A2osX/SYS/KERNEL.S.TIME.txt

383 lines
7.0 KiB
Plaintext
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

PR#3
PREFIX /A2OSX.SRC
NEW
INC 1
AUTO 6
.LIST OFF
*--------------------------------------
* https://www.cise.ufl.edu/~cop4600/cgi-bin/lxr/http/source.cgi/lib/ansi/gmtime.c
*--------------------------------------
SECSDAY .EQ 86400 60*60*24
CENTURY0 .EQ 19
YEAR0 .EQ 70
DAY0 .EQ 4 day 0 was a thursday
*--------------------------------------
* K.TimeYA get System Time
* In :
* Y,A = PTR to K.Time
* Out :
* K.Time filled with ProDOS MLI date/time
*--------------------------------------
K.TimeYA >STYA ZPQuickPtr2
>MLICALL MLIGETTIME
>LDYAI DATELO
>STYA ZPQuickPtr1
bra K.PTime2Time.1
*--------------------------------------
* In :
* PULLW = Src PDATE/TIME (DWORD)
* PULLW = Dst PTR To K.Time
*--------------------------------------
K.PTime2Time >PULLW ZPQuickPtr1
>PULLW ZPQuickPtr2
K.PTime2Time.1 ldy #1
lda (ZPQuickPtr1),y Get Year
lsr C is high bit of month
ldy #S.Time.YEAR
sta (ZPQuickPtr2),y set year
sta K.CTime.Year for conputing Century/WDAY later
lda (ZPQuickPtr1) Get Month/day
pha save Day
ror
lsr
lsr
lsr
lsr
ldy #S.Time.MONTH
sta (ZPQuickPtr2),y set month
pla get back day
and #$1F
iny
sta (ZPQuickPtr2),y set day
lda K.CTime.Year get back year
cmp #69 if before 70 CC,if > 70, CS
lda #0
rol get back C in bit 0
eor #1 toggle C
adc #19 set date before 1970 -> 20xx
sta (ZPQuickPtr2) set Century
sta K.CTime.Century for conputing WDAY later
ldy #2
lda (ZPQuickPtr1),y Get Min
tax
iny
lda (ZPQuickPtr1),y Get Hour
ldy #S.Time.HOUR
sta (ZPQuickPtr2),y set hour
iny
txa
sta (ZPQuickPtr2),y set min
iny
lda #0
sta (ZPQuickPtr2),y set seconds (ProDOS does not provide it)
* 1/1/1970 was Thursday...if not leap, add one, if leap add 2
K.ComputeWDAY lda #3 Thursday : 4 (-1 for mod 7)
pha
lda #19
sta K.CTime.DWORD
lda #70
sta K.CTime.DWORD+1
.1 ldy K.CTime.DWORD
lda K.CTime.DWORD+1
cpy K.CTime.Century
bne .2
cmp K.CTime.Year
beq .4
.2 jsr TIME.IsLeapYearYA CC = Leap
lda #0
rol
eor #1
lsr
pla
adc #1
cmp #7
bcc .3
sbc #7 MOD 7
.3 pha
inc K.CTime.DWORD+1
lda K.CTime.DWORD+1
cmp #100
bne .1
lda #0
sta K.CTime.DWORD+1
inc K.CTime.DWORD
bra .1
.4 ldy #S.Time.MONTH
lda (ZPQuickPtr2),y get month
tax
.5 lda K.StrFTime.MDAY-1,x get day count in this month
bne .6 february ?
ldy K.CTime.Century
lda K.CTime.Year
jsr TIME.IsLeapYearYA CC = Leap
lda #0
rol
eor #1
lsr
.6 pla
adc K.StrFTime.MDAY-1,x
cmp #7
bcc .7
sbc #7
.7 pha
dex
bne .5
pla
ldy #S.Time.DAY
adc (ZPQuickPtr2),y get month (1..31)
dec adjust range 0.31 for MOD 7
.8 cmp #7 MOD 7
bcc .80
sbc #7
bra .8
.80 inc adjust range 1..7
ldy #S.Time.WDAY
sta (ZPQuickPtr2),y
clc
rts
*--------------------------------------
* K.CTime2Time
* In :
* PULLW = Src CTIME DWORD
* PULLW = Dst PTR To K.Time
*--------------------------------------
K.CTime2Time >PULLW ZPQuickPtr1
>PULLW ZPQuickPtr2
ldy #3
.1 lda (ZPQuickPtr1),y
sta K.CTime.DWORD,y
dey
bpl .1
stz K.CTime.DivDay
stz K.CTime.DivDay+1
.2 lda K.CTime.DWORD
sta K.CTime.ModDay
sec
sbc #SECSDAY
pha
lda K.CTime.DWORD+1
sta K.CTime.ModDay+1
sbc /SECSDAY
pha
lda K.CTime.DWORD+2
sta K.CTime.ModDay+2
sbc #0
pha
lda K.CTime.DWORD+3
sbc #0
bcc .3 end of DIV/MOD ?
sta K.CTime.DWORD+3
pla
sta K.CTime.DWORD+2
pla
sta K.CTime.DWORD+1
pla
sta K.CTime.DWORD
inc K.CTime.DivDay
bne .2
inc K.CTime.DivDay+1
bne .2
.3 pla
pla
pla
stz K.CTime.Div60
stz K.CTime.Div60+1
.4 lda K.CTime.ModDay
sta K.CTime.Mod
sec
sbc #60
pha
lda K.CTime.ModDay+1
sbc #0
pha
lda K.CTime.ModDay+2
sbc #0
bcc .5
sta K.CTime.ModDay+2
pla
sta K.CTime.ModDay+1
pla
sta K.CTime.ModDay
inc K.CTime.Div60
bne .4
inc K.CTime.Div60+1
bne .4
.5 pla
pla
lda K.CTime.Mod
ldy #S.Time.SECOND
sta (ZPQuickPtr2),y
stz K.CTime.Div3600
.6 lda K.CTime.Div60
sta K.CTime.Mod
sec
sbc #60
pha
lda K.CTime.Div60+1
sbc #0
pha
bcc .7
sta K.CTime.Div60+1
pla
sta K.CTime.Div60
inc K.CTime.Div3600
bne .6
.7 pla
lda K.CTime.Mod
dey ldy #S.Time.MINUTE
sta (ZPQuickPtr2),y
lda K.CTime.Div3600
dey ldy #S.Time.HOUR
sta (ZPQuickPtr2),y
lda K.CTime.DivDay WDAY computation : (DivDay + DAY0) mod 7
clc
adc #DAY0
pha
lda K.CTime.DivDay+1
adc /DAY0
eor #$ff
tax
pla
.8 sta K.CTime.Mod
sec
sbc #7
bcs .8
inx
bne .8
lda K.CTime.Mod
ldy #S.Time.WDAY
sta (ZPQuickPtr2),y
lda #CENTURY0
sta K.CTime.Century
lda #YEAR0
sta K.CTime.Year
K.CTime2Time.Year
.1 ldy K.CTime.Century
lda K.CTime.Year
jsr TIME.IsLeapYearYA if Leap year CC
lda K.CTime.DivDay
sbc #365
pha
lda K.CTime.DivDay+1
sbc /365
bcc .2
sta K.CTime.DivDay+1
pla
sta K.CTime.DivDay
inc K.CTime.Year
lda K.CTime.Year
cmp #100
bne .1
stz K.CTime.Year
inc K.CTime.Century
bne .1
.2 pla
lda K.CTime.Century
* ldy #S.Time.CENTURY
sta (ZPQuickPtr2)
ldy #S.Time.YEAR
lda K.CTime.Year
sta (ZPQuickPtr2),y
clc
rts
*--------------------------------------
* In :
* Y = Century
* A = Year (0..99)
* if (year mod 400 = 0)
* or
* if not (year mod 100 = 0) and (year mod 4 = 0)
* Out :
* CC = Leap
* CS = Not Leap
*--------------------------------------
TIME.IsLeapYearYA
cmp #0 Year = 00 ?
bne .1 no
tya year = 00, get century in a
and #$3 mod 4 = 0 ?
beq .9 leap year
.8 sec not leap
rts
.1 and #$3 mod 4 = 0 ?
bne .8
.9 clc Leap
rts
*--------------------------------------
K.StrFTime.MDAY .DA #3,#0,#3,#2,#3,#2,#3,#3,#2,#3,#2,#3
K.CTime.DWORD .BS 4
K.CTime.DivDay .BS 2
K.CTime.ModDay .BS 3
K.CTime.Div60 .BS 2
K.CTime.Div3600 .BS 1
K.CTime.Mod .BS 1
K.CTime.Century .BS 1
K.CTime.Year .BS 1
MAN
SAVE SYS/KERNEL.S.Time
LOAD SYS/KERNEL.S
ASM