将PEP / 8程序集伪操作转换为十六进制机器语言

Question

I'm reading the textbook Computer Systems 4th Edition . The question below is in the context of the Pep/8 virtual computer. In the exercises I am given this question:

Convert the following assembly language pseudo-ops into hexadecimal machine language:

1. .ASCII "Bear\\x00"
2. .BYTE 0xF8
3. .WORD 790

I am trying to get these values converted to hex, but I cannot understand my textbook's explanation of the process, and I don't feel the book gives much of an explanation.

For the first answer I think it is a simple lookup in an ASCII conversion table:

42 65 61 72 00

The answers for this exercise are as follows:

1. 42 65 61 72 00
2. F8
3. 0316

Despite knowing these answers I have no idea how to get the answers for 2 and 3

Here is the download link for the Pep/8 assembler and simulator. Here is the source code for the assembler.

Answer 1

So number 2... Is in hexadecimal form.

you just need to change it to binary form with 8 bits

For example....

If you had 0xA7....

In base ten this is 167

The answer would be... In unsigned binary 10100111

This is how interpreted the question, is this what you meant? Do you have anymore information?