Motorola MVME2600 用户手册
3-16
Computer Group Literature Center Web Site
Functional Description
3
ABORT Switch (S1)
The
ABORT
switch is located on the LED mezzanine. When activated by
software, the
ABORT
switch can generate an interrupt signal from the base
board to the processor. The interrupt is normally used to abort program
execution and return control to the debugger firmware located in the
MVME2603/2604 EPROM and Flash memory. The interrupt signal
reaches the processor module via ISA bus interrupt line IRQ8
execution and return control to the debugger firmware located in the
MVME2603/2604 EPROM and Flash memory. The interrupt signal
reaches the processor module via ISA bus interrupt line IRQ8
∗
. The signal
is also available at pin PB7 of the Z8536 CIO device, which handles
various status signals, serial I/O lines, and counters.
various status signals, serial I/O lines, and counters.
The interrupter connected to the
ABORT
switch is an edge-sensitive circuit,
filtered to remove switch bounce.
RESET Switch (S2)
The
RESET
switch is located on the LED mezzanine. The
RESET
switch
resets all onboard devices; it also drives a
SYSRESET
∗
signal if the
MVME2603/2604 is the system controller.
7
RLB4
7
DCD4
8
IDREQ
∗
8
TM4/MID2
9
DTR1
9
RI4
10
DTR2
10
RI1
11
Reserved
11
DSR1
12
Reserved
12
DCD1
13
Reserved
13
RI2
14
Reserved
14
DSR2
15
Reserved
15
DCD2
Table 3-2. P2 Multiplexing Sequence (Continued)
MXDO (From Base Board)
MXDI (From MVME761)
Time Slot
Signal Name
Time Slot
Signal Name