Happy Birthday VAX 11/780 (influence of)
cclist at sydex.com
Thu Oct 28 16:03:24 CDT 2010
On 28 Oct 2010 at 14:36, Richard wrote:
> You asked if it was used on modern PCs. The answer is yes. Every PC
> these days supports standard VGA/monochrome display adapter
> functionality which uses a memory-mapped framebuffer. Even the
> high-end 3D cards support this functionality, albeit as a legacy from
> past architectures.
I probably should have said "modern PCs exclusively use memory-mapped
I/O" a la PDP-11 or CP-1600 or MC6800...
Clearly there, the answer is "no". They have I/O address space and
Not that I think that memory-mapped I/O is a bad idea. Most
microcontrollers are witness to that.
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