mirror of
https://github.com/deater/dos33fsprogs.git
synced 2025-01-01 05:31:52 +00:00
56 lines
700 B
ArmAsm
56 lines
700 B
ArmAsm
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;====================
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; hgr input
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;====================
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; TODO: save to string
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; TODO: arbitrary Y location
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; TODO: when backspacing, erase old char not XOR
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hgr_input:
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ldx #0
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ldy #184
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lda #'>'
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jsr hgr_put_char
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ldx #1
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stx INPUT_X
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hgr_input_loop:
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lda KEYPRESS
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bpl hgr_input_loop
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bit KEYRESET
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and #$7f ; trim off top?
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cmp #13
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beq done_hgr_input
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cmp #$7f
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beq hgr_input_backspace
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cmp #8
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beq hgr_input_backspace
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ldy #184
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ldx INPUT_X
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jsr hgr_put_char
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inc INPUT_X
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jmp hgr_input_loop
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hgr_input_backspace:
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ldx INPUT_X
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cpx #1 ; don't backspace too far
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beq hgr_input_loop
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lda #' '
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ldy #184
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jsr hgr_put_char
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dec INPUT_X
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jmp hgr_input_loop
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done_hgr_input:
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rts
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