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50 lines
1015 B
ArmAsm
50 lines
1015 B
ArmAsm
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.include "atari5200.inc"
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.export setcursor
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.import cursor ; from conio/_cursor.s
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.proc setcursor
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rts
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.if 0
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ldy #0
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lda ROWCRS_5200
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jsr mul20
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clc
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; adc SAVMSC ; add start of screen memory
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; sta OLDADR
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txa
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; adc SAVMSC+1
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; sta OLDADR+1
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lda COLCRS_5200
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; adc OLDADR
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; sta OLDADR
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bcc nc
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; inc OLDADR+1
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nc:;;; lda (OLDADR),y
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; sta OLDCHR
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ldx cursor ; current cursor setting as requested by the user
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beq off
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ldx #0
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beq cont
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off: inx
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cont:;;; stx CRSINH ; update system variable
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beq turnon
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and #$7f ; clear high bit / inverse flag
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finish: ;;;sta (OLDADR),y ; update on-screen display
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rts
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turnon: ora #$80 ; set high bit / inverse flag
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bne finish
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.endif
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.endproc
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