LSI Symbios SYM53C040, Technical Manual

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5-2 SFF-8067 Registers
The SFF-8067 Interface register set allows observation and control of the
two SFF-8067 interface ports which are designated as port 0 and port 1.
The registers associated with port 0 occupy addresses 0xFC20 through
0xFC27 and the registers associated with port 1 occupy addresses
0xFC28 through 0xFC2F. To conserve space, the register descriptions
only appear once in this chapter. The two applicable locations are
separated by a slash (/), with the port 0 address listed first.
Table 5.1 , the register map, summarizes the SFF-8067 registers in
graphical form.
Table 5.1 SFF-8067 Interface Registers
31 16 15 0 Port Address
Read Data (RDATA0) 0 0xFC20
Write Data (WDATA0) 0 0xFC21
Port Control/Status (PCST0) 0 0xFC22
Physical Address (PHAD0) 0 0xFC23
Live ESI (LESI0) 0 0xFC24
Manual Data Output (MDATA0) 0 0xFC25
Reserved – 0xFC26–0xFC27
Read Data (RDATA1) 1 0xFC28
Write Data (WDATA1) 1 0xFC29
Port Control/Status (PCST1) 1 0xFC2A
Physical Address (PHAD1) 1 0xFC2B
Live ESI (LESI1) 1 0xFC2C
Manual Data Output (MDATA1) 1 0xFC2D
Reserved – 0xFC2E–0xFC2F