Hi, I'm Thomas, chief developer of the SBTCVM project, and all around artist and programmer. I do have more of an understanding of balanced ternary than most i would say.
The VM of SBTCVM uses instruction level simulation to simulate a type of digital computer originally developed in Russia. It uses a 'balanced' base number. A balanced base number has an equal number of positive and negative digits. for example:
Here's a 2 trit(similar to a bit) number table as an example.
-- -4
-0 -3
-+ -2
0- -1
00 0
0+ 1
+- 2
+0 3
++ 4
not only does it have 9 states, 4 of them are negative. This inherit signing causes balanced ternary computing to be quite different from binary in places.
The (latest version's) CPU itself uses 18-trit words divided into a 9-trit instruction word, and a 9-trit data word, along with a 9-trit memory bus. This means it has 19,683 words of memory. It uses an additional 9-trit IO bus, providing 19,683 IO addresses.
The second part of SBTCVM is the programming tools. Currently SBTCVM has a fairly advanced low-level assembler, and a currently numeric, higher level language that provides a basic integer object abstraction system, along with the ability to use some assembly in-line if your feeling brave :)
A trom (memory image) dump utility is also provided, as a standard hex viewer obviously isn't going to help much. :)
The third part is software that runs in the VM. Now, the latest codebase isn't ready for huge interactive programs yet, but we do have some exciting plans... :)
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I suppose i could try. :)
SBTCVM has several major parts:
The VM of SBTCVM uses instruction level simulation to simulate a type of digital computer originally developed in Russia. It uses a 'balanced' base number. A balanced base number has an equal number of positive and negative digits. for example:
Here's a 2 trit(similar to a bit) number table as an example.
-- -4
-0 -3
-+ -2
0- -1
00 0
0+ 1
+- 2
+0 3
++ 4
not only does it have 9 states, 4 of them are negative. This inherit signing causes balanced ternary computing to be quite different from binary in places.
The (latest version's) CPU itself uses 18-trit words divided into a 9-trit instruction word, and a 9-trit data word, along with a 9-trit memory bus. This means it has 19,683 words of memory. It uses an additional 9-trit IO bus, providing 19,683 IO addresses.
The second part of SBTCVM is the programming tools. Currently SBTCVM has a fairly advanced low-level assembler, and a currently numeric, higher level language that provides a basic integer object abstraction system, along with the ability to use some assembly in-line if your feeling brave :)
A trom (memory image) dump utility is also provided, as a standard hex viewer obviously isn't going to help much. :)
The third part is software that runs in the VM. Now, the latest codebase isn't ready for huge interactive programs yet, but we do have some exciting plans... :)