|
|
这是个 nesasm 3.2 入土教程, 感兴趣的可以研究下 y, `" s; ?" Q9 j) V5 i' f
, a% h! E9 |$ r+ }
以下是主框架代码:: X `5 w1 ]5 l+ c0 C
- ;======================================================================1 V- C. ~9 U. B( q* x- e6 P4 U5 f
- ;文件头
3 e/ a+ S# z# f! ^3 s0 T* S$ H0 U! Y - NES_16KB_PRG_SIZE = 8 ;16KB PRG大小数量
/ u$ H& c6 X# e - NES_8KB_CHR_SIZE = 1 ;8KB CHR大小数量9 C8 M0 { l8 }& K' P+ l f
- BANK_DATA_MASK = NES_16KB_PRG_SIZE * 2 - 1 ;bank号掩码; {" p5 V7 t1 y
- ;======================================================================( R S+ L) z4 x, H5 p& g C
- PRG_DATA_BANK_C000 = NES_16KB_PRG_SIZE * 2 - 2
( C$ u& }$ I- s. T - PRG_DATA_BANK_E000 = NES_16KB_PRG_SIZE * 2 - 1
" H* s. M& c9 i2 Z, D+ n+ S2 j - ;======================================================================
8 x! r( N1 s1 t0 h+ E' \ - RESET_BANK = NES_16KB_PRG_SIZE * 2 - 1
: w: v. O$ b3 x; u' i' C2 ^5 D - RESET_ADDR = $E000 ;主程序起始地址
% k3 C3 y& Q3 s6 t- _* m - ;======================================================================
m2 C! ~7 ^* p0 W+ ] - .INESPRG NES_16KB_PRG_SIZE ;16KB PRG 数量, $01-$EF8(1-3832),即16-61,312 KB
6 B! I4 E, v5 O/ S8 c l% j - .INESCHR NES_8KB_CHR_SIZE ;8KB CHR 数量,$01-$EF8(1-3832),即0-30,656 KB6 w6 q. V2 A- ?7 K$ v
- .INESMAP 4 ;Mapper号 (0-4095)
" F' p5 s# l6 E - .INESSUBMAP 0 ;子Mapper号 (0-15)! r9 D- y1 V& R5 v( o/ e7 e. i* y
- .INESMIR 0 ;命名表镜像 (0: 水平 1: 垂直 2: 四屏)
+ A9 ~; i9 g0 q0 i" A! ^3 j - .INESBAT 0 ;指定是否存在电池备份 (0: 不存在 1: 存在); T0 i' v( `" y$ g
- .INESPRGRAM 0 ;指定 PRG RAM 大小 (大小 = 64字节 << 计数)+ Q& \% B) F- S f: h/ f4 x
- .INESPRGNVRAM 0 ;指定 PRG NVRAM 大小(大小 = 64字节 << 计数) t6 L2 r5 q4 j0 k7 {! W3 P, d* V
- .INESCHRRAM 0 ;指定 CHR RAM 大小(大小 = 64字节 << 计数)" E8 d9 U+ ^- U; n2 B- z+ H
- .INESCHRNVRAM 0 ;指定 CHR NVRAM 大小(大小 = 64字节 << 计数)% a, y0 x$ t+ g! E/ L2 D
- .INESTIM 0 ;指定时序 (0: NTSC, 1: PAL, 2: 多区域, 3: Dendy)
/ A2 R# p4 f" H( G1 I4 D5 Q7 D - ;======================================================================
. T, D- I) A: O - .INCLUDE "fc_demo_config.asm" ;全局配置
% \& h( x9 P9 z - .INCLUDE "fc_demo_constant.asm" ;NES常量: e1 ?" H: K- G. a% {: h
- ;======================================================================& I8 d6 P% y1 n! Z; P3 a$ g1 q
- ;音乐配置% X7 R: n9 I: a$ i
- .IF 0 = MUSIC_THEME - G4 ~! {" q6 y7 `5 \- Q" ?
- .INCLUDE "data/music/Gremlin 2/config.asm"
: Y7 e' x0 a0 Z4 C - .ENDIF
* W0 q0 B s+ j - - n) Q6 R! s9 d7 R* s- d8 m. H8 V C
- .IF 1 = MUSIC_THEME$ m" X( f& x1 l6 K3 F
- .INCLUDE "data/music/Raf World/config.asm" m0 a9 N9 P {9 X, b: S+ Y* p! }
- .ENDIF# r) j3 Q/ X( m( W
- , G' L0 X" t9 f) U5 E
- .IF 2 = MUSIC_THEME
, E3 P' S ?+ i! M8 v! x - .INCLUDE "data/music/Ninja Gaiden 3/config.asm"* J" }: x. N, W4 N2 c
- .ENDIF( }3 x7 s) n/ }* w- H- t' J
0 D- p$ h" Z7 E4 [* z7 p7 @- ;======================================================================9 p/ q( _" j G6 r
- ;引用CHR图像数据3 C2 b$ v% i* ~* A4 g: A
- .BANK NES_16KB_PRG_SIZE * 28 i, o! T: O% s( x; ?9 G
- .ORG $0000
# z& _. ^# Q$ P - .INCBIN "data/bkg.chr"
5 D* F+ F/ C/ N: D# V# I$ q8 E+ z3 l - .INCBIN "data/sp.chr"! {+ `; D& V2 [" u& O1 M7 c% r0 t
- $ ~$ m; u; _8 J9 a2 ?9 I' w
- ;======================================================================
6 p* o) T6 d5 `) Q2 ?5 L - .BANK PRG_DATA_BANK_E000 & BANK_DATA_MASK;设置程序所在Bank
L: W% _7 o0 M, G( z/ K+ t& ] - .ORG RESET_ADDR: R; u0 N, ]& Q: d( F* H1 a5 J
- ;======================================================================
+ S. |& {, {# b- f4 Y4 Z - ;引用其他源文件
! k" k9 J4 H+ A1 D3 u - .INCLUDE "fc_demo_ppu.asm" ;PPU处理) u, i1 f4 p; e# a7 a q
- .INCLUDE "fc_demo_joysitck.asm" ;手柄处理" G% l1 R: n5 y7 n7 o! B- |& B
- .INCLUDE "fc_demo_static_text.asm" ;静态文本处理0 @6 m2 M$ _7 ^/ i* b: }
- ;======================================================================
5 v8 K, ^% n* A2 i/ i6 l. b
. g2 J$ o/ y c# V# b- }8 `- ;======================================================================6 j% m4 Z& T( l7 \' E
- ;等待VBlank到来
! a% X" G7 N! d2 S9 | - Wait_For_VBlank2 f4 o" b( W# @4 S6 X5 j
- LDA PPU_STATUS5 q8 y. H. h- I
- BPL Wait_For_VBlank0 o5 P U8 K+ ?7 E
- RTS
- h3 c- M$ s3 Y: K# \
1 ^& M6 I4 B m- ;======================================================================
2 W! g; [3 P5 `& c# V - ;调色板初始化" _) P3 D7 o1 }' ^# C
- Palette_Init
|2 ~+ o- _, v" O0 ^/ y - LDA #$3F
( {! L: d& r. _( h/ W - STA PPU_ADDRESS
" g- R/ d) n4 M3 F - LDA #$00
' O% ^" ^: P2 T, e+ O# Q) a% a - STA PPU_ADDRESS
* x( X: q) f8 ^$ S - LDX #$00 s. d& B/ i; K9 b1 J2 d
- LDY #$20- e+ R) g# f( n4 p6 r( }
- .Write_Data/ F! W/ L7 k }, G9 G
- LDA Palette_Data,X& g( F, m0 O6 B6 r8 @' w
- STA FC_PPU_Pal_Addr,X
! O% P7 `, v( G, m - INX' S' G) f: g Y$ Y8 ^) G
- DEY
1 I8 u, F# J5 Q/ z+ H7 a& q' S, U' A - BNE .Write_Data" t- z2 U5 W" y6 g
- .End9 H5 R& d, j' L- D" ~8 P
- RTS
5 l. I2 {; _' c - & H2 s1 s, W; t( p7 k4 v
- ;----------------------------------------
' A) A( C L: H2 G( Q - ;调色板数据
}5 y; I; N1 P/ w1 W' d: ^( U9 @ - Palette_Data0 G3 `: G( k' p
- .HEX 0F 20 32 02 0F 20 32 0F 0F 20 32 26 0F 1B 0F 1B1 G+ e" k0 a9 b4 ]+ l( h1 F
- .HEX 0F 21 27 22 0F 24 24 24 0F 21 21 21 0F 22 22 22+ ^: b0 D$ m* S: ~9 I( t
- ' `# y. z0 w4 }/ z+ v# E1 E2 j
- ;======================================================================4 f7 s9 ~# p) e) ]$ v4 j
- ;命名表清空' p4 Y% @0 v( n4 q2 s
- Nametable_Clear
' v4 n( P1 h$ Q( K - LDA #$20
- _% M/ A* i4 `# f. O' R6 \ - STA PPU_ADDRESS" U' j; J5 T- T$ J0 h
- LDA #$00' P) G+ n: \5 q# m
- STA PPU_ADDRESS
2 ?$ {" m0 J7 \6 r- v; X! Z g - LDA #$00
! Y& q! f) m/ h - LDX #$00
- V6 B4 A8 F+ |4 Z+ X0 j# h4 S - LDY #$087 h& i0 j5 `* ?' Z
- .Write_Data7 x" W3 @* U( g1 G* R% q
- STA PPU_DATA
* a( K. L( L# I4 J' {6 e - INX) ?) U4 s. |% ~* ^8 |7 b
- BNE .Write_Data
# W# p) D7 |4 W2 {4 S) | - DEY1 s8 `# A2 ~" h3 W+ V# ^
- BNE .Write_Data
& j' ^2 K3 y+ n* S - .End+ x% q# r: k* c e; t& N& c
- RTS2 Y |+ _# X: ?8 j$ x
- % L$ o) q/ j3 p6 M, Y. l* g0 M
- ;======================================================================) Z& u6 f1 P( C9 P6 [6 F, C. j' Q; u9 g
- ;音乐曲目切换
# R7 B: \# `: d# _* v" G/ \( U - Music_Select_Process3 U/ O" Y* y3 {3 y; b+ Q& u; U1 O
6 b, B, Y9 h+ p0 m0 M, l- .Pre_Music;上一曲' Z4 v* z0 a# N- E) _$ o
- LDA FC_Gamepad_Once4 m A! h# ~0 @* p7 o8 M1 ~/ O, h3 z+ q
- CMP #JOY_KEY_LEFT
5 O2 A: k2 E; @% d" } - BNE .Next_Music
k! Q1 H! T% l& T2 \ - JSR Music_Play_Pre
* \, V3 z8 O3 K( c, J1 @ - .Next_Music;下一曲
) i6 V. n( Y2 B+ j3 k( H* N - LDA FC_Gamepad_Once
" R" o1 M7 P+ r0 |, [: _ - CMP #JOY_KEY_RIGHT
+ T: f% P# b& i; n' L - BNE .Next_10_Music
: x/ {9 e9 ^2 \7 a# j6 C - JSR Music_Play_Next
# f; i+ S$ K3 U! _- F/ { - .Next_10_Music;上10曲
+ @" } M, b3 ~# t7 f& R% w1 s7 o% H - LDA FC_Gamepad_Once
" K: `- u; C z& p+ g - CMP #JOY_KEY_UP
. Y# A- S* `4 \7 X - BNE .Pre_10_Music- o+ x9 a- q0 \ g; T
- JSR Music_Play_Next_10& V) H; x% y1 \0 I6 e
- .Pre_10_Music;下10曲
X/ [0 A, }) u- S7 K - LDA FC_Gamepad_Once$ w) t4 N! N( {( p2 w- Y0 P, W6 }
- CMP #JOY_KEY_DOWN: |4 P1 S; ?) Z
- BNE .Reset
0 C6 t3 I' y, D+ n' | - JSR Music_Play_Pre_10% T: k) _0 U; A) l, a7 ^
- .Reset;重播当前曲目' L1 O1 o/ u* {; F1 N8 C
- LDA FC_Gamepad_Once% U, u9 I9 o2 T1 A; p! r- M
- CMP #JOY_KEY_START
; U+ M$ R% }' _% D* A - BNE .End
1 b1 `3 Q6 o& ^1 n- A' m - LDA FC_Music_Index
% a; |) E# i+ }" E) f - JSR Music_Init_Process
: d: W$ d$ b; G3 s - .End! p2 S* Y2 w3 A7 c, U/ Z1 T$ L$ B
- RTS! f' |1 k& f( K/ H V1 n: R
; b, u. ~2 X; A) H: Z0 \$ f- ;----------------------------------------------------------------------
0 p! R$ S- a& O/ k4 z4 b k- p: G3 L - ;播放上一曲
, u" v0 T" ?8 q2 N' Q5 E - Music_Play_Pre2 A0 C* l7 v; J. F! @" i7 L+ l
- LDA FC_Music_Index
0 p' S5 K! r) b! I - BEQ .End
G, G9 D ?( i9 v5 E8 O1 {7 e - DEC FC_Music_Index
* H+ ` h3 J/ D, s! O - LDA FC_Music_Index+ r. H# I t" y) \% [& j
- JSR Music_Init_Process" u. t$ I) L3 z
- .End6 ~& M: }3 e4 z2 c6 i p
- RTS
+ w& T3 T9 M0 w. H- V$ H - ;----------------------------------------------------------------------
. M0 t, K9 `6 e- S! e# w - ;播放下一曲
; @, C; F6 y/ ^' l - Music_Play_Next4 v, I, h {) o* U5 L0 H8 d( v/ u
- LDA FC_Music_Index
: U3 N. j0 b( ?: s) J: w - CMP FC_Music_Max_Index
u0 q7 F% R$ E( O" ]1 q7 Q. y - BCS .End3 |) \5 e; g& Y2 K6 V# U
- INC FC_Music_Index! r" c; O9 i7 c4 G" o
- LDA FC_Music_Index
9 O* k& C$ V9 o. z l: R1 ` - JSR Music_Init_Process) e" U: O! r8 Y# T& @1 C* U
- .End+ W- L: x- C" u* K" @
- RTS
3 u/ A$ R2 t7 ]/ H0 I }1 U
0 l! c4 J" }* m; x# Y- ;----------------------------------------------------------------------) J' t- d3 A5 Q6 N7 z7 g' G
- ;播放上10曲 O0 F( m: t' w2 x6 ~
- Music_Play_Pre_105 H: D2 M& H( y$ s3 P
- LDA FC_Music_Index f; Q- [* g5 h( O
- BEQ .End; Z# r4 b6 E" F" J# f' Z8 f5 M: V* x
- SEC- ^. [4 `$ |1 \& u$ |
- SBC #10 }/ z0 L/ e; K+ O7 U# S
- BCS .Pre_10
" o I& `2 P: } v" S j8 F - LDA #$00
" z3 R7 o y9 ?: u - .Pre_10
- G3 Z: E s* v6 ?: l2 b - STA FC_Music_Index
2 H l: l+ O% P0 C/ r - JSR Music_Init_Process
1 ?2 u1 A4 D3 z - .End
0 |" H' Y6 e _0 q9 z - RTS* T1 J- q. Q' B/ X; P, N# c0 a6 T
- ;----------------------------------------------------------------------! @( m! a9 u: l& z8 J/ n, \
- ;播放下10曲. k9 P/ k' ^6 x3 S& Y3 m: \0 T
- Music_Play_Next_10
- X* w- q3 g' `8 } - LDA FC_Music_Index
8 \- J3 B3 Z3 X4 t, `6 ]; Z - CMP FC_Music_Max_Index; V* g0 ?9 J0 w4 g0 D
- BCS .End6 [2 ^: s8 ?" D$ V, t$ I. o M
- CLC
1 N' ]# }) ~, N+ x! s/ O1 n# O - ADC #10
, K& _% N; T1 d2 ^! O! e* ] - CMP FC_Music_Max_Index1 k1 X# |4 A X! C# O
- BCC .Next_101 `1 V/ C0 p: ?( A' [' `
- LDA FC_Music_Max_Index
- C5 B% ~/ h% e% E6 b9 Q" }* E - .Next_10
2 v& ?2 a/ u7 g+ G$ K) @% V - STA FC_Music_Index
$ e# t8 m/ b1 Z% n - JSR Music_Init_Process
, j5 F/ p. ~$ _: Z# [ - .End
) w5 j; b% K! V: B/ ~: D7 P' L) d1 v6 Q1 p - RTS6 p& M" T+ f4 r" C' s. `5 W
- " Q9 z f1 R8 z$ w
- ;----------------------------------------------------------------------
! e; f, J7 t' F3 e- A2 V - ;8位十六进制转3位十进制制& O' o5 B6 [8 d( ]# x( W
- Hex8ToDec* D( @/ D. V G+ Z o' J, m( L+ ?
- STA FC_Dec_Data_1
: ], _ A% T+ W) N+ d - LDA #$00+ {+ I b9 T0 p* D7 I
- STA FC_Dec_Data_100
" i5 u# o* C/ ^7 c `0 v& u2 V - STA FC_Dec_Data_10: ]+ J. S4 j1 |# [+ J
- LDA FC_Dec_Data_1- x* U# [9 T* p/ Z7 q v8 D" R9 Y
- .Convert_100
. q+ W; ?4 }* I: Q3 U0 s3 b% B - CMP #100
# ^8 a7 N; G/ t1 R' H - BCC .Convert_10
8 x# [3 ]5 w I3 N- e - SEC
5 W: _0 ^- a& x- V) J; d - SBC #100. A/ x$ G2 g8 [) u2 V0 T6 G: \
- INC FC_Dec_Data_100' F; P+ _1 n k) S+ \& r9 h
- BNE .Convert_100
" k4 M' g+ p e- d; h5 F" R( } - .Convert_10
% |' J, e. ^1 e( D/ N- ? - CMP #10
- ~; Z+ L' t/ o - BCC .End
+ q- e3 f5 M5 D* H6 } - SEC
( U8 m$ t; _! |% F, K$ A - SBC #10
" x8 E$ j* a) R* f4 } - INC FC_Dec_Data_109 e/ O; H" N/ d/ P- Y
- BNE .Convert_10
+ {7 d. E9 Z$ \6 V D v - .End
, ], T, ?0 V% `, V( ^ ~ - STA FC_Dec_Data_16 y- S2 ^; z7 y3 Z+ g% [
- RTS
4 p0 `7 h4 X- O: x+ z - 8 Z1 u7 p8 D* O( t
- ;----------------------------------------------------------------------* ]1 {" q* |" M/ `" \
- ;显示曲目信息8 {) J0 I2 [% g: T4 q$ ]& b
- Music_Info_Display
( Z- {& }) [0 c7 X/ K - LDX FC_PPU_Buf_Count, y: C) N' W- K% L' ~
- LDA #PPU_WRITE_MODE_CNT_LINE
' k, V3 ?; y+ R: ^$ r - STA Use_PPU_Buffer,X
7 D$ y% Z. u; B2 T* s' h! I$ u - INX% C1 J% M7 k& |- H' T0 p
-
# _% S& a7 Q3 D* a0 @, T - LDA #>MUSIC_INFO_POS
( f- q8 J8 _; b - STA Use_PPU_Buffer,X' r/ t! m- h! x" f) p" A/ S: V
- INX
$ Y8 T8 h P: ~) x8 W( { - u- `8 |- W5 S7 f1 _6 n
- ;居中
0 U" P1 c2 m; M: b - LDA #<(MUSIC_INFO_POS & $E0) + (32 - 5)/2
4 u' A5 |* ~2 A$ ~6 E& `3 H - STA Use_PPU_Buffer,X; K) D9 S) U# z2 S1 h: p `5 O
- INX- O5 Z# \1 I& s
-
1 Q0 M; C* |6 d, F( L: l* r/ M& M - LDA #$054 J$ u; N. c# r s
- STA Use_PPU_Buffer,X
& ^5 `9 M7 u6 s7 ?: o - INX8 c x2 g | ]1 _2 D- c- {- f
-
g4 O" \- \: k - LDA FC_Music_Index+ b6 f1 R" N2 s$ S
- CLC1 \# c) Q4 n; b9 y) q4 Y+ e$ E* Q
- ADC #$012 M/ g% i+ @ @$ U! I6 m I
- JSR Hex8ToDec
2 q: Z9 w: D% [ - 6 V0 ], n% [* c) G: S! V6 V6 c
- LDA FC_Dec_Data_10, ^# ^& e H' U7 x
- CLC" ^+ v& R* e) Z, b% _: H: c
- ADC #'0' ]! Z3 N) E$ y3 C
- STA Use_PPU_Buffer,X
0 F6 L1 r! P4 N9 E1 \ - INX
/ h8 Z' i* D5 s8 q4 N% y6 f3 b | -
' F+ L( s$ s9 L& D3 @# ` - LDA FC_Dec_Data_1
$ M# U; O; `) ~, r8 R. E - CLC1 }7 V- s A* X3 R
- ADC #'0'" u& d7 q% g: b4 B i
- STA Use_PPU_Buffer,X
0 U- y3 @ j G& x! J - INX
; `8 e8 F$ w4 o) e; K' z0 w. n! a -
4 Z+ C- o. ?$ ?' d- q3 n5 x - LDA #'/'
. A' K0 M, d% E; u5 ~3 e - STA Use_PPU_Buffer,X
( j6 a8 \" r4 I/ X8 r4 o+ L - INX3 u$ R( g/ T7 h/ w. a. w9 g
-
! g9 |* K; V: Z% q% f - LDA FC_Music_Max_Index
; O8 @- l& g$ _6 \1 i - CLC
1 h, i' y- C6 }9 A% Z& @ - ADC #$011 D) s3 V; Y9 {4 e$ ]* T
- JSR Hex8ToDec* l& e% z/ U9 v9 L% A' h( I+ V
-
, b/ M( I' ~' V2 F4 b - LDA FC_Dec_Data_103 g# |: N2 I- ^& D8 o8 |5 X) }) P' ~
- CLC
& {, v- |& H8 s: L4 c - ADC #'0'
0 O6 k$ c4 }/ m& d | - STA Use_PPU_Buffer,X
9 O. ]" Q1 b; |" z - INX: X2 V8 [. |+ s
-
9 `8 ?, o& }6 v6 V - LDA FC_Dec_Data_10 B' W% T4 @' v2 F, C2 }: [
- CLC% Q9 _( ^1 k6 n2 V! u+ m5 _$ G
- ADC #'0'
. D, `3 G9 W: E D - STA Use_PPU_Buffer,X
0 u; e$ Q" a5 P: k3 u - INX
; x$ @& B2 @+ {/ g: N' { - ! p2 L2 v& O6 \* F, _
- .End: t& m' \; g& }4 u4 q
- STX FC_PPU_Buf_Count4 h4 D5 M3 X7 g* M+ E
- RTS
+ {/ w- b% x7 ?$ Z: ?% F& X - 8 Z ?4 ~# K( H& |) H- `, W+ u. U
- ;----------------------------------------------------------------------
+ t- q( t S% G( |* Y0 ] - ;音乐曲目初始化处理
4 N" n* q& ]7 u( S) _ {% J - Music_Init_Process
- w j' u* U1 {" f$ N! D j- M0 j3 X - PHA
; p' ?# F/ }+ M/ |4 ^ - JSR Music_Clear_Process
1 }; y9 d/ \3 u8 d0 U - LDA #$1F
- O5 {6 P, }- d+ l - STA $4015
- l$ q5 R$ N+ {) _$ } - PLA
e9 s0 E6 r9 J" |4 Y& v- u9 ? - JSR Music_Init_Addr
2 T z% C0 M. K; ?5 k! e - JSR Music_Info_Display
: E' k0 Z( V9 g, `: i - RTS
' Z/ W. }: t( C - 5 U1 v( J/ M" u$ B; i! K' H1 Z
- ;----------------------------------------------------------------------+ u r- w# K0 l
- ;音乐播放处理0 {( [/ m8 {; o! M) W% P+ O" u
- Music_Play_Process+ ~# ?& T6 h3 m- b; K/ H6 d$ ^" `
- JSR Music_Play_Addr
: ]9 ?5 D% W% s: l- ? - RTS" J P" Y" H' @' v" q, ?
- 9 }+ \9 Q* e L9 v0 p I( {
- ;----------------------------------------------------------------------
& k8 c" k& V( p' P - ;音乐播放处理# t3 O& o, H3 O/ j
- Music_Clear_Process) T5 ?& V+ R9 w7 Z1 U, D- w
- .IF Music_Clear_Addr
: U- s) ], u& r/ s/ f) J! u - JSR Music_Clear_Addr8 G. ~4 I' q2 w- l
- RTS
7 \: U# J2 E' B9 H* k2 a - .ELSE# {7 o) q. _ i( }7 ^+ p& A
- LDA #$1F' }9 I7 i9 `) `! b1 c& E& Y
- STA $4015
$ P, r5 A, b4 D* {( n/ R* i. m, q# n: G - LDA #$00
" }( @3 l1 `( o/ I+ v1 ^ - STA $4010
. o3 x0 i6 p4 b' X! q. W - LDX #$00
4 Q3 |2 D- U' a& O% n& T# i2 y - LDA #$00
# v6 y0 a, l, \" x - 9 D& J0 B7 |; V3 S' }% Q4 @$ ~
- .Music_Clear_Zreo_Page_0
- ?& Q3 d' [/ r3 V# }8 b, R$ v - STA $00,X) p, K) f0 w8 k* c1 F8 {
- INX
, N* ?+ H3 x+ ~. V9 Z$ o - CPX #Use_Zero_Page_Begin- l- v- q7 I8 l l6 h
- BCC .Music_Clear_Zreo_Page_0
5 [* C3 i8 h1 }6 y- T - + g! U1 J1 u3 Z, z M4 I/ ^
- LDX #Use_Zero_Page_Begin + Use_Zero_Page_Size
& {! s3 E: M1 s, j' T - .Music_Clear_Zreo_Page_1
4 i( Q* G2 d: W: x9 H - STA $00,X5 |9 Z L0 J! @* c) o3 q9 h& |) P
- INX
8 P, e, y9 t- A4 I6 r5 a - BNE .Music_Clear_Zreo_Page_1$ ~3 k$ p$ e8 ~# B/ Z2 J: g+ H5 [) G
-
f3 y, e6 h) J0 J5 R - Music_Clear_Process_1+ U0 w" O2 V, b) s' @: c, {* N
- STA $0600,X$ q/ ]6 v; u; X: w( @
- STA $0700,X. j3 m) y8 O" h Q3 y
- INX1 S* ?7 A0 {# W$ |7 }8 G I
- BNE Music_Clear_Process_1# g% z' |# w# l6 j2 `
- LDA #$10
# @2 L" |4 h& z g6 n# o$ E - STA $40001 G4 C3 q# \% ? N; t! L
- STA $4004
9 h! o' Y' t6 U+ }6 x - STA $400C4 c" U- O7 e! w6 d1 Q
- LDA #$00( |% T R% J, h$ n
- STA $4008
+ s/ g% e5 S) s( ~# P( _) n - LDA #$0F/ H# N, [5 S @
- STA $4015
% u4 }5 P& h- a7 u - .ENDIF
8 V2 \5 [2 E, U1 M$ t -
2 y6 }- c1 n/ q7 L# \; j - RTS- c6 x3 A& F4 D9 y5 y# Q: e2 s& K
& D1 }& Z( x: C( G# T* T( g) Z- ;======================================================================
' W: F) L' ?; A) u+ q - ;重启处理4 u2 I& {# G' }+ B7 s4 _- F# ]
- Reset_Program
4 P" n/ Q2 q5 I - SEI" O7 H- V8 V' |) s9 m# X* _
- CLD/ A2 N2 m9 _7 x
- LDA #$003 f i8 A7 W& _3 e$ P
- STA PPU_CTRL l" b# Y8 ^6 U* L+ {
- STA PPU_MASK
* r! f& [3 n8 b" U - STA JOY2_FRAME
j# _) C* W5 ~% \$ R0 c- [$ I - STA APU_STATUS
2 f( G; ^7 m/ d& |0 g) A -
1 w' {' c& w2 {6 ?$ [, C - ;等待屏幕准备完毕
. j& I6 c! A$ ^9 F# ]4 U - LDX #$02* }8 y. R; L5 w, ^) b3 M
- .Wait_For_Screen_Ready( ?6 F. v' [0 O5 @4 @
- LDA PPU_STATUS7 Z. _2 l3 l) h; D: m
- BPL .Wait_For_Screen_Ready
4 F+ e- _0 b8 a! @& H - DEX
& l: r4 i2 ~' a1 I; ]& x - BNE .Wait_For_Screen_Ready$ V$ |! w! Z6 E& x( I+ m% A
-
$ g* f* X6 a1 {% g( p9 @ - ;清空调色板
0 @9 j' I9 u3 y- C - Palette_Clear& D# G* y5 j, [
- LDA #$3F" S& a/ d0 ^' q/ ^# y; I' K
- STA PPU_ADDRESS: [. }4 F2 V( X% R+ I6 i
- LDA #$00
: P9 Y: ~. [1 C) r$ F+ m - STA PPU_ADDRESS" h. e8 H4 `" S# f7 T
- LDX #$20) `, e; t2 O8 t2 k* N
- LDA #$0F* b9 O) R8 G& N/ {4 r$ z; c
- .Write_Data
3 L* L$ N: M, a1 w1 A - STA PPU_DATA( z8 N9 o3 a& J9 r5 |
- DEX
! v* B& R( q1 x, @! @ n% D; w8 y - BNE .Write_Data
% U) f, e6 I/ h" z( N - : K0 d+ m4 v% U: q
- ;清除声音 $4000-4013' y$ `' N4 E$ g( m
- LDY #$14- ~ t B5 H: n! H/ Z: \
- LDX #$00, Y0 V# a# T1 L: Q( n/ A
- .Sound_Clear
2 Z0 U6 C/ G8 n9 ~ - STA $4000,X& E9 @: m& S: ]3 A$ {2 k
- INX9 l4 Q3 @7 M' N$ D g1 z* T1 Q. x3 p F7 F
- DEY2 Z# O/ j; |* v! b( }
- BNE .Sound_Clear2 f0 @- F" d! b: c
-
8 B+ [" q% |: O/ Y3 j" _9 @ U5 r - ;清除 RAM $0000-07FF
% n& u; W" ]* M: L, D6 G - LDA #$00) k' n! \# M. p
- STA $00
1 p6 ^& v9 u9 q% f. |6 Z# A - STA $01, P) @/ [' n1 b S& `
- TAY6 H# I n8 p {6 G3 P* Q
- LDX #$08+ w* q2 h1 t I ~0 A9 N5 `4 k
- .Memory_Clear
2 v8 `! P3 r4 |5 L4 T' Z4 _$ C - STA [$00],Y
: m. u: p0 F& x4 l5 V, J5 |! h - INY
( D5 q% f/ Z' [5 g3 C6 { - BNE .Memory_Clear
. _. ?5 t, y+ p; A4 o: ?( s$ y - INC $01
" Y, |) I& e p, U1 ?$ ]. { U8 N - DEX
) I! c9 n; M! b0 U - BNE .Memory_Clear
/ T% R; b" t( C" V+ v -
) u$ X# F, K# G - ;精灵缓冲初始化
& g4 S! z% Q- H |; w v& J% V - LDX #$00" x4 \+ y& v e$ s9 q$ U
- LDA #$F8
7 y9 H) [7 [/ e* \2 J5 ? - .OAM_Clear
& l' T! v! n ?# b. A+ M - STA OAM_DMA_Buffer,X: H' n8 v2 l& r: P# I. ]. v% i
- INX; J2 I8 {/ @3 Y0 W$ g& H5 d4 p- W, O
- BNE .OAM_Clear
! x; U# E( b- N( H' [5 v - 1 M3 Y' j& K7 Z& ^8 d; ~8 W
- ;栈指针初始化' ~: O$ I( ^. F
- LDX #$FF
0 C3 g% f# t' D# K - TXS
# p+ u! v B' ^: R* m- A - # Z5 d0 C: q+ c
- JSR Nametable_Clear;命名表清空0 l m4 ]% D' l, d' w
- JSR Palette_Init;初始化调色板缓冲
+ f8 G3 O6 E3 D - JSR Static_Text_Init;初始化静态文本
. T0 p" M4 ?6 f6 \ -
8 C) R+ n' F# V `/ s. n - LDA #MUSIC_ITEM_TOTAL - 1$ e. ?5 i( y, b2 E8 B9 h
- STA FC_Music_Max_Index
0 w! U- `3 U1 B2 P+ i% p b - ) ?8 d% u1 K" q5 e
- LDA #$1F
$ |" c: ], S. E6 {* R/ B$ [ - STA APU_STATUS' K; b# e" g; k/ I
- LDA #MUSIC_BGM - 11 R- _, D) ?. J8 C4 k5 X( `$ d
- STA FC_Music_Index
- Q; ?& W' r# A1 P0 e, \ - JSR Music_Init_Process;音乐播放
. J9 d0 k9 K7 E$ g+ y- r( K) a3 C - & Q1 T9 l3 _$ k$ R9 P
- ;设置屏幕显示状态缓冲(当NMI处理时控制屏幕显示状态)
% m0 ~. i( C8 C - LDA #$1E9 }+ Z! d& b4 p! ^" \
- STA FC_PPU_Mask_Buf
* C4 ]( [% Y7 h2 j& W( L+ i) g -
6 W+ p( a, U# O9 H8 E3 k - ;启用NMI处理8 t& N$ b8 @8 B
- LDA #$80# X" P; v2 g% F. @* F
- STA PPU_CTRL
& z1 I% r" b, F8 H! K7 D4 o+ [ - ) U+ A# Y$ y& P1 I2 p' |
- ;程序循环, 剩余工作交给 NMI 中断处理
* M3 T( J5 b& @* ?4 K - .Loop
* A K2 d# Y) K: Q8 ^1 B9 z) r - JMP .Loop2 Z( c7 q/ z2 f" v
5 _; _# Y: x) B# |8 x2 b- ;======================================================================* B- k/ u4 Q( y# V2 v. |- |, k
- ;不可屏蔽中断处理% Q8 T, Z+ a: }4 }$ A
- Nmi_Program
5 I$ h. O$ R% G: v2 _1 _# \ - PHA
2 Z% c' k4 V0 x - TXA
" ?5 y, [6 Q( L' `3 O1 Y - PHA
8 }# `% H$ a" |5 F8 B8 Q& [! N" r - TYA
& ^1 k p& C& V0 ^- L - PHA
; ~2 ^: l! n6 `1 g2 K" p - ! _0 n- i7 ~2 m/ t
- LDA PPU_STATUS;读取使得 PPU状态寄存器复位7 M, b6 y& q/ o( I( @* M
- ( y% @8 S! w3 v7 v" @: k
- JSR FC_PPU_Procrss;PPU处理' N) K J/ e4 C' C6 n* f
-
% x0 v% ]7 a9 t/ K+ A: K - ;精灵内存更新
$ f0 F% p; h- j3 q - LDA #$00
6 y' H7 U O2 ~3 ]# t0 w - STA PPU_OAM_ADDR
' h; Q5 F/ N- ?9 e' f9 X9 q - LDA #OAM_DMA_Buffer / $0100
# @& K+ ~# `" q7 ^4 O - STA OAM_DMA6 w. v& E! t" X- v/ l# P
- " a# L9 E5 ^+ |! O
- JSR FC_Gamepad_Process;手柄输入处理
* p" z' M+ u- T, U7 u9 y - JSR Music_Select_Process;音乐选曲处理
! g& t, x; W3 C - JSR Music_Play_Process;音乐播放处理- S' D, e. R% _
- E3 L/ I- P- Q+ t
- PLA! Y$ R0 H. N, m: a
- TAY- N# ^! ^9 c; U$ d
- PLA
* q' y g; x# [( m0 \* u) `, P - TAX a5 s( i- ]! L9 C$ b7 D2 K
- PLA, E6 k! C+ |1 {1 L2 V
- 0 m+ U h# C/ u
- RTI
# i2 o- q; f- v" ^, u
% k8 W" Z c5 @. j2 o1 E! _- ;======================================================================
. ?/ I: x v3 f' K( w) Y v - ;请求中断处理3 c" {+ u: H3 F, r
- Irq_Program
- n& M5 }4 p0 Z# y - RTI4 a0 [+ r \' D [; e: }) a
- 7 ], c0 l4 {+ k, j6 t: Y1 K
- ;======================================================================
8 {- t7 y b9 Y, u% F8 Y. i - ;中断向量表
* j- l# r: b+ l3 F' ` - .ORG $FFFA
: R1 n/ S( B6 {0 @: e) \1 b - .DW Nmi_Program ;NMI触发时执行
Y# D7 I# f5 K+ D8 B6 e - .DW Reset_Program ;载入ROM时最先执行
5 G$ X/ {$ @5 s) W0 X - .DW Irq_Program ;IRQ触发时执行
% v$ l( K1 W. f, S- W% i
复制代码
& F# ~$ R' v; f6 P% W
\1 J2 G8 Y4 j9 H, e* z# V" G+ U; t% X+ `& L4 G* d3 {% u
https://gitee.com/flame_cyclone/nesasm_3_2 |
本帖子中包含更多资源
您需要 登录 才可以下载或查看,没有账号?立即注册
x
评分
-
1
查看全部评分
-
|