456External Controllers
© Tibbo Technology Inc.
Mapping Options for the RS422 Mode
There are even fewer options in the RS422 mode:
Pin pairs on the DB9M
connector
RX/TX/DSR/DTR + RX/TX
+ RX/tx
RX/TX/DSR/DTR +
RX/tx/DSR/DTR
Mapping Options for the RS485 Mode
There are no mapping options in the RS485 mode. You have one TX line pair, and
one RX line pair. That's all.
8.1.1.4
Flash and EEPROM Memory
DS1100
The DS1100 has 512KBytes of internal flash memory and 208 bytes of EEPROM
memory.
A portion of the internal flash memory is used to store the TiOS firmware. When you
are performing a firmware upgrade it is this memory you are saving the firmware
binary into.
The rest of this flash memory is available to your Tibbo BASIC/C application. The
internal flash memory cannot be used as a flash disk.
The EEPROM is almost fully available to your application, save for a small 28-byte
area called "special configuration area". The EEPROM is accessed through the stor.
object (see TIDE, TiOS, Tibbo BASIC, and Tibbo C Manual).
DS1101 and DS1102
The DS1101 and DS1102 devices have 1024KBytes of flash memory and 2KBytes of
EEPROM memory.
The first 64KBytes of flash memory are used to store the TiOS firmware. When you
are performing a firmware upgrade it is this memory you are saving the firmware
binary into.
The rest of this flash memory is available to your Tibbo BASIC/C application and its
data. Whatever memory space is left after the compiled application is loaded can be