2002-11-12 22:49:38 +00:00
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;
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2007-01-05 16:16:34 +00:00
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; Oliver Schmidt, 22.08.2006
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2002-11-12 22:49:38 +00:00
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;
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; time_t _systime (void);
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; /* Similar to time(), but:
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2014-06-30 09:10:35 +00:00
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; ** - Is not ISO C
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; ** - Does not take the additional pointer
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; ** - Does not set errno when returning -1
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; */
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2002-11-12 22:49:38 +00:00
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;
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2009-07-27 17:59:27 +00:00
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.include "time.inc"
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2013-05-09 11:56:54 +00:00
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.include "zeropage.inc"
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.include "mli.inc"
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2007-01-05 16:16:34 +00:00
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2005-01-06 12:26:47 +00:00
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__systime:
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2013-05-09 11:56:54 +00:00
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; Update time
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lda #GET_TIME_CALL
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ldx #GET_TIME_COUNT
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jsr callmli
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bcs err
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lda DATELO+1
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lsr
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php ; Save month msb
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cmp #70 ; Year < 70?
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bcs :+ ; No, leave alone
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adc #100 ; Move 19xx to 20xx
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: sta TM + tm::tm_year
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lda DATELO
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tax ; Save day
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plp ; Restore month msb
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ror
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lsr
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lsr
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lsr
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lsr
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beq err ; [1..12] allows for validity check
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tay
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dey ; Move [1..12] to [0..11]
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sty TM + tm::tm_mon
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txa ; Restore day
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and #%00011111
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sta TM + tm::tm_mday
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lda TIMELO+1
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sta TM + tm::tm_hour
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lda TIMELO
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sta TM + tm::tm_min
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lda #<TM
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ldx #>TM
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jmp _mktime
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err: lda #$FF
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tax
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sta sreg
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sta sreg+1
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rts ; Return -1
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.bss
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TM: .tag tm
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