NEC PC-8201 - R K I L

Optional RAM #2 and RAM cassette 83 have write protect switches. and they can
select the address
(0 lo 7FFF or 8000 to FFFF) by software control.
-
Mernory is controlled at the following 110 port.
OUT A1 H
LADR 2
HADR
HADR 2
LADR 1
HADR
2121
HADR 1
SELECT ADDRESS (OH to 7FFFH)
LADR
BANK 90 (ROM #0)
BANK
#1 (ROM #I)
BANK $2 (RAM #2)
BANK $3 (RAM if3)
LADR
SELECT ADDRESS (8000H to FFFFH)
STANDARD ROM
NOT USED
BANK
#2 (RAM #2)
BANK
#3 (RAM $2)