291 lines
4.4 KiB
ArmAsm
291 lines
4.4 KiB
ArmAsm
;========================================================
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; display lyrics electric duet
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;========================================================
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display_lyrics_ed:
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;========================
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; Check if new lyric ready
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;========================
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lda FRAME_COUNT ; get current frame count
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ldy #0
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cmp (LYRICSL),Y ; compare to next-trigger
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bne all_done_lyrics_ed ; not same, so skip
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; adjust pointer 16-bit
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inc LYRICSL
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bne lc_sb2_ed
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inc LYRICSH
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lc_sb2_ed:
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;==================================
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; Print lyric
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;==================================
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handle_lyrics_ed:
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ldy #0
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lda (LYRICSL),Y ; load value
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handle_lyrics_loop_ed:
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cmp #11 ; check if in range 1-10
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bcs lyric_home_ed ; if not, skip ahead
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go_draw_ascii_ed:
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jsr draw_ascii_art ; draw proper ascii art
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jmp lyric_continue_ed ; and continue
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lyric_home_ed:
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cmp #12 ; check if form feed char
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bne lyric_char_ed ; if not skip ahead
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jsr HOME ; call HOME
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jmp lyric_continue_ed ; continue
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lyric_char_ed:
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ldy FORTYCOL ; if 40 column, uppercase it
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beq just_output_already_ed
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; Uppercase it
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cmp #'a'+$80
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bcc just_output_already_ed
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cmp #'z'+$80
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bcs just_output_already_ed
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and #$DF
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just_output_already_ed:
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jsr COUT1 ; output the character
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lyric_continue_ed:
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; adjust pointer 16-bit
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inc LYRICSL
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bne lc_sb_ed
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inc LYRICSH
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lc_sb_ed:
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ldy #0
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lda (LYRICSL),Y ; load value
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bne handle_lyrics_loop_ed
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; adjust pointer 16-bit
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inc LYRICSL
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bne lc_sb_ed2
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inc LYRICSH
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lc_sb_ed2:
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; skip MB offset
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; adjust pointer 16-bit
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inc LYRICSL
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bne lc_sb_ed8
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inc LYRICSH
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lc_sb_ed8:
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all_done_lyrics_ed:
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rts
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;========================================================
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; display lyrics mockingboard
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;========================================================
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display_lyrics:
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;=====================
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; See if lyrics already printing
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;=====================
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ldy #0
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lda LYRICS_ACTIVE ; see if lyric is ready
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bne handle_lyrics ; if so handle it
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;========================
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; Check if new lyric ready
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;========================
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lda FRAME_COUNT ; get current frame count
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cmp (LYRICSL),Y ; compare to next-trigger
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bne all_done_lyrics ; not same, so skip
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lda #1 ; matches, set lyrics active
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sta LYRICS_ACTIVE
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; adjust pointer 16-bit
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inc LYRICSL
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bne lc_sb2
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inc LYRICSH
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lc_sb2:
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; skip ED data
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; adjust pointer 16-bit
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inc LYRICSL
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bne lc_sb5
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inc LYRICSH
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lc_sb5:
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;==================================
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; Lyric active, print current char
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;==================================
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handle_lyrics:
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lda (LYRICSL),Y ; load value
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beq done_lyric ; if 0, done lyric
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cmp #11 ; check if in range 1-10
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bcs lyric_home ; if not, skip ahead
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go_draw_ascii:
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jsr draw_ascii_art ; draw proper ascii art
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jmp lyric_continue ; and continue
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lyric_home:
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cmp #12 ; check if form feed char
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bne lyric_char ; if not skip ahead
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jsr HOME ; call HOME
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jmp lyric_continue ; continue
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lyric_char:
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; clear cursor
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cursor_clear:
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pha
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lda #' '+$80
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ldy FORTYCOL
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beq eightyclear
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fortyclear:
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ldy CH
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sta (BASL),Y
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jmp cursor_clear_done
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eightyclear:
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jsr COUT
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lda #$8
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jsr COUT
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cursor_clear_done:
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pla
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ldy FORTYCOL ; if 40col, convert to UPPERCASE
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beq just_output_already
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cmp #'a'+$80
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bcc just_output_already
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cmp #'z'+$80
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bcs just_output_already
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and #$DF
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just_output_already:
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jsr COUT1 ; output the character
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lyric_continue:
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; adjust pointer 16-bit
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inc LYRICSL
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bne lc_sb
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inc LYRICSH
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lc_sb:
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jmp all_done_lyrics
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done_lyric:
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lda #0
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sta LYRICS_ACTIVE
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jmp lyric_continue
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all_done_lyrics:
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lda FORTYCOL
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beq blink_cursor80
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; Blink Cursor
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blink_cursor40:
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inc CURSOR
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lda CURSOR
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and #$10
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beq cursor_space
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cursor_underscore:
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lda #'_'+$80
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jmp cursor_done
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cursor_space:
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lda #' '+$80
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cursor_done:
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ldy CH
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sta (BASL),Y
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rts
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blink_cursor80:
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inc CURSOR
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lda CURSOR
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and #$10
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beq cursor_space80
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cursor_underscore80:
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lda #'_'+$80
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jsr COUT
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lda #$8 ; BS (backspace)
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jsr COUT
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rts
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cursor_space80:
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lda #' '+$80
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jsr COUT
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lda #$8 ; BS (backspace)
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jsr COUT
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cursor_done80:
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rts
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;============================
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; Setup Word Bounds
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;============================
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word_bounds:
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lda FORTYCOL
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bne fortycol_word_bounds
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eightycol_word_bounds:
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; on 80 column, words go from 2,1 to 35,21
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lda #2
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sta WNDLFT
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lda #35
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sta WNDWDTH
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lda #1
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sta WNDTOP
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lda #21
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sta WNDBTM
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rts
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fortycol_word_bounds:
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; on 40 column, words go from 1,0 to 35,4
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lda #1
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sta WNDLFT
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lda #35
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sta WNDWDTH
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lda #0
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sta WNDTOP
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lda #4
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sta WNDBTM
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rts
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