HAL Hardware Abstraction Layer. Used by WindowsNT and some other operating systems. HDC Hard Disk Controller IDE Intelligent Drive Electronics. A standard for connecting hard disks, floppies, etc. to the AT bus. IDT Interrupt Descriptor Table.
Interrupt Interrupts can be software or hardware generated.
When an interrupt occurs, the CPU jumps to code assigned to be ran whenever that interrupt is triggered. Interrupt Gate A descriptor for calling an interrupt. IRQ Interrupt Request. Hardware signal to the CPU from an external peripheral. ISA Industry Standard Architecture.