Special Function Registers - Arcom PCIB40 Technical Manual

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Special Function Registers

The green User LED is controlled by bit 0 when the pointer register is loaded with 80h.The board
identification register can be used to confirm that the board is present in the system and is the
correct board type. Other PCbus I/O boards in Arcom's range will return a different value.
Pointer Value Read/Write
(hex)
80 Write
81 Read
90 Write
6
Pointer Name
User LED Control
Board Identification
Output Enable Control
J206 PCIB40 Technical Manual
Functions
Pointer Bit
Bit 0 1=LED ON
Only 0=LED OFF
Always 00
Bit 0-7
for the PCIB40
Bit 0 0=Disabled
Only 1=Enabled