mirror of
https://github.com/A2osX/A2osX.git
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321 lines
6.2 KiB
Plaintext
321 lines
6.2 KiB
Plaintext
PR#3
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PREFIX /A2OSX.SRC
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NEW
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INC 1
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AUTO 6
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.LIST OFF
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*--------------------------------------
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* https://www.cise.ufl.edu/~cop4600/cgi-bin/lxr/http/source.cgi/lib/ansi/gmtime.c
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*--------------------------------------
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SECSDAY .EQ 86400 60*60*24
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CENTURY0 .EQ 19
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YEAR0 .EQ 70
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DAY0 .EQ 4 day 0 was a thursday
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*--------------------------------------
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* S.CTime2Time
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* In :
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* PULLW = Src CTIME DWORD
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* PULLW = Dst PTR To S.TIME
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*--------------------------------------
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S.CTime2Time >PULLW ZPQuickPtr1
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>PULLW ZPQuickPtr2
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ldy #3
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.1 lda (ZPQuickPtr1),y
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sta S.CTime.DWORD,y
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dey
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bpl .1
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stz S.CTime.DivDay
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stz S.CTime.DivDay+1
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.2 lda S.CTime.DWORD
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sta S.CTime.ModDay
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sec
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sbc #SECSDAY
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pha
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lda S.CTime.DWORD+1
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sta S.CTime.ModDay+1
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sbc /SECSDAY
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pha
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lda S.CTime.DWORD+2
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sta S.CTime.ModDay+2
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sbc #0
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pha
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lda S.CTime.DWORD+3
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sbc #0
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bcc .3 end of DIV/MOD ?
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sta S.CTime.DWORD+3
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pla
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sta S.CTime.DWORD+2
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pla
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sta S.CTime.DWORD+1
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pla
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sta S.CTime.DWORD
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inc S.CTime.DivDay
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bne .2
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inc S.CTime.DivDay+1
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bne .2
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.3 pla
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pla
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pla
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stz S.CTime.Div60
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stz S.CTime.Div60+1
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.4 lda S.CTime.ModDay
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sta S.CTime.Mod
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sec
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sbc #60
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pha
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lda S.CTime.ModDay+1
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sbc #0
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pha
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lda S.CTime.ModDay+2
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sbc #0
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bcc .5
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sta S.CTime.ModDay+2
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pla
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sta S.CTime.ModDay+1
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pla
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sta S.CTime.ModDay
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inc S.CTime.Div60
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bne .4
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inc S.CTime.Div60+1
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bne .4
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.5 pla
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pla
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lda S.CTime.Mod
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ldy #S.TIME.SECOND
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sta (ZPQuickPtr2),y
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stz S.CTime.Div3600
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.6 lda S.CTime.Div60
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sta S.CTime.Mod
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sec
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sbc #60
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pha
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lda S.CTime.Div60+1
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sbc #0
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pha
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bcc .7
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sta S.CTime.Div60+1
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pla
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sta S.CTime.Div60
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inc S.CTime.Div3600
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bne .6
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.7 pla
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lda S.CTime.Mod
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dey ldy #S.TIME.MINUTE
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sta (ZPQuickPtr2),y
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lda S.CTime.Div3600
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dey ldy #S.TIME.HOUR
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sta (ZPQuickPtr2),y
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lda S.CTime.DivDay WDAY computation : (DivDay + DAY0) mod 7
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clc
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adc #DAY0
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pha
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lda S.CTime.DivDay+1
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adc /DAY0
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eor #$ff
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tax
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pla
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.8 sta S.CTime.Mod
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sec
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sbc #7
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bcs .8
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inx
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bne .8
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lda S.CTime.Mod
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ldy #S.TIME.WDAY
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sta (ZPQuickPtr2),y
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lda #CENTURY0
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sta S.CTime.Century
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lda #YEAR0
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sta S.CTime.Year
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.9 ldy S.CTime.Century
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lda S.CTime.Year
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jsr S.IsLeapYearYA if Leap year CC
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lda S.CTime.DivDay
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sbc #365
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pha
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lda S.CTime.DivDay+1
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sbc /365
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bcc .10
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sta S.CTime.DivDay+1
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pla
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sta S.CTime.DivDay
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inc S.CTime.Year
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lda S.CTime.Year
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cmp #100
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bne .9
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stz S.CTime.Year
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inc S.CTime.Century
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bne .9
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.10 pla
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lda S.CTime.Century
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* ldy #S.TIME.CENTURY
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sta (ZPQuickPtr2)
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ldy #S.TIME.YEAR
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lda S.CTime.Year
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sta (ZPQuickPtr2),y
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*--------------------------------------
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S.CTime.DWORD .BS 4
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S.CTime.DivDay .BS 2
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S.CTime.ModDay .BS 3
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S.CTime.Div60 .BS 2
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S.CTime.Div3600 .BS 1
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S.CTime.Mod .BS 1
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S.CTime.Century .BS 1
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S.CTime.Year .BS 1
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*--------------------------------------
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* S.TimeYA get System Time
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* In :
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* Y,A = PTR to S.TIME
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* Out :
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* S.TIME filled with ProDOS MLI date/time
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*--------------------------------------
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S.TimeYA >STYA ZPQuickPtr2
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>MLICALL MLIGETTIME
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>LDYAI DATELO
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>STYA ZPQuickPtr1
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bra S.PTime2Time.1
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*--------------------------------------
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* In :
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* PULLW = Src PDATE/TIME (DWORD)
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* PULLW = Dst PTR To S.TIME
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*--------------------------------------
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S.PTime2Time >PULLW ZPQuickPtr1
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>PULLW ZPQuickPtr2
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S.PTime2Time.1 lda (ZPQuickPtr1) Get Year
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lsr C is high bit of month
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ldy #S.TIME.YEAR
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sta (ZPQuickPtr2),y set year
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pla save it for century adjust
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ldy #1
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lda (ZPQuickPtr1),y Get Month/day
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pha save Day
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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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ldy #S.TIME.MONTH
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sta (ZPQuickPtr2),y set month
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pla get back day
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and #$1F
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iny
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sta (ZPQuickPtr2),y set day
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pla get back year
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cmp #70 if before 70's CC
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lda #19
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adc #0 set date before 1970 -> 20xx
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sta (ZPQuickPtr2) set Century
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ldy #3
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lda (ZPQuickPtr1),y Get Min
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tax
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dey
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lda (ZPQuickPtr1),y Get Hour
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ldy #S.TIME.HOUR
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sta (ZPQuickPtr2),y set hour
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iny
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txa
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sta (ZPQuickPtr2),y set min
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iny
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lda #0
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sta (ZPQuickPtr2),y set seconds (ProDOS does not provide it)
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S.ComputeWDAY
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clc
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rts
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*--------------------------------------
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* S.StrFTime
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* In :
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* PULLW = Src PTR To S.TIME
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* PULLW = Src PTR To Format String
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* %a Abbreviated weekday name : Thu
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* %A Full weekday name : Thursday
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* %b Abbreviated month name : Aug
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* %B Full month name : August
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* %d Day of the month, zero-padded (01-31)
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* %H Hour in 24h format (00-23) 14
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* %I Hour in 12h format (01-12) 02
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* %m Month as a decimal number (01-12) 08
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* %M Minute (00-59) 55
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* %p AM or PM designation PM
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* %S Second (00-61) 02
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* %w Weekday as a decimal number with Sunday as 0 (0-6)
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* %y Year, last two digits (00-99)
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* %Y Year four digits 2001
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* PULLW = Dst PSTR Buffer
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*--------------------------------------
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S.StrFTime
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clc
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rts
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*--------------------------------------
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* Y = Century
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* A = Year (0..99)
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* if (year mod 400 = 0)
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* or
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* if not (year mod 100 = 0) and (year mod 4 = 0)
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*--------------------------------------
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S.IsLeapYearYA tax Year = 00 ?
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bne .1 no
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tya year = 00, get century in a
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and #$3 mod 4 = 0 ?
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beq .9 leap year
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.8 sec not leap
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rts
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.1 and #$3 mod 4 = 0 ?
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bne .8
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.9 clc Leap
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rts
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*--------------------------------------
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MAN
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SAVE SYS/KERNEL.S.TIME
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LOAD SYS/KERNEL.S
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ASM
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