Motorola MVME2400 Series Wartungshandbuch PDF herunterladen (Seite 247)

Programming Model

http://www.mcg.mot.com/literature 3-61

DPE_DP DPE_DP is the value that was on the DP0-DP7 signals

when the dpelog

bit was set.

dpe_ckall

When dpe_ckall is set, the Hawk checks data parity on all

cycles in which TA_ is asserted. When dpe_ckall

cleared, the Hawk checks data parity on cycles when TA_

is asserted only during writes to the Hawk.

Note that the Hawk does not check parity during cycles in

which there is a qualified ARTRY_ at the same time as the

TA _

dpe_me

When dpe_me is set, the transition of the dpelog bit from

false to true causes the Hawk to pulse its machine check

interrupt request pin (MCHK0_) true. When dpe_me

cleared, the Hawk does not assert its MCHK0_ pin based

on the dpelog

bit.

GWDP

The GWDP0-GWDP7 bits are used to invert the value

that is driven onto DP0-DP7 respectively during reads to

the Hawk. This allows test software to generate wrong

(even) parity on selected byte lanes. For example, to

create a parity error on DH24-DH31 and DP3 during

Hawk reads, software should set GWDP3.

Data Parity Error Address Register

DPE_A DPE_A is the address of the last PPC60x data bus parity

error that was logged by the Hawk. It is updated only

when dpelog

goes from 0 to 1.

ADDRESS

$FEF80070

BIT

NAME

DPE_A

OPERATION

READ ONLY

RESET

0 PL

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Motorola MVME2400 Series Wartungshandbuch Seite 247