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pt3: have player calculate total time

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it takes a while
This commit is contained in:
Vince Weaver 2019-05-14 14:25:13 -04:00
parent c4f9f1b6e3
commit 98b3bc9902
2 changed files with 155 additions and 28 deletions
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2
pt3_player/interrupt_handler.s
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@ -22,7 +22,7 @@ interrupt_handler:
inc $0404 ; debug (flashes char onscreen)
; inc $0404 ; debug (flashes char onscreen)
bit $C404 ; clear 6522 interrupt by reading T1C-L ; 4

181
pt3_player/pt3_player.s
View File

@ -8,7 +8,6 @@ UNPACK_BUFFER EQU $6000 ; $6000 - $9800, 14k, $3800
NUM_FILES EQU 15
;=============================
; Setup
;=============================
@ -32,11 +31,7 @@ pt3_setup:
lda #0
sta DRAW_PAGE
; sta CH
; sta CV
sta DONE_PLAYING
; sta MB_CHUNK_OFFSET
; sta DECODE_ERROR
sta WHICH_FILE
; lda #$ff
@ -119,27 +114,7 @@ mockingboard_found:
; Draw title screen
;============================
; jsr set_gr_page0 ; set page 0
; lda #$4 ; draw page 1
; sta DRAW_PAGE
; jsr clear_screens ; clear both screens
; lda #<chip_title ; point to title data
; sta GBASL
; lda #>chip_title
; sta GBASH
; bit PAGE1
; Load image ; load the image
; lda #<$800
; sta BASL
; lda #>$800
; sta BASH
; jsr load_rle_gr
;==================
; load first song
@ -221,8 +196,8 @@ new_song:
; Init Variables
;=========================
; lda #$0
; sta FRAME_COUNT
lda #$0
sta FRAME_COUNT
; sta A_VOLUME
; sta B_VOLUME
; sta C_VOLUME
@ -336,6 +311,33 @@ done_name_loop:
jsr print_header_info
; Print clock
lda #'0'+$80
sta $7D0+13
sta $7D0+13+2
sta $7D0+13+3
sta $BD0+13
sta $BD0+13+2
sta $BD0+13+3
sta $7D0+13+7
sta $7D0+13+9
sta $7D0+13+10
sta $BD0+13+7
sta $BD0+13+9
sta $BD0+13+10
lda #':'+$80
sta $7D0+13+1
sta $BD0+13+1
sta $7D0+13+8
sta $BD0+13+8
lda #'/'+$80
sta $7D0+13+5
sta $BD0+13+5
; lda #23 ; VTAB 23: HTAB from file
; jsr print_header_info
@ -359,6 +361,122 @@ done_name_loop:
jsr pt3_init_song
;=================================
; BLARCH
;=================================
lda #$0
sta current_line
sta current_subframe
sta current_pattern
frame_count_loop:
lda current_line
bne fc_pattern_good
lda current_subframe
bne fc_pattern_good
; load a new pattern in
jsr pt3_set_pattern
lda DONE_PLAYING
beq fc_pattern_good
jmp done_counting
fc_pattern_good:
lda current_subframe
bne fc_line_good
jsr pt3_decode_line
lda pt3_pattern_done
bne fc_line_good
inc current_pattern ; increment pattern
lda #0
sta current_line
sta current_subframe
jmp frame_count_loop
fc_line_good:
inc current_subframe ; subframe++
lda current_subframe
cmp pt3_speed ; if we hit pt3_speed, move to next
bne fc_do_frame
fc_next_line:
lda #0 ; reset subframe to 0
sta current_subframe
inc current_line ; and increment line
lda current_line
cmp #64 ; always end at 64.
bne fc_do_frame ; is this always needed?
fc_next_pattern:
lda #0 ; reset line to 0
sta current_line
inc current_pattern ; increment pattern
fc_do_frame:
inc time_frame
lda time_frame
cmp #50
bne fc_bayern
lda #0
sta time_frame
; see if overflow low s
lda $BD0+13+10
cmp #'9'+$80
bne inc_low_s
; see if overflow high s
lda $BD0+13+9
cmp #'5'+$80
bne inc_high_s
inc $7D0+13+7
inc $BD0+13+7
lda #'0'+$80
sta $7D0+13+9
sta $BD0+13+9
jmp clear_low_s
inc_high_s:
inc $7D0+13+9
inc $BD0+13+9
clear_low_s:
lda #'0'+$80
sta $7D0+13+10
sta $BD0+13+10
jmp inc_done
inc_low_s:
inc $7D0+13+10
inc $BD0+13+10
inc_done:
fc_bayern:
jmp frame_count_loop
done_counting:
; re-init, as we've run through it
lda #0
sta DONE_PLAYING
sta current_pattern
jsr pt3_init_song
rts
@ -444,6 +562,15 @@ decrement_file:
done_decrement:
rts
;=========
; vars
;=========
time_frame: .byte $0
;==========
; filenames
;==========