Memory Map - Epson TM U200D - B/W Dot-matrix Printer Technical Manual

Memory Map

The following parts are mapped on the printer memory map:
CPU
EPROM (Program)
Rev. B
External program memory External data memory
0000H
0000H
(For multi-lingual)
Program,
character
generator area
generator area
FFFFH FFFFH
0000H
(For multi-lingual)
generator area
FFFFH
0000H
(For multi-lingual)
generator area
FFFFH
0000H
(For multi-lingual)
generator area
FFFFH
CPU (Internal memory)
EA
RD
A8 |A15
D0 |D7
373
D0 |D7
G OC
ALE
C0 |O7
A0A7
(CE)P71
(A16)P75
(A17)P76
(A18)P77
WR
Figure 2-17 Memory map
TM-U200D/U200PD Technical Manual
Intemal memory
0000H
Can not to be used.
Character (Interral ROM
program area)
F000H
(1)
Can not to be used.
64KB
F7A0H
Internal RAM (2KB)
FFA0H
Character
Internal I/O (96bytes)
(2)
FFFFH
64KB
Character
(3)
64KB
Character
(4)
64KB
ROM (External program memory)
(512K)
OE
A8 |A15
D0 |D7
A0 |A7
CE
(External data memory) (4M)
A8 |A15
D0 |D7
OE
A0 |A7
CE
A16 |A18
WE
Mechanism Configuration and Operating Principles