mirror of
https://github.com/A2osX/A2osX.git
synced 2024-11-19 12:31:56 +00:00
92 lines
1.5 KiB
Plaintext
92 lines
1.5 KiB
Plaintext
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NEW
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AUTO 3,1
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*--------------------------------------
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* Driver For DS1216E
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*--------------------------------------
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NCLK.START php
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sei
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sta $CFFF Make cards release $C8xx space
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sta $C300
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lda $C304 Reset DS1216E comparison register with READ A2=1
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ldy #7 Read 8 bytes...
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.1 lda DS1216E.PATTERN,y
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phy
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ldy #8 ....of 8 bits
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.2 ldx #0
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lsr
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bcc .3
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inx
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.3 bit $C300,x Write Pattern bit in A0, with A2=0
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dey
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bne .2
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ply
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dey
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bpl .1
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ldx #7
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.4 ldy #8
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.5 lda $C304 Read Byte...
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lsr
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ror DS1216E.DATA,x
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dey
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bne .5
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lda DS1216E.DATA,x
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pha
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lsr
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lsr
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lsr
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lsr
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tay
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pla
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and #$0F
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clc
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.HS 2C Bit Absolute to skip adc #$0A
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.6 adc #$0A
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dey
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bpl .6
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sta DS1216E.DATA,x
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dex
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bpl .4
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lda DS1216E.DATA+4 Get HH
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sta TIMELO+1
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lda DS1216E.DATA+5 Get mm
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sta TIMELO
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lda DS1216E.DATA+1 Get MM
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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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ora DS1216E.DATA+2 Get DD
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sta DATELO
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lda DS1216E.DATA Get YY
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rol
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sta DATELO+1
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plp
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rts
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*--------------------------------------
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DS1216E.PATTERN .HS 5CA33AC55CA33AC5 Reverted 7->0
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DS1216E.DATA .BS 8 Reverted YY MM DD Day HH mm SS CS
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*--------------------------------------
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NCLK.LEN .EQ *-NCLK.START
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*--------------------------------------
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MAN
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SAVE USR/SRC/PRODOS.FX/PRODOS.S.NCLK
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LOAD USR/SRC/PRODOS.FX/PRODOS.S
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ASM
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