Skip to main content
New
Stack Overflow Jobs powered by Indeed: A job site that puts thousands of tech jobs at your fingertips (U.S. only). Search jobs

New answers tagged

4 votes

How does the 8086 jump instruction work when the target address overflows?

I am absolutely not an expert on x86 bare-metal stuff (I play in the 8-bit era) but I've read enough over the years for this to set my A20 spidey-sense tingling. Is this the wrap-around behavior of ...
Eight-Bit Guru's user avatar
19 votes
Accepted

How does the 8086 jump instruction work when the target address overflows?

Most of the time on x86, you have to consider segments and offsets separately. Opcode 0xE9 is a near jump, it only touches IP. The addition wraps around, so the target is the relative offset (as a ...
Stephen Kitt's user avatar

Top 50 recent answers are included