P80C592 Philips Semiconductors, P80C592 Datasheet - Page 100

• Manufacturer Part Number: P80C592
• Description: 8-bit microcontroller with on-chip CAN
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1996 Jun 27
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8-bit microcontroller with on-chip CAN
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CAN_INT_HANDLER:
;dispatcher-----------------------------------------------------------------------------------------------
INT_TEST0:
INT_TEST1:
; end of dispatcher------------------------------------------------------------------------------------
;Rx-serve--------------------------------------------------------------------------------------------------
; copy message (Data-Field only) from CAN- to CPU memory
CAN_RX_SERVE
; first save used registers
PUSH
PUSH
; store the CAN-controller's Interrupt Register contents
; (here: at a bit-addressable location).
; This is necessary because after reading the Interrupt Register
; its contents is cleared, but
; may be set in coincidence.
MOV
ANL
MOV
JBC
; here the dispatcher has to be completed according
; to the application-specific requirements
; ...
; ...
; read 2nd Descriptor-Byte from the Rx-Buffer (address 21)
MOV
MOV
CAN_INT_RX,CAN_RX_SERV
100
PSW
ACC
A, CANON
A, #INT_FLAG_MASK
CAN_INT_IMAGE, A
CANADR, #CAN_REF + 1
A, CANDAT
on the other hand
; only interrupt-flags
;receive-interrupt?
several flags
Product specification
P8xC592