Quatech MPA-100, Руководство пользователя

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The first four bytes, Base+0 through Base+3, of address space on the MPA-100 contain
the internal registers of the SCC. The next two locations Base+4 and Base+5 contain the
Communications Register and the Configuration Register. The last two address port locations
are reserved for future use. The entire address range of the MPA-100 is shown in Table 2.
Table 2 MPA-100 Address Assignments
Reserved Base + 7
Reserved Base + 6
Configuration Register Base + 5
Communications Register Base + 4
SCC Control Port, Channel B Base + 3
SCC Data Port, Channel B Base + 2
SCC Control Port, Channel A Base + 1
SCC Data Port, Channel A Base + 0
Register Description Address
Information on the internal registers of the SCC can be found in Section 6. The two
onboard registers give the user additional options pertaining to DMA, interrupts and the
RS-232-D standard for communication. Information on the Configuration Register and the
Communications Register can be found in Section 8, and Section 9.
MPA-100 User's Manual 3-2