Motorola MVME2400 manual DMA Channels, Sources of Reset

Programming the MVME240x

PMC Slot 1

PMC Slot 2

PCIX Slot

INTA# INTB# INTC# INTD#

INTA# INTB# INTC# INTD#

INTA# INTB# INTC# INTD#

4

IRQ9 IRQ10 IRQ11 IRQ12

Hawk MPIC

DMA Channels

The PIB supports seven DMA channels. They are not functional on the

MVME240x.

Sources of Reset

The MVME240x has nine potential sources of reset:

1.Power-on reset

2.RST switch (resets the VMEbus when the MVME240x is system controller)

3.Watchdog timer Reset function controlled by the SGS-Thomson MK48T559 timekeeper device (resets the VMEbus when the MVME240x is system controller)

4.ALT_RST∗ function controlled by the Port 92 register in the PIB (resets the VMEbus when the MVME240x is system controller)

5.PCI/ISA I/O Reset function controlled by the Clock Divisor register in the PIB

6.The VMEbus SYSRESET∗ signal

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