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Dynacube Operating Systems

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Presentation on theme: "Dynacube Operating Systems"— Presentation transcript:

1 Dynacube Operating Systems
Dynacube for Today and Tomorrow Guided by Mrs. G. Andal Jayalakshmi, B.E, M.S Mohammed Hassan Shah J. Meenakshi K.R.

2 Thiagarajar College of Engineering, INDIA
Problem Description The project aims to implement an operating system with the following features Intel x86 based 32 bit Protected mode Multitasking Modular Design Approach Graphical User Interface (GUI) POSIX standard compliancy Thiagarajar College of Engineering, INDIA

3 Implementation Details
Languages Used: Intel Assembly C – without using Standard libraries C++ - for GUI components Platform Used: GNU/Linux Tools Used: GCC, G++ Compiler NASM Assembler VMware, Bochs Emulator Kdevelop IDE Thiagarajar College of Engineering, INDIA

4 Description of Modules
Thiagarajar College of Engineering, INDIA

5 Thiagarajar College of Engineering, INDIA
Kernel Module 100% Completed Kernel Initialization Process Manager Memory Manager Thiagarajar College of Engineering, INDIA

6 Kernel Initialization
100% Completed Enabling A20 line Loading Global Descriptor Table Loading Interrupt Descriptor Table Remapping the Programmable Interrupt Controller Initializing the PCB, PGDE, PGTE and Virtual8086 Monitor Initializing the Timer, keyboard, mouse and floppy drivers Initializing the SVGA mode 114 (resolution 800 x 600 colors 64000) Enabling the Timer, Keyboard, Mouse and Floppy IRQ Enabling Interrupts Thiagarajar College of Engineering, INDIA

7 Thiagarajar College of Engineering, INDIA
Process Manager 100% Completed Task State Segment based Multitasking Queues used: Ready, message, device, gui_server. Asynchronous Message Passing Interface Scheduling policy – Priority based Round Robin Dynamic process creation – loading binary image, LDT and page table initialization Thiagarajar College of Engineering, INDIA

8 Thiagarajar College of Engineering, INDIA
Memory Manager 100% Completed Segmented paged memory model Dynamic memory allocation and de-allocation Page level – first- fit algorithm Variable chunk level Logical to linear and linear to physical mapping Physical memory copying Memory->var chunk Allocation algorithm ? Thiagarajar College of Engineering, INDIA

9 Thiagarajar College of Engineering, INDIA
Device Manager Module 100% Completed Keyboard and SVGA Video Driver Mode Info Retrieval and Setting (114) Linear Frame Buffer and Double Buffering Font Map and Cursor Creation Primitive Graphical Library Functions Mouse Driver Initializing, Calibration, Reset handling Interrupt Handling Cursor Tracking Event Detection Thiagarajar College of Engineering, INDIA

10 Thiagarajar College of Engineering, INDIA
Device Manager Module 100% Completed Floppy Device Driver Floppy process creation and Request Handling Floppy IRQ Handling DMA Initialization and Transfer Motor Handling Seeking and Recalibration Read And Write Sector Thiagarajar College of Engineering, INDIA

11 Thiagarajar College of Engineering, INDIA
File System Module 100% Completed FAT12 with Long Name Standard File and Directory Management – creation, removal, retrieval Descriptor Handling File Buffering Thiagarajar College of Engineering, INDIA

12 Thiagarajar College of Engineering, INDIA
DServer (GUI) Module 100% Completed GUI process and Message Handling Window Management Alias Id Mapping Z-order Processing Menu Handling Component Management Thiagarajar College of Engineering, INDIA

13 System Calls Implemented
Process Manager Floppy Driver fork exit send receive read_sector write_sector File System open read write create remove rename Thiagarajar College of Engineering, INDIA

14 System Calls Continued
Graphics Library GUI setPixel getPixel getImage putImage drawLine drawRect drawCircle create show hide destroy resize enable disable Thiagarajar College of Engineering, INDIA

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Test Applications Dynaplorer (Explorer) Dynapad (Text Editor) Dynacalc (Calculator) Thiagarajar College of Engineering, INDIA

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Screen Shots Thiagarajar College of Engineering, INDIA

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Dynaplorer Thiagarajar College of Engineering, INDIA

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Dynapad Thiagarajar College of Engineering, INDIA

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Dynacalc Thiagarajar College of Engineering, INDIA

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Bibliography Design Literature Andrew S. Tanenbaum and Albert S. Woodhull, Operating Systems: Design and Implementation Microsoft’s official FAT12 documentation Hardware Literature IA-32 Intel Architecture Software Developer’s Manual Volume 1: Basic Architecture Volume 2: Instruction Set Reference Volume 3: System Programming guide VESA BIOS EXTENSION (VBE) Core Functions Standard Version: 3.0 NEC µPD765 and Intel Floppy Disk Controller specification Adam Chapweske, PS/2 Keyboard and Mouse Interface Thiagarajar College of Engineering, INDIA

21 Thiagarajar College of Engineering, INDIA
Conclusion The project has successfully achieved its stated goals. We are looking forward to make the following enhancements to our project in near future: Extend Dynacube to 64bit architectures. To provide SMP support. To port GCC and G++ to our Dynacube operating system. To include File System support for EXT2, EXT3 and NTFS formats. To provide Unicode support. To provide more sophisticated user interfaces. To design a configurable Window manager. Thiagarajar College of Engineering, INDIA

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Queries Queries ??? ? Thiagarajar College of Engineering, INDIA

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Thank you Thiagarajar College of Engineering, INDIA


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