mirror of https://github.com/A2osX/A2osX.git
324 lines
5.4 KiB
Plaintext
324 lines
5.4 KiB
Plaintext
NEW
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AUTO 3,1
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.LIST OFF
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.OP 65C02
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.OR $2000
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.TF sys/pm/pm.nsc
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*--------------------------------------
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.INB inc/macros.i
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.INB inc/io.i
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.INB inc/monitor.i
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.INB inc/mli.i
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*--------------------------------------
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NSC.IOBASE .EQ $C300
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*--------------------------------------
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TmpPtr1 .EQ $0
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TmpPtr2 .EQ $2
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offset .EQ $4
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*--------------------------------------
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NSC.Init >LDYAI NSC.MSG0
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jsr NSC.Print
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lda MACHID
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and #MACHID.CLK Clock already installed ?
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beq .1
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>LDYAI NSC.MSG1
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bra NSC.Print
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.1 jsr NSC.Detect
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bcc .2
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>LDYAI NSC.MSG2
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bra NSC.Print
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.2 jsr NSC.Install
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lda #MACHID.CLK
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tsb MACHID
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>LDYAI NSC.MSG3
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* jmp NSC.Print
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*--------------------------------------
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NSC.Print sty TmpPtr1
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sta TmpPtr1+1
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ldy #0
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.1 lda (TmpPtr1),y
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beq .8
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jsr COUT
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iny
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bne .1
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.8 jmp CROUT
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*--------------------------------------
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DS1216E.DATA1 .EQ $10
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DS1216E.DATA2 .EQ $18
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*--------------------------------------
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NSC.Detect php
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sei
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lda RDCXROM
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php
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sta SETCXROM
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sta NSC.IOBASE
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* lda $C00B Workaround for Ultrawarp bug
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ldx #8
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.1 ldy #8
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.2 lda NSC.IOBASE+4
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lsr
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ror DS1216E.DATA1-1,x
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dey
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bne .2
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dex
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bne .1
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sta NSC.IOBASE
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* lda $C00B Workaround for Ultrawarp bug
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lda NSC.IOBASE+4 Reset DS1216E comparison register with READ A2=1
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ldy #8 Read 8 bytes...
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.3 lda DS1216E.PATTERN-1,x
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phy
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ldy #8 ....of 8 bits
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.4 ldx #0
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lsr
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bcc .5
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inx
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.5 bit NSC.IOBASE,x Write Pattern bit in A0, with A2=0
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dey
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bne .4
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ply
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dey
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bne .3
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*--------------------------------------
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ldx #8
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.6 ldy #8
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.7 lda NSC.IOBASE+4
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lsr
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ror DS1216E.DATA2-1,x
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dey
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bne .7
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dex
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bne .6
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plp
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bmi .8
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sta CLRCXROM
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.8 plp
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*--------------------------------------
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ldx #8
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.81 lda DS1216E.DATA1-1,x
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cmp DS1216E.DATA2-1,x
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bne .9
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dex
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bne .81
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* sec from CMP
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rts
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.9 clc
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rts
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*--------------------------------------
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NSC.Install lda DATETIME+1
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sta TmpPtr1
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sec
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sbc #NSCDRV.B.START
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sta offset
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lda DATETIME+2
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sta TmpPtr1+1
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sbc /NSCDRV.B.START
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sta offset+1
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ldy #1
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ldx #0
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.1 lda NSCDRV.RELOC,x
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beq .2
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sta TmpPtr2
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inx
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lda NSCDRV.RELOC,x
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sta TmpPtr2+1
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lda (TmpPtr2)
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clc
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adc offset
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sta (TmpPtr2)
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lda (TmpPtr2),y
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adc offset+1
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sta (TmpPtr2),y
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inx
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bne .1
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.2 lda RRAMWRAMBNK1
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lda RRAMWRAMBNK1
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.3 ldy #NSCDRV.SIZE-1 always < 128
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.7 lda NSCDRV.B.START,y
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sta (TmpPtr1),y
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dey
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bpl .7
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lda RROMBNK1
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lda #$4C
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sta DATETIME
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rts
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*--------------------------------------
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NSCDRV.RELOC .DA NSCDRV.R1+1
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* .DA NSCDRV.R2+1
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* .DA NSCDRV.R3+1
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.DA NSCDRV.R4+1
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.DA NSCDRV.R5+1
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.DA NSCDRV.R6+1
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.DA NSCDRV.R7+1
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.DA NSCDRV.R8+1
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* .DA NSCDRV.R9+1
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.DA #0
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*--------------------------------------
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NSC.MSG0 .AZ -"NSC 'No-Slot-Clock'/DS1216E Driver For A2osX"
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NSC.MSG1 .AZ -"Clock Already Present!"
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NSC.MSG2 .AZ -"No DS1216E Detected!"
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NSC.MSG3 .AZ -"DS1216E Driver Successfully Installed."
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*--------------------------------------
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* Driver For DS1216E
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*--------------------------------------
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DS1216E.DATA .EQ $200 Reverted YY MM DD Day HH mm SS CS
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*--------------------------------------
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NSCDRV.B.START .EQ *
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NSCDRV php
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sei
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lda RDCXROM
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php
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sta SETCXROM
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sta NSC.IOBASE
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* lda $C00B Workaround for Ultrawarp bug
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lda NSC.IOBASE+4 Reset DS1216E comparison register with READ A2=1
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ldy #8 Read 8 bytes...
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NSCDRV.R1 lda DS1216E.PATTERN-1,y
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phy
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ldy #8 ....of 8 bits
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NSCDRV.2 ldx #0
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lsr
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bcc NSCDRV.3
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inx
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NSCDRV.3 bit NSC.IOBASE,x Write Pattern bit in A0, with A2=0
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dey
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bne NSCDRV.2
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ply
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dey
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bne NSCDRV.R1
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ldx #8
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NSCDRV.4 ldy #8
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NSCDRV.5 pha
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lda NSC.IOBASE+4 Read Byte...
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lsr
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pla
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ror
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dey
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bne NSCDRV.5
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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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NSCDRV.6 adc #$0A
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dey
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bpl NSCDRV.6
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NSCDRV.R4 sta DS1216E.DATA-1,x
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dex
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bne NSCDRV.4
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pha DS1216E.DATA
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NSCDRV.R7 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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NSCDRV.R8 ora DS1216E.DATA+2 Get DD
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sta DATELO
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*NSCDRV.R9 lda DS1216E.DATA Get YY
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pla
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rol
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sta DATELO+1
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NSCDRV.R6 lda DS1216E.DATA+5 Get mm
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sta TIMELO
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NSCDRV.R5 lda DS1216E.DATA+4 Get HH
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sta TIMELO+1
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plp
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bmi .8
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sta CLRCXROM
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.8 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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*--------------------------------------
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.LIST ON
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NSCDRV.SIZE .EQ *-NSCDRV.B.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 NSCDRV.SIZE>125
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ERROR:NSCDRV.SIZE too big
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.FIN
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*--------------------------------------
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MAN
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SAVE usr/src/sys/pm.nsc.s
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ASM
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