Toshiba T2N - Manual (Page 118)

2.INTERNAL OPERATIONS
User’s manual 105
• Initial load
When RUN start up is taking place, with RUN position (the operation mode
switch) and the ROM/RAM switch (Dip SW.2) on the front of the CPU
module is OFF (ROM), the T2N will transfer the contents of the user
program and the first 2K words of the data register (D0000 to D2047) from
peripheral memory (EEPROM) to the main memory (RAM).
•
The initial load is not performed if the user program is written in the
EEPROM but the contents thereof are destroyed (BCC error detection).
The T2N goes to ERROR mode.
‚ User data initialization
User data initialization takes place after transfer from HALT mode to RUN
mode.
Refer to 2.2 System initialization for details of initialization.
ƒ I/O mounting check
The I/O module mounting is checked basing on the I/O allocation
information.
Refer to 5.RAS functions for details.
„ User program check
A BCC check is performed on the user program in the main memory
(RAM).
Refer to 5.RAS functions for details.
… Scan mode set up
Setting of the scan mode (floating scan or constant scan) is performed.
The scan mode is explained in 2.4.1.