MVME51005E Single Board Computer Installation and Use (6806800A38B)
7 Programming the MVME5100
80
The MVME5100 routes the interrupts from the PMCs and PCI expansion slots as follows:
DMA Channels
The PIB supports seven DMA channels. They are not functional on the MVME5100.
Sources of Reset
The MVME5100 has nine potential sources of reset:
1. Power-on reset
2.
RST
switch (resets the VMEbus when the MVME5100 is system controller)
3. Watchdog timer Reset function controlled by the SGS-Thomson MK48T559
timekeeper device (resets the VMEbus when the MVME5100 is system controller)
4. ALT_RST
∗
function controlled by the Port 92 register in the PIB (resets the VMEbus
when the MVME5100 is system controller)
5. PCI/ISA I/O Reset function controlled by the Clock Divisor register in the PIB
6. The VMEbus SYSRESET
∗
signal
7. VMEbus Reset sources from the Universe ASIC (PCI/VME bus bridge controller): the
System Software reset, Local Software Reset and VME CSR Reset functions.
Note
On the MVME5100, Watchdog Timer 2 is a source of reset
only
if component R206 is
installed on the board.
Table 7-5
shows which devices are affected by the various types of resets. For details on using
resets, refer to the
MVME5100-Series Single Board Computer Programmer’s Reference Guide.
Hawk MPIC
PMC Slot 1
INTA# INTB# INTC# INTD#
PMC Slot 2
INTA# INTB# INTC# INTD#
PCIX Slot
INTA# INTB# INTC# INTD#
IRQ9 IRQ10 IRQ11 IRQ12