Commodore 128 System Manual page 409

D
COMMAND:
PURPOSE: Disassemble machine code into assembly
language
mnemonics and operands.
D [<address1> ][< address 2 > ]
SYNTAX:
The format of the disassembly differs slightly from the input
format of an assembly. The difference is that the first character of
a disassembly is a period rather than an A (for readability), and
the hexidecimal of the code is listed as well.
A disassembly listing can be modified using the screen editor.
Make any changes to the mnemonic or operand on the screen,
then hit the carriage return. This enters the line and calls the
assembler for further modifications.
A disassembly can be paged. Typing a D <RETURN> causes
the next page of disassembly to be displayed.
EXAMPLE:
D 3000 3003
.03000 A900
.03002 FF
.03003 DO 2B
F
COMMAND:
PURPOSE: Fill a range of locations with a specified byte.
F <address 1> <address 2 > < b y te >
SYNTAX:
This command is useful for initializing data structures or any
other RAM area.
<address1>
<address 2 > An optional ending address of
LDA #$00
???
BNE $3030
<address 1> The first location to fill with the
<address 2 > The last location to fill with the
<byte value> Number to be written.
A number setting the address to
start the disassembly.
code to be disassembled.
< b yte > .
< b yte > .
J-5