

2. Examples

+
+

2. Examples

-
-

2.1. Example: (A ∧ B) ∨ ¬C

+
+

2.1. Example: (A ∧ B) ∨ ¬C

@@ -1502,8 +1502,8 @@ Truth Table: -
-

2.2. Example: A ⇒ (B ∨ ¬C)

+
+

2.2. Example: A ⇒ (B ∨ ¬C)

@@ -1586,8 +1586,8 @@ Truth Table: -
-

2.3. Example: (A ⇔ B) ∧ C

+
+

2.3. Example: (A ⇔ B) ∧ C

Truth Table: @@ -1676,7 +1676,7 @@ Truth Table:

-

Created: 2025-07-31 to 03:17

+

Created: 2025-07-31 to 16:00

Validate

diff --git a/Miscellaneous/Mouse driver/index.html b/Miscellaneous/Mouse driver/index.html index 93ef481..18088c9 100644 --- a/Miscellaneous/Mouse driver/index.html +++ b/Miscellaneous/Mouse driver/index.html @@ -3,7 +3,7 @@ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> - + Mouse driver for QBasic programs @@ -210,16 +210,16 @@

Table of Contents

-
-

1. Overview

+
+

1. Overview

QBasic, a popular programming language in the DOS era, lacks native @@ -230,8 +230,8 @@ workaround that allows QBasic to use mouse input.

-
-

2. High-level idea

+
+

2. High-level idea

Workaround to access mouse involves a Terminate and Stay Resident @@ -264,8 +264,8 @@ TSR keeps updating it with latest mouse state simultaneously.

-
-

3. Terminate and Stay Resident module

+
+

3. Terminate and Stay Resident module

A DOS TSR program that hooks into the system's interrupt mechanism to @@ -351,8 +351,8 @@ meanwhile.

-
-

4. QBasic demonstration program

+
+

4. QBasic demonstration program

A QBasic program that reads mouse data from the memory location @@ -362,7 +362,7 @@ clicks. -

diff --git a/Networking/Digital data over analog audio/index.html b/Networking/Digital data over analog audio/index.html index 8ba8eab..bc9598a 100644 --- a/Networking/Digital data over analog audio/index.html +++ b/Networking/Digital data over analog audio/index.html @@ -3,7 +3,7 @@ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> - + Data over analog audio @@ -210,15 +210,15 @@

Table of Contents

-
-

1. msg2xi: Text to Sound Encoder

+
+

1. msg2xi: Text to Sound Encoder

msg2xi is a utility designed to encode arbitrary text messages into an @@ -245,8 +245,8 @@ Download source code: Source code

-
-

2. xi2msg: Sound to Text Decoder

+
+

2. xi2msg: Sound to Text Decoder

The xi2msg utility is designed to decode digital information from an @@ -287,7 +287,7 @@ transmitted over telephone lines.

-
+

screenshot.png

@@ -299,8 +299,8 @@ Download source code: Source code
-
-

3. aver

+
+

3. aver

The aver.bas utility is designed to reduce noise in digitized audio @@ -343,7 +343,7 @@ Download source code: Source code

-

Created: 2025-07-31 to 03:18

+

Created: 2025-07-31 to 16:01

Validate

diff --git a/Networking/LPT communication driver/index.org b/Networking/LPT communication driver/index.org new file mode 100755 index 0000000..edb8565 --- /dev/null +++ b/Networking/LPT communication driver/index.org @@ -0,0 +1,61 @@ +#+TITLE: LPT Communication Driver +#+LANGUAGE: en +#+LATEX_HEADER: \usepackage[margin=1.0in]{geometry} +#+LATEX_HEADER: \usepackage{parskip} +#+LATEX_HEADER: \usepackage[none]{hyphenat} + +#+OPTIONS: H:20 num:20 +#+OPTIONS: author:nil + +* Overview + +This is weird networking solution. It allows to send data using +parallel LPT port serially(!) by bit-banging between two connected +computers :) + +Out of [[https://en.wikipedia.org/wiki/Parallel_port][25 physical wires in LPT port]], only 3 are used: + +- Pin 14 :: Carries a synchronization signal which uses a periodic + pattern (e.g., 010101...) to maintain timing alignment between the + communicating computers. + +- Pin 17 :: Functions as the bidirectional data line, responsible for + transmitting and receiving data between the connected computers. + +- Pin 18 :: Acts as the ground connection, providing a common + reference for electrical signals to ensure consistency in + communication. + + +By utilizing only three wires and software controlled bit-banging +algorithm, custom, comparatively simple, cheap and long cable can be +built to connect 2 computers in a DIY network setup. + +* LPT Communication Driver (LPTDRV) + +LPTDRV is a memory-resident driver designed to facilitate +communication between computers using parallel printer ports +(LPT). Developed in assembly language, this driver hooks into the +system's IRQ 0 to periodically monitor LPT port statuses, allowing for +data exchange without requiring constant polling by applications. + +Features and Capabilities: + +- Interrupt-Driven Communication :: By utilizing hardware interrupts, + LPTDRV efficiently handles data transmission and reception without + overwhelming system resources. + +- Buffer Management :: It features separate 5000-byte buffers for + incoming and outgoing data, providing smooth asynchronous + communication. + +- Protocol Handling :: Implements a simple protocol for data encoding + and decoding over parallel ports, demonstrating practical low-level + communication techniques. + +- Ease of Integration :: Applications can communicate with the driver + using INT 63h, making it straightforward to integrate into existing + software. + +- Speed :: During my testing, it achieved a maximum transfer speed of + approximately 12 Kb/s. diff --git a/Networking/LPT communication driver/lptdrv.txt b/Networking/LPT communication driver/lptdrv.txt deleted file mode 100644 index d276f46..0000000 --- a/Networking/LPT communication driver/lptdrv.txt +++ /dev/null @@ -1,23 +0,0 @@ -LPT communications driver -made by Svjatoslav Agejenko -in 2002.08 -H-Page: svjatoslav.eu -E-Mail: svjatoslav@svjatoslav.eu - -LPTDRV is a memory resident driver for LPT network. -It hooks IRQ 0 and checks ca. 18 times per second LPT status. -If any activity found it reads and decodes recieved data, -and stores it into its 5000 bytes input buffer. It has also -5000 bytes output buffer for sending data. -Applications can communicate with this driver by INT 63h. -see LPTDRV.ASM for more details. - - -Parallel printer port pins 14, 17, 18 -must be connected on both computers directly, eg. one to one. - -pin 14 carries syncronisation signal. 0 1 0 1 0 1 ... -pin 17 is used for data input/output. -pin 18 is ground. - -Maximum transfer speed on my computer was ~ 12 Kb/s. -- 2.20.1