Epson PX-8 Technical Manual page 60

REV.-A
2.3.1.3 Memory Space
There is a memory space on the MAPLE board which includes the following RAMs and ROMs:
Slave CPU 6303
4 kB mask ROM: FOOOH-FFFFH
Internal RAM: 80H-FFH
I/O register: 00H-28H
Option unit
ROM
LCD V-RAM (6 kB)
8000H
~
97FFH
Sub I/O control
GAH40S
Main CPU Z80
IPL ROM
OOOOH ~ 7FFFH
D-RAM
OOOOH
~
FFFFH
SIO 82C51
I/O OCH, ODH
Baud rate generator
GAH40M OOH
~
07H
SED 132D
I/O OEH, OFH
I
ROM capsule
(Max. 32 kB)
Fig. 2-32 Memory Space
2-36
4-bit CPU 7508
4 kB mask ROM
896-bit memory
ROM capsule
(Max. 32 kB)