He opened the keyboard. He didn't rewrite the whole OS; there wasn't time. He wrote a patch. He inserted a "padding" instruction—a dummy push—inside the interrupt entry logic to force the alignment back to where it belonged.
The system supported Nested Interrupts. This meant that if a high-priority interrupt occurred while a low-priority one was being handled, the CPU would pause the first handler to answer the second. ivthandleinterrupt
. Its primary role is to respond to hardware signals indicating that a device has attempted an illegal or unauthorized memory access. OSR Developer Community Technical Context & Blue Screens (BSOD) He opened the keyboard
Incompatible drivers, specifically in chipset, network, or graphics components. Kernel DMA Protection: looking at the disassembly
To the outside observer, it looked like a mechanical failure. To Elias, looking at the disassembly, it looked like chaos.