Code Wrangling at its Best
In Chapter 6, the kernel heap still depended on low identity-mapped physical pages. That worked as a bootstrap step, but it tied the heap to the first 16 MiB of RAM. In Chapter 7, we added a real VMM and proved that the kernel can map and unmap pages anywhere the page tables allow. That
Continue Reading “Chapter 8 – Moving the Heap onto Virtual Memory”
In Chapter 2 we taught the CPU how to call our code when something goes wrong: Now we will teach the machine how to call our code when hardware wants attention: This is the first step toward a living kernel. A timer interrupt eventually gives us scheduling. Keyboard input eventually gives us a kernel monitor
Continue Reading “Chapter 3 — Hardware Interrupts: PIC, PIT Timer, and Keyboard Input”
In Chapter 1, we got control of the machine: Now we need something more important than printing text: we need the CPU to call our code when something goes wrong. Right now, if the kernel executes an invalid instruction, divides by zero, touches unmapped memory later, or faults during setup, the machine may reset, hang,
Continue Reading “Chapter 2 — GDT, IDT, and Surviving Your First Kernel Crash”
One of GAMBAS’s biggest advantages is its fully integrated development environment (IDE), which resembles VB6 and offers an easy-to-use graphical interface. This makes creating forms, handling events, and connecting to databases significantly faster than using more complex frameworks.
Continue Reading “Why GAMBAS BASIC Deserves a Place in Your Development Toolbox”
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