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51 <h1> words/catch.asm </h1>
52  
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59 <pre>
60 ; ( xt -- ) Exceptions
61 ; R( -- ) or R( ny -- )
62 ; execute the XT and restore stack frame if an exception is thrown
63 VE_CATCH:
64 .db $05, &quot;catch&quot;
65 .dw VE_HEAD
66 .set VE_HEAD = VE_CATCH
67 XT_CATCH:
68 .dw DO_COLON
69 PFA_CATCH:
70 ; sp@ &gt;r
71 .dw XT_SP_FETCH
72 .dw XT_TO_R
73 ; handler @ &gt;r
74 .dw XT_HANDLER
75 .dw XT_FETCH
76 .dw XT_TO_R
77 ; rp@ handler !
78 .dw XT_RP_FETCH
79 .dw XT_HANDLER
80 .dw XT_STORE
81 .dw XT_EXECUTE
82 ; r&gt; handler !
83 .dw XT_R_FROM
84 .dw XT_HANDLER
85 .dw XT_STORE
86 .dw XT_R_FROM
87 .dw XT_DROP
88 .dw XT_ZERO
89 .dw XT_EXIT
90 </pre>
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