Main Control Circuit - Oki S900 Service Manual

MAIN CONTROL CIRCUIT

4.2.2
MIPS CPU controls this S900. The CPU is configured with a 2.5MB external ROM, a 128MB
external RAM working area.
I/O Address Maps:
• ROM Area:
Flash Layout
0x1FC00000
Loader
0x1FC3FFFF
Scanner
0x1FC40000
Firmware
0x1FC7FFFF
•
External RAM Working Area:
0x00000000
0x07FFFFFF
0x1E000000
256KB
0x1E0FFFFF
256KB
0x1E100000
0x1E1FFFFF
128 MB
System
Firmware
Printer
Profile
4-3
S900