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https://github.com/a2stuff/prodos-drivers.git
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86 lines
1.5 KiB
ArmAsm
86 lines
1.5 KiB
ArmAsm
;;; Query ProDOS and print the current date/time
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;;; (No dependency on Cricket clock)
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;;; Output is: MM/DD/YY HH:MM
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.setcpu "6502"
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.org $2000
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.include "apple2.inc"
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.include "common.inc"
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start:
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PRODOS_CALL MLI_GET_TIME, 0
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;; Date
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lda DATELO+1 ; month
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ror a
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pha
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lda DATELO
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pha
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rol a
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rol a
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rol a
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rol a
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and #%00001111
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jsr cout_number
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lda #HI('/') ; /
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jsr COUT
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pla ; day
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and #%00011111
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jsr cout_number
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lda #HI('/') ; /
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jsr COUT
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pla ; year
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jsr cout_number
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lda #HI(' ')
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jsr COUT
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jsr COUT
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;; Time
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lda TIMELO+1 ; hour
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jsr cout_number
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lda #HI(':') ; ':'
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jsr COUT
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lda TIMELO ; minute
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jsr cout_number
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jsr CROUT
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rts
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pm_flag:
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.byte 0
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;;; ------------------------------------------------------------
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.proc cout_number
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ldx #HI('0')
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cmp #10 ; >= 10?
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bcc tens
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;; divide by 10, dividend(+'0') in x remainder in a
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: sbc #10
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inx
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cmp #10
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bcs :-
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tens: pha
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txa
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jsr COUT
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units: pla
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ora #HI('0')
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jsr COUT
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rts
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.endproc
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