[FC][最终任务转mapper4程序]

yandagui

;[FC][最终任务mapper1切页程序]
.ORG $CD9B
BANK_START:
8 K5 ?# A$ @7 c; H1 X STA $70
9 J/ P9 c: G# }4 ?; R; E TXA
4 u" E5 ?! i; x4 f7 A1 v$ C% K/ W ASL
$ Q& }- b) c; h0 ]" R4 | TAX
PORT_SET:
4 U+ k; m* {- T6 U3 S# Y+ D LDA BANK_DATA,X
$ M1 E( o& q3 C( m) I4 V2 B$ H STA $6E
# i9 `7 t5 ~  f/ v% \! e5 h LDA $CDB8,X
0 R8 ~* E! P( F$ D. o STA $6F
LDY #$00
LDX #$05
LDA $70
6 c# Y8 U/ `- O7 J, H  G/ v; O" ^PORT_WRITE:
STA ($6E),Y
. w  K( T7 m  \5 V( k" {- L1 l LSR
. J' }2 v) C+ Y( L) m& ^, P7 Q% P DEX
% Z" @8 w2 O8 i6 k BNE PORT_WRITE
$ J, D" R3 X- Z! r, C; {$ j5 h RTS

  v. x" Q- H+ W! a! p* ^' b' \' p
BANK_DATA:
& ?8 v7 {  X; v .BYTE $00,$80,$FF,$BF,$00,$C0,$FF,$FF
3 G; Z1 S- L( i/ v( c. Y

;[FC][最终任务mapper1转mapper4切页程序]
. a- G  C! O# [9 J7 b .ORG $BFD2   ;初始化跳转
JSR $FFC0

2 J0 b# [% k% Z: K
.ORG $FFC0    ;切页
$ ~1 Z: O; c) U7 K3 B' P! m; D LDA #$06
STA $8000
9 |* o* F$ @: Y1 k8 C LDA #$0E
# D' Y, x4 o% P STA $8001
JSR $8000
: G" u  K6 D3 O. q2 H0 B) `# {# c1 Y1 P) m RTS

.ORG $8000    ;数据复制
LDA #$80
STA $A001    ;启用SRAM
8 y* P. L# R2 E; C. A, M/ L8 B PHA
, \0 A; b. f+ U4 r; P) _) l TXA
PHA
% K2 m2 P( F0 t$ P* c& O LDX #$00
5 Z0 q6 ^8 _" j  K; f2 WDATACOPY:     ;数据复制
LDA $8100,X
STA $7200,X
7 n9 a5 C9 {  ~6 ` INX
" N" w. c2 e6 S) E  Q0 a9 @ CPX #$00
BNE DATACOPY
PLA
TAX
PLA
RTS
+ P- Z( j0 \0 _
5 [' W3 o3 q+ u .ORG $CD9B    ;跳转到转换的切页程序
STA $70
, \& u5 W: f- ]! v$ l& ` JSR $7200
RTS
5 C: O6 c) \7 g+ G! u8 Q4 h9 C
$ p' I0 z" B0 `& l5 Y) @  .ORG $7300
M1_TO_M4:    ;切页程序
CPX #$00
* Y8 T/ A% \7 w) P; |) t BEQ REG_SET
$ |5 B: J. h9 O9 W1 d! _" A CPX #$01
5 p  N% ~: ^; M) a4 p0 l6 d BEQ PPU_BANK_0000
CPX #$02
BEQ PPU_BANK_1000
CPX #$03
4 t* f8 i9 F) S7 u" U$ D4 h BEQ PRG_BANK
REG_SET:
4 d7 w8 G/ P/ x5 T STA $A000
$ M0 x7 p( J7 `4 D) W3 [7 P+ M2 a RTS
: u8 H8 b# ]* V- A" K0 s/ r0 V$ ]  .ORG $7320
PRG_BANK:    ;PRG切页
/ ~* G: j4 X" {# | PHA
LDA #$06
* E+ o1 V% }) a* z' e0 ? STA $8000
PLA
' u( X3 `8 v$ G- \% ~4 V/ V! b ASL
, D3 O2 }# K% s0 t# N1 } STA $8001
1 J2 m$ k+ ~: q ORA #$01
) c. W+ m* @" i: Y- g/ m( i PHA
: X. C) [0 L7 K5 | LDA #$07
7 t2 G* x" F( p! A" ]8 l$ q- v9 [ STA $8000
PLA
" Z% ?! E6 A- @6 ^: j2 C STA $8001
RTS
.ORG $7340
PPU_BANK_0000:    ;精灵切页
+ u# O# U/ B* T6 P5 F/ O; Y3 I; F, }1 U PHA
ASL
3 }$ v( f9 P3 s2 b; W4 X+ L# _ ASL
PHA
LDA #$00
STA $8000
# Z% e, K5 P* x PLA
STA $8001
ADC #$02
: M6 r" p- n" ?& Z6 G6 d PHA
LDA #$01
2 j: z" w1 A+ ?' [$ d3 e* h STA $8000
2 ?" A4 Z6 J( l# i) N' y- k+ Y PLA
0 ~0 e* Q) B# `8 u* Y( E. e6 s STA $8001
" {( Y: a# v0 j1 y7 r/ n# a PLA
RTS
, Y" G# S& t4 A  D
  .ORG $7360
8 e9 R; s' F- I+ tPPU_BANK_1000:    ;背景切页
2 R, A; `: ~4 E7 L" n6 n PHA
$ r) }6 p+ ^/ a$ u3 ~ ASL
# l2 _7 a- f3 e/ p$ ]* n ASL
* g, p0 B7 I0 R" c4 p# j' F/ [ PHA
5 N5 u. c1 l6 r4 } LDA #$02
STA $8000
) |2 w! o- F  P; N1 W# d& [/ X PLA
STA $8001
ADC #$01
9 f* p  y7 t4 b1 ~) l4 L# _ PHA
LDA #$03
STA $8000
2 |, O' F& v4 `0 F; l! n7 D PLA
STA $8001
# N1 d& F' `3 `8 e- m$ @ ADC #$01
) l/ Q8 z& o5 R/ g PHA
6 |2 w: T. n, {1 |8 p) B LDA #$04
. Y+ `+ ~3 Y: k9 N STA $8000
2 e1 Y5 o9 m. ]4 C PLA
STA $8001
# g9 V& [, a! r; h ADC #$01
PHA
" @" o3 F  X- p, N% t6 V# v LDA #$05
STA $8000
# s+ y: H; v2 V4 q/ @ PLA
$ U% N8 P0 L. @% U8 t7 b4 k STA $8001
PLA
' E- r1 Z" A* q- b/ N) R5 B RTS
8 ^* W: w  B& B1 ^5 S' U! t
+ k9 j( B4 Q  M+ `8 t" O0 c: s6 X. R& ?

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liujunbtx

完全看不懂啊、、、、

来了来

看一下是什么。

afti

感谢楼主分享！

shilinnnn

谢谢。。。。。。。。。。。。。。。。。。

ey136

学一下rom扩容的方法，谢谢

huashao1268

看天书啊。。。