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英文描述: AMD Test Interface Port Board Schematics? 149KB (PDF)
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Test Interface Port Board User’s Manual
2-33
* Currently, the Version register is only accessible by the Am186 microcontrollers.
Table 2-14. I/O Map for 16-Bit Addressing
Address
Read/Write
Description
300h
R/W
Discrete LED Outputs register
302h
R
DIP Switch Inputs register
304h
R/W
Discete Outputs register
306h
R
Discrete Inputs register
308h
30Ah
30Ch
30Eh
W
ASCII display–write control instructions
ASCII display–busy flag / address read
ASCII display–write data to LCD
ASCII display–read data
310h
312h
314h
316h
W
Hex display–Byte 0: Hex digits 1 and 0
Hex display–Byte 1: Hex digits 3 and 2
Hex display–Byte 2: Hex digits 5 and 4
Hex display–Byte 3: Hex digits 7 and 6
320h–32Eh
R/W
Serial port 0
330h–33Eh
R/W
Serial port 1
340h
342h
344h
R/W
Parallel port
34Ah
W
Interrupt reset (write to this address to reset the
push button interrupt signal)
348h*
R
Version register
220h
R/W
Ethernet base address
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