Address
|
Bits
|
Access
|
Description
|
0x0
|
15-0
|
Read Only
|
Board ID (0x8900)
|
0x02
|
15-8
|
Read Only
|
8 digital inputs
|
7-4
|
Read Only
|
Custom load ID (0 is standard 8900)
|
3-0
|
Read Only
|
FPGA Revision
|
0x04
|
15-8
|
Read/Write
|
8 digital outputs
|
7-4
|
Read Only
|
Reserved
|
3
|
Read/Write
|
Tagmem CLK
|
2
|
Read/Write
|
Tagmem SI
|
1
|
Read/Write
|
Tagmem CNS
|
0
|
Read/Write
|
Tagmem SO
|
0x6
|
15-0
|
Read/Write
|
SRAM page register
|
0x8
|
15-0
|
Read/Write
|
PC104 bits 15-0 GPIO override
|
0xa
|
15-9
|
Read Only
|
Reserved
|
8
|
Read Only
|
PC104 bit 16 override
|
7-0
|
Read Only
|
ISA data lines 15-8 override
|
0xc
|
15-0
|
Read/Write
|
GPIO Output values
|
0xe
|
15-9
|
Read Only
|
Reserved
|
8
|
Read/Write
|
PC104 bit 16 output values
|
7-0
|
Read/Write
|
ISA data lines 15-8 output values
|
0x10
|
15-0
|
Read/Write
|
PC104 bits 15-0 data direction
|
0x12
|
15-9
|
Read Only
|
Reserved
|
8
|
Read/Write
|
PC104 bit 16 data direction
|
7-0
|
Read/Write
|
ISA Data lines 15-8 data direction
|
0x14
|
15-0
|
Read/Write
|
PC104 bits 15-0 GPIO input values
|
0x16
|
15-9
|
Read Only
|
Reserved
|
8
|
Read Only
|
PC104 bit 16 input values
|
7-0
|
Read Only
|
ISA data lines 15-8 input values
|