Intel 8255x 10/100 Mbps Ethernet Controller Family Open Source Software Developer Manual 93
Host Software Interface
5 FEXT RCV_RD Current Address Register (high)
6 FEXT RCV_RD Base Address Register (low)
7 FEXT RCV_RD Base Address Register (high)
8 FEXT EXEC_WR Current Address Counter (low)
9 FEXT EXEC_WR Current Address Counter (high)
10 FEXT EXEC_WR Base Address Register (low)
11 FEXT EXEC_WR Base Address Register (high)
12 FEXT EXEC_RD Current Address Counter (low)
13 FEXT EXEC_RD Current Address Counter (high)
14 FEXT EXEC_RD Base Address Register (low)
15 FEXT EXEC_RD Base Address Register (high)
16 FEXT RCV_WR Byte Counter (low)
17 FEXT RCV_WR Byte Counter (high)
18 FEXT EXEC_WR Byte Counter (low)
19 FEXT EXEC_WR Byte Counter (high)
20 FEXT EXEC_WR Initial Threshold Register (low)
21 FEXT EXEC_WR Initial Threshold Register (high)
22 FEXT EXEC_WR Current Threshold Register (low)
23 FEXT EXEC_WR Current Threshold Register (high)
24 Configure Byte 8
25 Configure Byte 9
26 Configure Byte 10
27 Configure Byte 11
28 Configure Byte 12
29 Configure Byte 13
30 Configure Byte 14
31 Configure Byte 15
32 Configure Byte 16
33 Configure Byte 17
34 Configure Byte 18
35 Configure Byte 19
36 Configure Byte 20
37 Configure Byte 21
38 Reserved
39 Individual Address Register 1
40 Individual Address Register 2
41 Individual Address Register 3
42 Individual Address Register 4
Table 50. Dump Data Bytes (0-79)
Byte D7 D6 D5 D4 D3 D2 D1 D0