Zilog Z16C35 - Manual (Page 242)

Application Note
SCC in Binary Synchronous Communications
10-12
RECEIVE INT. SERVICE ROUTINE
00F4
GLOBAL
ENTRY
REC PROCEDURE
00F4 93F0 PUSH @RI5, R0
00F6 3A84 INB RL0, RR0A !READ STATUS FROM RR0A!
00F8 FE21
00FA A684 BITB RL0, #4 !TEST IF SYNC HUNT RESET!
00FC EE02 JR NZ, RESET !YES CALL RECEIVE ROUTINE!
00FE 5F00 CALL RECEIVE
0100 006C’
0102 C808 RESET: LDB RL0, #%08
0104 3A86 OUTB WR0A+2, RL0 !WAIT DISABLE!
0106 FE23
0108 C8D1 LDB RL0, #%D1
010A 3A86 OUTB WR0A+6, RL0 !ENTER HUNT MODE!
010C FE27
010E C820 LDB RL0, #%20
0110 3A86 OUTB WR0A, RL0 !ENABLE INT ON NEXT CHAR!
0112 FE21
0114 C838 LDB RL0, #%38
0116 3A86 OUTB WR0A, RL0 !RESET HIGHEST IUS!
0118 FE21
011A 97F0 POP R0, @RI5
011C 7B00 IRET
0IIE END REC
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