SH ARC-66
Version 03.00
3.8 I/O Base Address
The I/O base address of the ARCNET controller is set by means of a
DIP switch (S2) on the card. Switch position “ON” represents a low level
and switch position “OFF” represents a high level on the signal line.
The I/O base address must be still unused in the system.
I/O Base Address
IOS0
IOS1
IOS2
0x260-0x26F
ON
ON
ON
0x290-0x29F
OFF
ON
ON
0x2E0-0x2EF
ON
OFF
ON
0x2F0-0x2FF
OFF
OFF
ON
0x300-0x30F
ON
ON
OFF
0x350-0x35F
OFF
ON
OFF
0x380-0x38F
ON
OFF
OFF
0x3E0-0x3EF
OFF
OFF
OFF
3.9 Memory Address
The Memory address of the ARCNET controller (Dual Ported RAM) is
set by means of a DIP switch (S2) on the card. Switch position ON
represents a low level and switch position OFF represents a high level
on the signal line.
The switch position also defines which memory area the boot ROM
superimposes..
The memory areas must be still unused in the system.
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