Tandy 1000 MS-DOS Reference Manual page 309

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Chapter 13 / The DEBUG Utility
• If you enter the U command with the range specified, DEBUG
disassembles all bytes in the range.
• In all cases, DEBUG may disassemble and display slightly
more bytes than the default amount or the number you
requested. This is because instructions are of varying lengths,
and the last instruction disassembled may include more bytes
than expected.
• When only an offset is used for the starting address, the seg-
ment indicated by register CS is used.
• If you have altered some locations using DEBUG, you can
enter the U command for the changed locations, view the new
instructions, and use the disassembled code to edit the source
file.
Example
U~4BA:1~~
L1
~
I
ENTER
I
causes DEBUG to disassemble 16 bytes beginning at address
04BA:0100 and displays information similar to the following:
~4BA:~10~ 2~6472
AND
[51
+
72] ,AH
~4BA: 69 DB 69
~4BA:~104
7665 JBE ~16B
~4BA:~1~6 2~737~
AND
[BP
+
D1
+
70] ,DH
~4BA:~1~9 65
DB 65
~4BA:~1~A 63 DB
63
~4BA:~1~B 69 DB 69
~4BA:~1~C 66
DB 66
~4BA:~10D
69 DB 69
~4BA:~10E 63 DB 63
~4BA:~1~F
61 DB
61
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