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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
2-32
I/O Maps
Table 2-13 lists the 8-bit I/O address locations for the respective peripherals, and
Table 2-14 lists the 16-bit I/O address locations.
Table 2-13. I/O Map for 8-Bit Addressing
Address
Read/Write
Description
302h
R/W
Discrete Outputs register
303h
R
Discrete Inputs register
304h
R
DIP Switch Inputs register
305h
R/W
Discrete LED Outputs register
306h
307h
308h
309h
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
30Ch
30Dh
30Eh
30Fh
W
ASCII display–write control instructions
ASCII display–busy flag / address read
ASCII display–write data to LCD
ASCII display–read data
310h–317h
R/W
Serial port 0
318h–31Fh
R/W
Serial port 1
320h
321h
322h
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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