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Definitions (Arbitration, DMA...)
Micro Channel Architecture (MCA slots, pinouts, features, transfer modes, SCB etc.)
Watchdog Timer
BIOS & Related Topics
Exploring The ROM BIOS (PC Magazine article)
ABIOS (Byte article)
Loadable ABIOS (selected late PS/2s)
Why Int 4Bh?
Int 15h Index (from David Beem)
CMOS Data Area (accessed via I/O addr 70h and 71h)
Memory Technology Explained (DRAM, SRAM, VRAM, read/write cycles etc.)
Serial Diagnostic Link (Type 4 complex)
ISA Interrupt Sharing (PS/2 Model 25 & 30)
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