44 lines
657 B
ArmAsm
44 lines
657 B
ArmAsm
// #LAYOUT# STD * #TAKE
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// #LAYOUT# X16 * #IGNORE
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// #LAYOUT# * KERNAL_0 #TAKE
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// #LAYOUT# * * #IGNORE
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//
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// Tabulation keys handling within CHROUT
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//
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#if CONFIG_EDIT_TABULATORS
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chrout_screen_TAB_FW:
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jsr screen_get_clipped_PNTR
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tya
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ora #%00000111
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tay
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iny
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cpy #40
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bcc !+
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ldy #39
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!:
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sty PNTR
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jmp chrout_screen_calc_lptr_done
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chrout_screen_TAB_BW:
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jsr screen_get_clipped_PNTR
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beq !+ // column 0, recalculating pointers is not necessary, but this is a rare case nevertheless
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dey
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tya
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and #%11111000
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sta PNTR
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!:
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jmp chrout_screen_calc_lptr_done
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#endif // CONFIG_EDIT_TABULATORS
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