show ROM size in status bar

CHANGES.txt

@@ -8,8 +8,8 @@
 * pentlyas.py: output lists each song's total size in comments
 * Add "Isometry" song demonstrating attack track more thoroughly
 * makefile: change score filename
-* NES shell: move credit line to status bar
-* NES shell: profiler shows current and peak CPU usage
+* NES shell: move copyright notice to status bar
+* NES shell: status shows ROM size and current and peak CPU usage
 * NES/NSF executables no longer in Git; will be in releases instead
 
 0.05wip7 (2017-09)

src/main.s

@@ -28,6 +28,11 @@
 .import getTVSystem
 .importzp NUM_SONGS
 
+; Size diagnostics
+.import periodTableHi, periodTableLo
+PERIOD_SIZE = (periodTableHi - periodTableLo) * 2
+PENTLY_SIZE = PENTLYMUSIC_SIZE + PENTLYSOUND_SIZE + PERIOD_SIZE
+
 .segment "ZEROPAGE"
 nmis:          .res 1
 oam_used:      .res 1
@@ -47,6 +52,7 @@ STATUS_BAR_TOP = 24
 STATUS_BAR_ADDR = $2000 + 32 * STATUS_BAR_TOP
 BEAT_POS_ADDR = STATUS_BAR_ADDR + 32 * 1 + 2
 CYCLES_ADDR = STATUS_BAR_ADDR + 32 * 1 + 25
+ROM_SIZE_ADDR = STATUS_BAR_ADDR + 32 * 2 + 2
 WORD_PEAK_ADDR = STATUS_BAR_ADDR + 32 * 2 + 21
 PEAK_ADDR = WORD_PEAK_ADDR + 4
 
@@ -126,20 +132,6 @@ PEAK_ADDR = WORD_PEAK_ADDR + 4
   sta cyclespeaklo
 
   ; Present one frame with only sprite 0 to prime the profiler
-
-  lda #>WORD_PEAK_ADDR
-  sta PPUADDR
-  lda #<WORD_PEAK_ADDR
-  sta PPUADDR
-  lda #'P'
-  sta PPUDATA
-  lda #'e'
-  sta PPUDATA
-  lda #'a'
-  sta PPUDATA
-  lda #'k'
-  sta PPUDATA
-
   lda #4
   sta oam_used
 
@@ -274,6 +266,54 @@ forever:
   jmp forever
 .endproc
 
+
+.proc puts_multiline_ay
+src = $00
+dst = $02
+  sta src+1
+  sty src+0
+  lineloop:
+    ldy dst+1
+    sty PPUADDR
+    ldy dst+0
+    sty PPUADDR
+    ldy #0
+    charloop:
+      lda (src),y
+      beq done
+      cmp #$0A
+      beq is_newline
+      sta PPUDATA
+      iny
+      bne charloop
+    is_newline:
+
+    ; Add Y (length before newline) plus 1 to text pointer
+    ;sec  ; CMP already set carry
+    tya
+    adc src
+    sta src
+    lda src+1
+    adc #0
+    sta src+1
+    lda dst
+    adc #32
+    sta dst
+    lda dst+1
+    adc #0
+    sta dst+1
+
+    ; crop to the status bar top
+    ; (things below it are limited to 1 line tall)
+    lda dst+0
+    cmp #<STATUS_BAR_ADDR
+    lda dst+1
+    sbc #>STATUS_BAR_ADDR
+    bcc lineloop
+  done:
+  rts
+.endproc
+
 .proc display_todo
   lda #VBLANK_NMI
   ldx #$00
@@ -300,47 +340,17 @@ dst = $02
   sta dst+0
   lda #>TRACKNAMES_ADDR
   sta dst+1
-  lda #<tracknames_txt
-  sta src+0
+  ldy #<tracknames_txt
   lda #>tracknames_txt
-  sta src+1
-todo_rowloop:
-  ldy dst+1
-  sty PPUADDR
-  ldy dst+0
-  sty PPUADDR
-  ldy #0
-todo_charloop:
-  lda (src),y
-  beq todo_done
-  cmp #$0A
-  beq is_newline
-  sta PPUDATA
-  iny
-  bne todo_charloop
-is_newline:
+  jsr puts_multiline_ay
 
-  sec
-  tya
-  adc src
-  sta src
-  lda src+1
-  adc #0
-  sta src+1
-  lda dst
-  adc #32
-  sta dst
-  lda dst+1
-  adc #0
+  lda #<ROM_SIZE_ADDR
+  sta dst+0
+  lda #>ROM_SIZE_ADDR
   sta dst+1
-
-  ; crop to the status bar top
-  lda dst+0
-  cmp #<STATUS_BAR_ADDR
-  lda dst+1
-  sbc #>STATUS_BAR_ADDR
-  bcc todo_rowloop
-todo_done:
+  ldy #<bytes_txt
+  lda #>bytes_txt
+  jsr puts_multiline_ay
 
   ; Draw top of status bar
   lda #>STATUS_BAR_ADDR
@@ -410,6 +420,15 @@ tracknames_txt:
   .incbin "tracknames.txt"
   .byt 0
 
+bytes_txt:
+  .byt "ROM:"
+  .byt '0'|<((PENTLY_SIZE / 1000) .MOD 10)
+  .byt '0'|<((PENTLY_SIZE / 100) .MOD 10)
+  .byt '0'|<((PENTLY_SIZE / 10) .MOD 10)
+  .byt '0'|<((PENTLY_SIZE / 1) .MOD 10)
+  .byt " bytes     Peak",0
+
+
 main_palette:
   .byt $0F,$00,$10,$30, $0F,$00,$10,$30, $0F,$00,$10,$30, $0F,$00,$10,$30
   .byt $0F,$00,$10,$30, $0F,$00,$10,$30, $0F,$00,$10,$30, $0F,$00,$10,$30

src/pently.inc

@@ -134,3 +134,6 @@ PENTLY_USE_BPMMATH = 1
 .globalzp pently_tempoCounterLo, pently_tempoCounterHi
 
 .global pently_fpmLo, pently_fpmHi
+
+; Size (for debugging) ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+.global PENTLYSOUND_SIZE, PENTLYMUSIC_SIZE

src/pentlymusic.s

@@ -128,6 +128,8 @@ pentlymusicbase: .res pentlymusicbase_size
 .endif
 
 .segment PENTLY_RODATA
+pentlymusic_rodata_start = *
+
 FRAMES_PER_MINUTE_PAL = 3000
 FRAMES_PER_MINUTE_NTSC = 3606
 pently_fpmLo:
@@ -154,6 +156,8 @@ porta1x_rates_hi:
 .endif
 
 .segment PENTLY_CODE
+pentlymusic_code_start = *
+
 .proc pently_start_music
   asl a
   tax
@@ -1321,4 +1325,11 @@ is_decrease:
   bcc at_target
 .endproc
 
-.endif
+.endif
+
+
+.segment PENTLY_RODATA
+pentlymusic_rodata_size = * - pentlymusic_rodata_start
+.segment PENTLY_CODE
+pentlymusic_code_size = * - pentlymusic_code_start
+PENTLYMUSIC_SIZE = pentlymusic_rodata_size + pentlymusic_code_size

src/pentlysound.s

@@ -55,6 +55,7 @@ ch_lastfreqhi = pentlyBSS + 2
 sfx_remainlen = pentlyBSS + 3
 
 .segment PENTLY_CODE
+pentlysound_code_start = *
 
 ;;
 ; Initializes all sound channels.
@@ -294,3 +295,4 @@ no_change_to_hi_period:
   rts
 .endproc
 
+PENTLYSOUND_SIZE = * - pentlysound_code_start