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comparison src/parse.s @ 131:95f174bf459b

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Add error handling for immediate mode loop
author William Astle <lost@l-w.ca>
date Sat, 18 May 2024 00:41:46 -0600
parents 9f23ddc5165f
children 917b4893bb3d
comparison
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130:9f23ddc5165f 131:95f174bf459b
40 parse1 cmpb ,x ; did we match a valid command token? 40 parse1 cmpb ,x ; did we match a valid command token?
41 beq parse3 ; brif so 41 beq parse3 ; brif so
42 leax 3,x ; move to next entry 42 leax 3,x ; move to next entry
43 cmpx #parsetab_cmde ; end of table? 43 cmpx #parsetab_cmde ; end of table?
44 blo parse1 ; brif not 44 blo parse1 ; brif not
45 bra parse_errorsn ; fell off the end
45 parse3 jsr [1,x] ; call the handler 46 parse3 jsr [1,x] ; call the handler
46 bcs parse_error ; brif the handler indicated error 47 bcs parse_error ; brif the handler indicated error
47 bsr parse_curtoken ; fetch the token we left off on 48 bsr parse_curtoken ; fetch the token we left off on
48 cmpb #token_eot ; end of input? 49 cmpb #token_eot ; end of input?
49 bne parse4 ; brif not 50 bne parse4 ; brif not