Z85233 Datasheet, PDF (225/317 Pages) Zilog, Inc. – The Zilog SCC Serial Communication Controller

Application Note
SCC in Binary Synchronous Communications
RECEIVE INT. SERVICE ROUTINE
00F4
00F4
00F6
00F8
00FA
00FC
00FE
0100
0102
0104
0106
0108
010A
010C
010E
0110
0112
0114
0116
0118
011A
011C
0IIE
93F0
3A84
FE21
A684
EE02
5F00
006C’
C808
3A86
FE23
C8D1
3A86
FE27
C820
3A86
FE21
C838
3A86
FE21
97F0
7B00
GLOBAL
ENTRY
REC
PUSH
INB
BITB
JR
CALL
RESET:
LDB
OUTB
LDB
OUTB
LDB
OUTB
LDB
OUTB
END REC
POP
IRET
PROCEDURE
@RI5, R0
RL0, RR0A
RL0, #4
NZ, RESET
RECEIVE
RL0, #%08
WR0A+2, RL0
RL0, #%D1
WR0A+6, RL0
RL0, #%20
WR0A, RL0
RL0, #%38
WR0A, RL0
R0, @RI5
!READ STATUS FROM RR0A!
!TEST IF SYNC HUNT RESET!
!YES CALL RECEIVE ROUTINE!
!WAIT DISABLE!
!ENTER HUNT MODE!
!ENABLE INT ON NEXT CHAR!
!RESET HIGHEST IUS!
6-90
UM010901-0601