19
Transfer
The ASCII Unit’s BASIC or assembly language program must be written on a
personal computer which is connected to port 1 of the ASCII Unit through an
RS-232C interface. A program can be transferred to the ASCII Unit from the per-
sonal computer or any other storage device connected to one of the communi-
cation ports with the BASIC LOAD command or the S and L commands. Pro-
grams can also be transferred from the ASCII Unit’s EEPROM to the ASCII
Unit’s RAM using the LOAD command.
Programs can be transferred from the ASCII Unit’s RAM to the EEPROM or to a
personal computer or other storage device connected to one of the communica-
tion ports using the BASIC SAVE command.
The ASCII Unit can be booted on power up by a program stored in the EEPROM.
To do this set pin 2 of the front panel DIP switch on the ASCII Unit to ON.
Note
1. During data transfer, an overflow may occur if the buffering capacity of the
baud rate settings of the computer and the ASCII Unit are not matched. If an
overflow error does occur, set either a slower baud rate or specify XON with
the OPEN command.
2. Programs named with PNAME cannot be transferred. Delete the name by
executing PNAME “ ” if necessary before attempting to transfer a program.
The FIT or LSS can be used to back up BASIC programs onto floppy disks, con-
sult the FIT or LSS Operation Manual.
The following figure illustrates the direction of data transfer when using the
SAVE and LOAD commands.
Computer or
other periph-
eral device
Computer or
other periph-
eral device
SAVE #1, “COMU:”
LOAD #1, “COMU:”
SAVE #2, “COMU:”
LOAD #2, “COMU:”
(1)
(2)
Note
1. The EEPROM’sn lifetime is limited to 5,000 write operations.
2.
Refer to the explanation of the OPEN statement for details on
COMU.
Program Transfer
Summary of Contents for C500-ASC04
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