[FC][最终任务转mapper4程序]

yandagui

;[FC][最终任务mapper1切页程序]
.ORG $CD9B
6 X/ z9 }' F+ @& @! ?BANK_START:
STA $70
- ^7 l7 R3 E8 {  \ TXA
ASL
TAX
  p$ H0 f; B$ x8 \( j/ u/ UPORT_SET:
LDA BANK_DATA,X
STA $6E
0 {; R0 F' C; L( v9 @+ J LDA $CDB8,X
* H% e, [: s0 B3 {5 ` STA $6F
9 ], l, J7 e/ s. V+ P0 l LDY #$00
+ n% {8 M! ~4 j% @# o0 J7 I9 h LDX #$05
LDA $70
PORT_WRITE:
; X* o: B: J, n4 V STA ($6E),Y
+ E: u) z. S+ E, }' Q. Y LSR
DEX
BNE PORT_WRITE
RTS

2 i4 W' B. e  j' k$ b6 w3 z- i
BANK_DATA:
1 o! g/ C; a7 o9 p, A/ i3 H% K .BYTE $00,$80,$FF,$BF,$00,$C0,$FF,$FF
+ X" _" g% J8 |% t

;[FC][最终任务mapper1转mapper4切页程序]
.ORG $BFD2   ;初始化跳转
8 z% H0 z' H5 r9 A0 r! G0 @ JSR $FFC0

! N+ [3 L, D0 [, T2 g: H" a/ W5 E
( F* W1 @# O5 I: g) o3 t .ORG $FFC0    ;切页
LDA #$06
STA $8000
+ Z$ V8 s* }" X9 C3 m# t4 [! } LDA #$0E
STA $8001
JSR $8000
" }2 s5 k* p7 W4 M# l RTS
5 I! i: ^, u# N: ~+ a
.ORG $8000    ;数据复制
LDA #$80
STA $A001    ;启用SRAM
# D3 _" m5 X/ W: m" r" }. R1 F PHA
' _3 ?  l% W( {3 a TXA
" a  E+ z. L9 g PHA
LDX #$00
7 y4 f( M3 l3 s0 TDATACOPY:     ;数据复制
LDA $8100,X
) y$ p7 m* u4 H& m STA $7200,X
INX
CPX #$00
BNE DATACOPY
PLA
TAX
% F) S& K) w' n* V3 e: v0 Q! ~! _ PLA
) s, d1 a  J8 K# K RTS

5 k& ~4 c. F' n. b. W, M .ORG $CD9B    ;跳转到转换的切页程序
4 q  A$ n+ {5 \6 p8 `; h STA $70
3 I  k+ @8 f+ k& H! q JSR $7200
RTS

7 `$ \- S2 N; M/ d$ V  .ORG $7300
, c3 }. k  z) T2 n$ W- i. X/ JM1_TO_M4:    ;切页程序
. q5 }# [9 }& I0 v7 x" q7 Y CPX #$00
BEQ REG_SET
6 J9 |# r, ~7 b6 u7 m CPX #$01
BEQ PPU_BANK_0000
( s3 _# Y8 B7 y CPX #$02
# F' \# M1 I5 W& O* d9 K: W BEQ PPU_BANK_1000
CPX #$03
BEQ PRG_BANK
REG_SET:
: k5 C. a- R3 H; m+ } STA $A000
RTS
  h0 Y9 ]6 {# T  .ORG $7320
/ _/ R- Q  t  Z+ B0 F. SPRG_BANK:    ;PRG切页
8 q1 p- t% }) B& L9 b; ?6 X PHA
LDA #$06
STA $8000
9 B$ ]/ v* ]1 m$ d5 t8 O; C$ w9 i PLA
* s5 E) x* l' T# q9 T2 r- ~- U4 Y ASL
4 t9 v1 O6 ?0 R) j- u STA $8001
: x2 q/ _& d4 q3 R  `- g ORA #$01
2 G- ^- i( z+ N PHA
LDA #$07
1 r4 Z  Z: h# H" B- E9 W9 n STA $8000
# ^! o9 f6 @) }2 k; b3 K PLA
STA $8001
/ i, N1 U) f. L2 s' S2 g' y' x: {4 w RTS
.ORG $7340
PPU_BANK_0000:    ;精灵切页
- Y* X- Y1 X1 a0 ~2 b PHA
. i2 I& X9 g3 z/ d$ o ASL
ASL
PHA
' p6 I7 O- i) H" h LDA #$00
STA $8000
1 }5 g& F& F! X2 F) d$ s% H PLA
) r" b/ F+ K: \' s5 S! U STA $8001
ADC #$02
PHA
LDA #$01
7 H+ }6 g! N  Y4 i% ^ STA $8000
" B( g7 O# F& z5 p' s PLA
STA $8001
9 t* z' v8 m  M PLA
RTS
9 a5 n" V/ [. `3 `; D- T$ `
0 M6 E7 G4 ~0 w% l! D0 D) c0 a. ~# C( ?  .ORG $7360
* F% U$ u5 O8 h& y: g" p$ UPPU_BANK_1000:    ;背景切页
/ A3 o4 y% |7 H. N& |. ]( a, N PHA
/ t+ d' ~; V' d0 m0 } ASL
ASL
$ p. {; u) R% V5 {+ V7 x9 { PHA
/ v# s, Y) [8 h1 W+ b8 l7 [9 b LDA #$02
STA $8000
) w7 z3 P+ L; n7 R+ g PLA
, x* _8 X4 R, f6 T2 F- Y- ] STA $8001
ADC #$01
) U7 b5 E/ u! e3 y3 ?' x- B PHA
5 z& N: n) c2 r& M) H1 W" g LDA #$03
STA $8000
  ]5 v# A. V+ D2 ~) S PLA
$ L7 c9 n. \: Q" _% J STA $8001
ADC #$01
) w. }8 q1 e4 K2 |5 _6 e' P PHA
LDA #$04
STA $8000
& `' I  J0 O: M. S3 B PLA
STA $8001
ADC #$01
  m. z) c# ^  O( t& D PHA
# X7 E6 x1 n. H/ \: j LDA #$05
- y9 ^# t) B' j STA $8000
PLA
0 |" ^+ O' g$ O9 c STA $8001
PLA
RTS

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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。。。