thejim wrote:
> Can someone tell me what is the difference between Instruction and
data
> memory
Some processors actually have physically separate hardware for program
and data memory. It's a way to double memory bandwidth: the next
instruction is fetched while the current instruction is executing. It
can also simplify CPU hardware; some early computers worked this way.
Some embedded microcontrollers have a small data RAM plus some k-bytes
of read-only EEPROM program memory, which is not data-addressable.
Re: [Lit.] Buffer overruns ... > floating point support or a memory expansion option.... had virtual memory support grafted on. ... > where the modified instruction was fetched from. ... vis-a-vis the official coporate strategic operating system TSS/360. ... (sci.crypt)
Re: [PATCH] Mantaining turnstile aligned to 128 bytes in i386 CPUs ... :This doesn't contradict your claim since main memory is not really involved. ... that gives the same not-very-real-world cache state for all iterations ... full, and the cpu stalls anyway. ...static instruction order makes it easiest for them, ... (freebsd-arch)
Re: [PATCH] Mantaining turnstile aligned to 128 bytes in i386 CPUs ... :This doesn't contradict your claim since main memory is not really involved. ... that gives the same not-very-real-world cache state for all iterations ... full, and the cpu stalls anyway. ...static instruction order makes it easiest for them, ... (freebsd-current)
Fourth edition of Computer Architecture: A Quantitative Approach ...Computer Architecture:... Increased coverage on achieving parallelism with multiprocessors.... Advanced Techniques for Instruction Delivery and Speculation ...Distributed Shared Memory and Directory-Based Coherence ... (comp.arch)
