Panasonic FP-M Hardware Manual page 205

Address Name of system register
418 Buffer capacity setting
for data received
from RS232C serial port
Default
value
K1660 This register specifies the number of words to be used as
a buffer. (Refer to system register 417 for details about the
starting address settings.)
• Setting range
FP-M 2.7 k type: K0 to K1660
FP-M 5 k type: K0 to K6144
EXAMPLE:
If K0 is input to system register 417 and K100 to system
register 418, the number of data received is stored to DT0
and the data received are stored starting from DT1 to DT99.
8-5. System Registers
Description
197