29 lines
423 B
C
29 lines
423 B
C
#include "mc8051fun.h"
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#include "bcd.h"
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#pragma disable_warning 59 // Disable "must return a value" warning
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uint8_t long_add(__idata uint8_t *v1, __idata uint8_t *v2,uint8_t len) __reentrant
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{
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(void)v1; (void)v2; (void)len;
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__asm
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mov a,_bp
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add a,#0xfd
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mov r0,a
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mov a,@r0 ; *v2
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dec r0
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mov r1,a
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mov a,@r0 ; len
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mov r7,a
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mov r0,dpl
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lcall long_invert
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mov dpl,#0x00
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jnc $002
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inc dpl
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$002:
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__endasm;
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}
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