On Wed, Jan 23, 2008 at 12:09:59AM -0800, Bob La Quey wrote:
Once you get used to stack based computing then it is the case that one looks at a register based instruction set and says, "An interesting exercise is to look at the instruction set encoding and see if you can figure out how to represent even a single useful instruction."
Actually, my comment was more on what is missing on the webpage I gave. It just gives the encoding of the instructions, and omits the part of the documentation that describes the actual instructions. Most of the instructions map from 1-2 forth words, the DONE that ';' compile almost always being folded into an instruction. Lots of common sequences that involve a stack operation followed by an arithmetic operation are folded together. It really is a strange CPU. Dave -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-lpsg
