3980xpi Users Manual - Data I/O Corporation

Edit Memory Menu
Commands
The Edit Memory menu appears if you have selected a memory device. This
menu contains the Edit Memory, Complement, Data Copy, Fill Memory, and
Swap Memory commands.
Edit Memory
More Commands/Edit Data/Edit Memory/Edit Memory Data
Use the Edit Memory command to edit the data for a memory device. To edit
data stored in memory, follow these steps:
1. Specify the memory editing parameters.
2. Press ENTER to enter the editor. Depending on the selected word width, the
4-, 8-, or 16-bit word width memory editor screen appears.
3. To change data, move the cursor to the memory location to be changed
and type the new characters over the old ones. Enter the data either in hex
or ASCII mode (select the mode using TAB as described below). The
cursor’s location is shown as a hex address at the top of the screen.
The parameters and editor commands are described below.
� Source (R,D)
Specifies the source of the data to be edited. Press SPACE to toggle
between R (RAM) and D (Disk).
� Filename
Specifies the name of the disk file containing the data to edit. This option
appears only if you select disk as the Source. The filename must follow
standard DOS conventions. An example of a valid filename is 27c256.dat.
The file must be an absolute binary file.
� Edit Data Word Width (4,8,16,32)
Selects a 4-, 8-, 16-, or 32-bit Data Word Width. Press SPACE to toggle
between the 4-, 8-, and 16-bit options. If you select 8, the editor treats all
addresses as byte addresses. If you select 16 or 32, the editor treats all
addresses as 16- or 32-bit word addresses and the Edit Odd/Even Byte
Swap feature is enabled.
� Edit Address Offset
Specifies the address you want assigned to the first byte of data in user
memory. Using the address offset can save much calculation time on files
written on a host system and then downloaded to the programmer. For
example, if your host system data file was written using a begin address of
1000H, you could specify an offset of 1000H. Edit data would then be
displayed on the programmer's screen beginning with address 1000H.
� Edit Begin Address
Specifies the first address you wish to edit. Enter the 1- to 6-digit hex
address. This address must be equal to or greater than the edit address
offset. The edit address offset value subtracted from the edit begin address
value cannot be greater than the user RAM size.
3980xpi/3980/3900/2900 User Manual 4-49