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[EEPROM]
The MB90706 has a 16K-bit serial transmission EEPROM (equivalent to the M24C16) that contains setup
information, mechanism information, and consumables information.
If the board is replaced, remove the EEPROM from the board to be replaced and mount it on the replacing board.
[ROM]
The MB90706 uses a “512K x 16 bits” flash ROM for programs.
It also permits another flash ROM to be mounted when needed to support various types of emulation.
A 2-megabyte memory space is defined for each ROM.
A 16-megabit mask ROM is used for the character generator.
Address Capacity
Explanation
000000 to 0000BF
192 bytes
CPU internal I/O area
0000C0 to 0000FF
64 bytes
External I/O area (for head and motor LSI)
000100 to 00037F
640 bytes
CPU internal RAM area
000380 to 5FFFFF
5.9M bytes
Reserved
600000 to 7FFFFF
2M bytes
Program ROM 1
800000 to 9FFFFF
2M bytes
Reserved
A00000 to BFFFFF
2M bytes Character
generator
ROM3
C00000 to DFFFFF
2M bytes
Reserved
E00000 to EFFFFF
1M byte
Reserved
F00000 to FFFFFF
512K byte
DRAM
Table 5.3.2 Memory map
Содержание Impact 3650
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