Справочник Пользователя для IBM DS-2000

                      

Figure  1.   DS-2000 board layout . . . . . . . . .  2
Figure  2.   16550 internal registers . . . . . . .  3
Figure  3.   Interrupt enable register  . . . . . .  4
Figure  4.   Interrupt identification register  . .  5
Figure  5.   Interrupt source identification  . . .  6
Figure  6.   FIFO control register  . . . . . . . .  7
Figure  7.   FIFO receiver trigger levels . . . . .  7
Figure  8.   Line control register  . . . . . . . .  8
Figure  9.   Parity options . . . . . . . . . . . .  9
Figure 10.   Word length and stop bit options . . .  9
Figure 11.   MODEM control register . . . . . . . . 10
Figure 12.   Line status register . . . . . . . . . 11
Figure 13.   MODEM status register  . . . . . . . . 13
Figure 14.   Input clock frequency options  . . . . 15
Figure 15.   Divisor latch options  . . . . . . . . 15
Figure 16.   POS implementation . . . . . . . . . . 17
Figure 17.   Base address locations . . . . . . . . 18
Figure 18.   Interrupt request levels . . . . . . . 18
Figure 19.   Output control block diagram . . . . . 21
Figure 20.   J2/J3 layout and settings  . . . . . . 21
Figure 21.   Auxiliary channel configuration
                (handshake mode)  . . . . . . . . . 22
Figure 22.   Auxiliary channel configuration
                (external clock mode) . . . . . . . 22
Figure 23.   Auxiliary channel configuration
                (loopback mode) . . . . . . . . . . 22
Figure 24.   Output connections . . . . . . . . . . 23
Figure 25.   Output signal definitions  . . . . . . 23

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