User`s manual

PK2200D-88 s Interrupts and Adresses
EEPROM Addresses
These EEPROM constants apply to the standard PK2200.
Table D-3. Z180 I/O Device Register Addresses
Address Description
0x000 Startup Mode. If 1, enter program mode. If 8,
execute loaded program at startup.
0x001 Baud rate in units of 1200 baud.
0x100
Unit “serial number.” BCD time and date with the
following format: second, minutes, hours, day,
month, year.
0x108 Microprocessor clock speed in units of 1200 Hz (16-
bits). For 9.216 MHz clock speed, this value is
7680. For 18.432 MHz, this value is 15,360
.
0x16C Long coefficient relating speed of microprocessor
clock relative to speed of real-time clock. Nominal
value is 107,374,182 which is 1/40 of a second
microprocessor clock time on the scale where 2
32
is 1
second. This value requires 4 bytes of EEPROM,
stored least byte first
.