Diamond Systems Pyxis-MM Kullanıcı Kılavuzu - Sayfa 11

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7. REGISTER MAP

Note: These registers can only be accessed if the Pyxis-MM is on the PC-104 bus.
Base + 0
Read
Bit No.
7
Name
X
Definitions:
INTB
Port 2 has a pending IRQ.
INTA
Port 1 has a pending IRQ.
Note: Used when both ports are sharing the same IRQ line. The interrupt service routine must be able
to read this register to determine which port needs servicing.
Base + 0
Write
Bit No.
7
Name
X
Definitions:
PRT2_LB
Connects RS-232 signals from transceiver 2 to UART 2. Mainly for testing the boards
functions. Only TX, RX, RTS, CTS, DTR, and DSR are connected.
PRT1_LB
Connects RS-232 signals from transceiver 1 to UART 1. Mainly for testing the boards
functions. Only TX, RX, RTS, and CTS are connected.
Base + 1
Read/Write
Bit No.
7
Name
X
Definitions:
DOUT
One bit digital out register.
SLEEP
Set this bit to put wireless modem into sleep mode for lower power consumption.
INTERRUPT STATUS
6
5
4
X
X
X
TRANCEIVER/UART TEST
6
5
4
X
X
X
WIRELESS MODEM CONTROL
6
5
4
X
X
X
765300 - Pyxis User Manual
3
2
PRT2_LB PRT1_LB
INTB
3
2
PRT2_LB PRT1_LB
X
3
2
0
0
DOUT
1
0
INTA
1
0
X
1
0
SLEEP
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