Ken Shirriff's blog

Computer history, restoring vintage computers, IC reverse engineering, and whatever

Understanding the x86's Decimal Adjust after Addition (DAA) instruction

›
I've been looking at the DAA machine instruction on x86 processors, a special instruction for binary-coded decimal arithmetic. Intel...
13 comments:

Reverse-engineering the Intel 8086 processor's HALT circuits

›
The 8086 processor was introduced in 1978 and has greatly influenced modern computing through the x86 architecture. One unusual instructio...
4 comments:

Reverse-engineering the conditional jump circuitry in the 8086 processor

›
Intel introduced the 8086 microprocessor in 1978 and it had a huge influence on computing. I'm reverse-engineering the 8086 by examini...
11 comments:

Inside the Globus INK: a mechanical navigation computer for Soviet spaceflight

›
The Soviet space program used completely different controls and instruments from American spacecraft. One of the most interesting navigati...
13 comments:

Counting the transistors in the 8086 processor: it's harder than you might think

›
How many transistors are in Intel's 8086 processor? This seems like a straightforward question, but it doesn't have a straightforw...
11 comments:
‹
›
Home
View web version
Powered by Blogger.