v0.78: VM performance improvement, removed debug printout on error
This commit is contained in:
Bobbi Webber-Manners
parent
8765cfce25
commit
86e517a6eb
BIN
bin/8ball20.prg
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bin/8ball20.prg
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bin/8ball64.prg
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bin/8ball64.prg
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bin/disass
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bin/disass
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bin/disass20.prg
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bin/disass20.prg
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bin/disass64.prg
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bin/disass64.prg
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bin/eightball
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bin/eightball
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bin/eightballvm
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bin/eightballvm
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@ -400,9 +400,6 @@ void error(unsigned char errcode)
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{
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printchar('?');
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print(errmsgs[errcode - ERR_FIRST]);
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print(" \"");
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print(txtPtr);
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print("\"\n");
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}
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#ifdef A2E
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#pragma code-name (pop)
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@ -37,7 +37,7 @@
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/* */
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/**************************************************************************/
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#define VERSIONSTR "0.77"
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#define VERSIONSTR "0.78"
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void print(char *str);
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370
eightballvm.c
370
eightballvm.c
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@ -180,9 +180,6 @@ unsigned char *memory = 0;
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#define CHECKSTACKOVERFLOW(bytes)
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#endif
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/* Handler for unsupported bytecode */
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#define UNSUPPORTED() unsupported()
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#ifdef STACKCHECKS
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/*
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* Check for evaluation stack underflow.
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@ -1084,76 +1081,264 @@ typedef void (*func)(void);
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* Must be in same order as enum bytecode.
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*/
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func jumptbl[] = {
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vm_end,
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vm_ldimm,
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vm_ldaword,
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vm_ldawordimm,
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vm_ldabyte,
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vm_ldabyteimm,
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vm_staword,
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vm_stawordimm,
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vm_stabyte,
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vm_stabyteimm,
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vm_ldrword,
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vm_ldrwordimm,
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vm_ldrbyte,
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vm_ldrbyteimm,
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vm_strword,
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vm_strwordimm,
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vm_strbyte,
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vm_strbyteimm,
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vm_swap,
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vm_dup,
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vm_dup2,
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vm_drop,
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vm_over,
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vm_pick,
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vm_popword,
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vm_popbyte,
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vm_pshword,
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vm_pshbyte,
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vm_discard,
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vm_sptofp,
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vm_fptosp,
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vm_ator,
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vm_rtoa,
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vm_inc,
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vm_dec,
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vm_add,
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vm_sub,
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vm_mul,
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vm_div,
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vm_mod,
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vm_neg,
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vm_gt,
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vm_gte,
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vm_lt,
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vm_lte,
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vm_eql,
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vm_neql,
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vm_and,
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vm_or,
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vm_not,
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vm_bitand,
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vm_bitor,
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vm_bitxor,
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vm_bitnot,
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vm_lsh,
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vm_rsh,
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vm_jmp,
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vm_jmpimm,
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vm_brnch,
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vm_brnchimm,
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vm_jsr,
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vm_jsrimm,
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vm_rts,
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vm_prdec,
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vm_prhex,
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vm_prch,
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vm_prstr,
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vm_prmsg,
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vm_kbdch,
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vm_kbdln};
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vm_end,
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vm_ldimm,
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vm_ldaword,
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vm_ldawordimm,
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vm_ldabyte,
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vm_ldabyteimm,
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vm_staword,
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vm_stawordimm,
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vm_stabyte,
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vm_stabyteimm,
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vm_ldrword,
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vm_ldrwordimm,
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vm_ldrbyte,
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vm_ldrbyteimm,
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vm_strword,
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vm_strwordimm,
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vm_strbyte,
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vm_strbyteimm,
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vm_swap,
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vm_dup,
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vm_dup2,
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vm_drop,
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vm_over,
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vm_pick,
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vm_popword,
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vm_popbyte,
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vm_pshword,
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vm_pshbyte,
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vm_discard,
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vm_sptofp,
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vm_fptosp,
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vm_ator,
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vm_rtoa,
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vm_inc,
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vm_dec,
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vm_add,
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vm_sub,
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vm_mul,
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vm_div,
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vm_mod,
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vm_neg,
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vm_gt,
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vm_gte,
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vm_lt,
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vm_lte,
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vm_eql,
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vm_neql,
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vm_and,
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vm_or,
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vm_not,
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vm_bitand,
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vm_bitor,
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vm_bitxor,
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vm_bitnot,
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vm_lsh,
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vm_rsh,
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vm_jmp,
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vm_jmpimm,
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vm_brnch,
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vm_brnchimm,
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vm_jsr,
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vm_jsrimm,
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vm_rts,
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vm_prdec,
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vm_prhex,
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vm_prch,
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vm_prstr,
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vm_prmsg,
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vm_kbdch,
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vm_kbdln,
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unsupported /* Should be at least 255 lines long */
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};
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/*
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* Fetch, decode and execute a VM instruction.
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@ -1255,7 +1440,46 @@ void execute()
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#endif
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#endif
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#ifndef A2E
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jumptbl[MEM(pc)]();
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#else
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#if 0
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/* Slight speedup versus the code emitted by cc65 */
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__asm__("ml: lda (_pc)");
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__asm__(" stz tmp1");
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__asm__(" asl a");
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__asm__(" rol tmp1");
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__asm__(" clc");
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__asm__(" adc #<(_jumptbl)");
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__asm__(" sta ptr1");
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__asm__(" lda tmp1");
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__asm__(" adc #>(_jumptbl)");
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__asm__(" sta ptr1+1");
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__asm__(" ldy #$01");
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__asm__(" lda (ptr1),y");
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__asm__(" tax");
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__asm__(" lda (ptr1)");
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__asm__(" jsr callax");
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__asm__(" bra ml");
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#else
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/* This version assumes (_pc) < 128, saves a few more cycles */
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/* Slight speedup versus the code emitted by cc65 */
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__asm__("ml: lda (_pc)");
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__asm__(" asl a");
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__asm__(" clc");
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__asm__(" adc #<(_jumptbl)");
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__asm__(" sta ptr1");
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__asm__(" lda #$00");
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__asm__(" adc #>(_jumptbl)");
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__asm__(" sta ptr1+1");
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__asm__(" ldy #$01");
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__asm__(" lda (ptr1),y");
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__asm__(" tax");
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__asm__(" lda (ptr1)");
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__asm__(" jsr callax");
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__asm__(" bra ml");
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#endif
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#endif
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}
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};
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