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CHAPTER 8: DEBUGGER
168 EPSON S5U1C63000A MANUAL
(S1C63 FAMILY ASSEMBLER PACKAGE)
df (data memory fill)
Function
This command rewrites the contents of the specified data memory area with the specified data.
Format
(1) >df <address1> <address2> <data> ↵ (direct input mode)
(2) >df↵ (guidance mode)
Start address ? <address1>↵
End address ? <address2>↵
Data pattern ? <data>↵
>
<address1>: Start address of specified range; hexadecimal or symbol (IEEE-695 format only)
<address2>: End address of specified range; hexadecimal or symbol (IEEE-695 format only)
<data>: Write data; hexadecimal
Condition: 0 ≤ address1 ≤ address2 ≤ 0xffff, 0 ≤ data ≤ 0xf
Examples
Format (1)
>df 200 2ff 0↵ ... Fills the data memory area from address 0x200 to address 0x2ff with 0x0.
Format (2)
>df↵
Start address ? 200↵ ... Start address is input.
End address ? 2ff↵ ... End address is input.
Data pattern ? 0↵ ... Data is input.
>
∗ Command execution can be canceled by entering only the [Enter] key and nothing else.
Notes
• Both the start and end addresses specified here must be within the range of the data memory area
available with each microcomputer model.
An error results if the input one is not a hexadecimal number or a valid symbol.
Error : invalid value (no such symbol / symbol type error)
An error results if the limit is exceeded.
Error : Address out of range, use 0-0xFFFF
• An error results if the start address is larger than the end address.
Error : end address < start address
• Data must be input using a hexadecimal number in the range of 4 bits (0 to 0xf). An error results if the
limit is exceeded.
Error : Data out of range, use 0-0xF
•Write operation is not performed to the read only address of the I/O area.
• When there is an unused area in the specified address range, no error occurs. The area other than the
unused area will be filled with the specified data.
•When the contents of the data memory is modified using the df command, the displayed contents of
the [Data] window are updated automatically.
GUI utility
None