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Pisto

Introduction

Hi! My name is Pier-Luc. I have studied software and computer engineering. While I do not have a lot of skills in hardware development, my contributes are mainly to suggest some (future) standards that should be useful for software programming in ternary computers.

Yes, I know, we are still very far from what I propose in the following topics, but I do believe it is the best time to re-think everything about computer architectures before ternary computers become mainstream.

My Suggestions

Three Operands Instructions

Addition and Subtraction

As I said in page Data Types, we should be able to add and/or subtract three integers at the same time. This is possible since only one carry trit is needed. Here are the four different instructions:

 ADDADD register1, register2, register3    ; In C/C++: (var1 + var2 + var3);
 ADDSUB register1, register2, register3    ; In C/C++: (var1 + var2 - var3);
 SUBADD register1, register2, register3    ; In C/C++: (var1 - var2 + var3);
 SUBSUB register1, register2, register3    ; In C/C++: (var1 - var2 - var3);

In Range Operator

Sometimes, we want to know if a number is between two other numbers. It can be done with two comparisons (A < B and B < C) and the AND operator. Well, it could be interesting to execute this comparison in one step:

 INEE register1, register2, register3    ; Future C++: (var1 in ]var2, var3[);
 INEI register1, register2, register3    ; Future C++: (var1 in ]var2, var3]);
 INIE register1, register2, register3    ; Future C++: (var1 in [var2, var3[);
 INII register1, register2, register3    ; Future C++: (var1 in [var2, var3]);

The instruction is INxy, where x and y can be E for "excluding" and I for "including". The returned value is a tribool:

My Codes

Page last modified on November 14, 2009, at 10:21 AM

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