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SW4-1, SW4-2, SW4-3, SW4-4 must be set to match the CPU type.
The chart below shows the proper jumper settings for their respective
V
.
cc
CPU voltage setting (SW4-1, SW4-2, SW4-3, SW4-4)
CPUVcc
2.2V
2.5V
2.7V
2.8V*
2.9V
3.1V
3.2V
3.4V(STD/VER)
3.5V
* Default
The DiskOnChip 2000 occupies an 8 Kbyte window in the upper
memory address range of CC00 to DC00. You should ensure this does
not conflict with any other device's memory address.
DiskOnChip 2000 memory address (S1-1, S1-2, S1-3)
Memory address (HEX)
CC00
D000*
D400
D800
DC00
* Default
These addresses might conflict with the ROM BIOS on some of the
other peripheral boards. Please select appropriate memory address to
avoid memory conflict.
SW4-1 SW4-2 SW4-3 SW4-4
OFF
OFF
OFF
ON
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
ON
ON
ON
ON
ON
S1-1
OFF
OFF
OFF
OFF
ON
ON
OFF
OFF
ON
ON
ON
OFF
OFF
OFF
ON
ON
ON
OFF
OFF
ON
OFF
ON
ON
S1-2
S1-3
OFF
OFF
OFF
ON
ON
OFF
ON
ON
OFF
OFF
Chapter 2 Installation 17
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