2022-04-19 18:24:34 +00:00
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NEW
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AUTO 3,1
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*--------------------------------------
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* Driver For ROMXce Clock
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*--------------------------------------
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* we can safely use $200, PCL/H, AIL/H (used by TCLK)
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*--------------------------------------
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XCLK.API.RTCBUF .EQ $2B0
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2022-04-20 17:37:15 +00:00
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XCLK.API.RDCLK .EQ $D8F0
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2022-04-19 18:24:34 +00:00
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*--------------------------------------
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XCLK.START php
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sei
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2022-06-12 20:42:22 +00:00
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ldx #XCLK.START2xx.L-1
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2022-04-19 18:24:34 +00:00
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.1 lda XCLK.START2xx,X
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sta XCLK.CODE2xx,X
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dex
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bpl .1
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jsr XCLK.CODE2xx
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* Minutes
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lda XCLK.API.RTCBUF+1
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and #%01111111 59
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jsr XCLK.BCD2BIN
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sta TIMELO
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* Hour
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lda XCLK.API.RTCBUF+2
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and #%00111111 23
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jsr XCLK.BCD2BIN
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sta TIMELO+1
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* Day
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lda XCLK.API.RTCBUF+4
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and #%00111111 31
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jsr XCLK.BCD2BIN
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sta DATELO
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* Year
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lda XCLK.API.RTCBUF+6 99
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jsr XCLK.BCD2BIN
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sta DATELO+1
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* Month
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lda XCLK.API.RTCBUF+5
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and #%00011111 12
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jsr XCLK.BCD2BIN
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asl
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asl
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asl
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asl
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asl
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tsb DATELO
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rol DATELO+1
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plp
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rts
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XCLK.BCD2BIN tax
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and #$F0
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lsr CC
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sta PCL temp location
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lsr CC
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lsr CC
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adc PCL
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sta PCL
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txa
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* clc
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and #$0F
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adc PCL
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rts
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XCLK.START2xx bit RROMBNK2
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sta $C070
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bit $FACA
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bit $FACA
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bit $FAFE
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jsr XCLK.API.RDCLK
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bit $F851
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bit RRAMWRAMBNK1
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bit RRAMWRAMBNK1
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rts
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XCLK.START2xx.L .EQ *-XCLK.START2xx
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*--------------------------------------
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XCLK.CODE2xx .EQ XCLK.API.RTCBUF-XCLK.START2xx.L
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*--------------------------------------
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.LIST ON
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XCLK.LEN .EQ *-XCLK.START
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.LIST OFF
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*--------------------------------------
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* CONTROL SECTION :
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*--------------------------------------
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.DO XCLK.LEN>125
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ERROR:XCLK Driver too big
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.FIN
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*--------------------------------------
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MAN
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SAVE usr/src/prodos.fx/prodos.s.xclk
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LOAD usr/src/prodos.fx/prodos.s
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ASM
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