Error Conditions

1

 

SCC LTO Error

Description:

Local Bus Time-out occurred while the SCC was Local

 

Bus master.

MPU Notification:

SCC Transmit Interrupt or SCC Receive Interrupt

Status:

SCC Transmit Interrupt Status register

 

SCC Transmit Current Buffer Address register

 

SCC Receive Interrupt Status register High

 

SCC Receive Current Buffer Address register PCCchip2

 

SCC Error Status register ($FFF4201C)

Comments:

SCC Transmit and Receive interrupt enables are controlled

 

in the SCC and in the PCCchip2.

LAN Parity Error

Description:

Parity error while the LANCE was reading DRAM

MPU Notification:

PCCchip2 Interrupt (LAN ERROR IRQ)

Status:

PCCchip2 LAN Error Status register ($FFF42028)

Comments:

The LANCE has no ability to respond to TEA so the error

 

interrupt and status are provided in the PCCchip2. Control

 

for the interrupt is in the PCCchip2 LAN Error Interrupt

 

Control register ($FFF4202B).

LAN Offboard Error

Description:

Error encountered while the LANCE was attempting to go

 

to the VMEbus.

MPU Notification:

PCCchip2 Interrupt (LAN ERROR IRQ)

Status:

PCCchip2 LAN Error Status register ($FFF42028)

Comments:

The LANCE has no ability to respond to TEA so the error

 

interrupt and status are provided in the PCCchip2. Control

 

for the interrupt is in the PCCchip2 LAN Error Interrupt

 

Control register ($FFF4202B).

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Motorola MVME1X7P manual SCC LTO Error, LAN Parity Error, LAN Offboard Error