Motorola MVME5100, Single Board Computer manual DMA Channels, Sources of Reset

Programming Considerations

The MVME510x routes the interrupts from the PMCs and PCI expansion slots as follows:

PMC Slot 1

PMC Slot 2

PCIX Slot

INTA# INTB# INTC# INTD#

INTA# INTB# INTC# INTD#

INTA# INTB# INTC# INTD#

IRQ9 IRQ10 IRQ11 IRQ12

Hawk MPIC

6

DMA Channels

The PIB supports seven DMA channels. They are not functional on the MVME510x.

Sources of Reset

The MVME510x has nine potential sources of reset:

1.Power-on reset

2.RST switch (resets the VMEbus when the MVME510x is system controller)

3.Watchdog timer Reset function controlled by the SGS-Thomson MK48T559 timekeeper device (resets the VMEbus when the MVME510x is system controller)

4.ALT_RST∗ function controlled by the Port 92 register in the PIB (resets the VMEbus when the MVME510x is system controller)

http://www.motorola.com/computer/literature 6-11