MascOS 0.1.7

MascOS 0.1.7

The biggest update yet?

Major changes

• Added custom interrupts to the IVT, so external programs can access kernel functions with ease without including any file. Documentation is in this file.
• Wrote some code for the PIT driver.
• Added PC speaker setup file. Doesn't work.
• Added Serial.asm, which will be the serial ports driver. Hasn't been tested yet!.
• Added Parallel.asm, which will be the parallel ports driver. Hasn't been tested yet!.

Other changes

• Added a new function called VgaClearLine, that clears out a single line.

• Added another new function named VgaBackspace: deletes the previous character. Implemented it because Edit needed it.

• VgaSetCursor no longer uses the BIOS, but messes itself with I/O ports.

• Fixed VgaPaintLine compatibility with 286 and older.

• Now VESA can properly set a video mode.

• Removed Memory.asm from bootloader, since we get the amount of free ram with BDA.

• fetch command now displays the real amount of avaiable ram, not a dummy text anymore.

• Added sound command. Used for testing the pc speaker driver.

• Qemu now emulates the 486, since that is the oldest cpu option.

• Generally improved the code a bit.