1. The article was first posted on Aug. 6, 2021
2. Revised on Aug. 10, 2021
Corrected mistake in Fig. 3.
3. Revised on Sep. 4, 2021
Updated the assembly code to Ver. 1.1.0. The exponent part is always set to zero when the result of an operation is zero.
As an application example, Fast Fourier Transform program and execution example were added to the attachment.
Added single lowercase letters to variable names.
4. Revised on Nov. 4, 2021
Added Chapter 11, "Making ROMs of the interpreter" to the Details.