Commodore 128 Programmer's Reference Manual page 202

192 COMMODORE 128
U
Memory contents may be edited using the screen editor. Move the cursor to the data to be
modified, type the desired correction and hit RETURN . If a syntax error
or an attempt to modify ROM has occurred, an error flag (?) is displayed. An
ASCII dump of the data is displayed in reverse (to contrast with other data displayed on
the screen) to the right of the hex data. When a character is not printable, it is displayed
as a reverse period. As with the disassembly command, paging down is accom
plished by typing M and RETURN
EXAMPLE:
M 21C00
>21C00 41 4A 4B 4C 4D 4E 4F 50 :AJKLMNOP
NOTE: The above display is produced by the 40-column editor.
U
u
I \
\ \
u
COMMAND: R
PURPOSE:
SYNTAX:
EXAMPLE:
Show important 8502 registers. The status register, the program counter,
the accumulator, the X and Y index registers and the stack pointer are
displayed. The data in these registers is copied into the microprocessor
registers when a "G" or "J" command is issued.
R
R
PC SR AC XR YR SP
; 01002 01 02 03 04 F6
U
u
NOTE: ; (semicolon) can be used to modify register displays in the same
fashion as > can be used to modify memory registers.
COMMAND:
PURPOSE:
SYNTAX:
Save the contents of memory onto tape or disk.
S <<<filename">,<device>,<address 1>, <address 2>
<"filename"> Any legal Commodore 128 filename. To save
the data, the file name must be enclosed in dou
ble quotes. Single quotes cannot be used.
<device> A number indicating on which device the file is
to be placed. Cassette is 01; disk is 08, 09, etc.
<address 1> Starting address of memory to be saved.
<address 2> Ending address of memory to be saved + 1. All
data up to, but not including, the byte of data at
this address is saved.