[FC][最终任务转mapper4程序]

yandagui

;[FC][最终任务mapper1切页程序]
3 f& b" f& V0 I- ` .ORG $CD9B
BANK_START:
STA $70
5 N# J( Y( h' [& @ TXA
- I2 L3 Y$ z  [4 t; F$ r ASL
8 @. e+ N/ O; Z6 |# \ TAX
PORT_SET:
LDA BANK_DATA,X
( y. ^6 ]2 ^* [; V STA $6E
. A( H) z+ Z) k0 d6 M LDA $CDB8,X
STA $6F
4 j. {+ I0 X% S9 X- W/ H, n LDY #$00
LDX #$05
% w( p5 {. D" W/ t* V6 E4 ? LDA $70
: ~. P; k: y: ~9 oPORT_WRITE:
STA ($6E),Y
LSR
DEX
BNE PORT_WRITE
  J; n9 T, i1 x, q) G RTS


) T5 ~/ E7 S0 s' }BANK_DATA:
.BYTE $00,$80,$FF,$BF,$00,$C0,$FF,$FF

8 n5 F$ A# J5 |" F+ c
;[FC][最终任务mapper1转mapper4切页程序]
+ k- ^' i, Q* R6 q) S6 D: O .ORG $BFD2   ;初始化跳转
  `! e8 @5 F4 N- u5 T, H* I! z) ] JSR $FFC0

3 E, T6 u" o3 |; Y& \( m; E
.ORG $FFC0    ;切页
LDA #$06
STA $8000
: f1 T, A* i: I) M+ V1 @3 g- E LDA #$0E
STA $8001
& ^# x4 D  u$ d JSR $8000
RTS
8 a3 w+ x1 ~6 l" R
.ORG $8000    ;数据复制
2 p* u% V2 M& R, {5 B4 Z% \ LDA #$80
STA $A001    ;启用SRAM
PHA
TXA
  H% H7 v% Q% W* G* }2 ~, A9 u PHA
LDX #$00
DATACOPY:     ;数据复制
1 b/ ^1 _' t0 L: ?+ _- ^ LDA $8100,X
STA $7200,X
INX
& g; p& l$ x/ b7 b) O6 u" j$ r/ d& S CPX #$00
0 p1 o9 Q- r! d. K& w. v8 g# C BNE DATACOPY
5 i, s' o5 K' b2 z) C- B0 Z PLA
TAX
! }7 a8 a3 r! [* C+ q- K" U9 X PLA
! N- n+ p2 r! A RTS

9 s* e3 u5 C+ K: L# Z7 \% z0 m .ORG $CD9B    ;跳转到转换的切页程序
7 f( g, S1 B) L3 k STA $70
JSR $7200
RTS
/ r5 {( u9 d& S$ }
5 |3 e9 W6 W9 H$ z3 h! |" `  .ORG $7300
/ Q8 [! a- S& W7 k: pM1_TO_M4:    ;切页程序
CPX #$00
BEQ REG_SET
+ m4 Q/ U3 o2 g9 N3 P CPX #$01
7 R0 v, J, v( a BEQ PPU_BANK_0000
2 D# T2 y' N  J: E, A CPX #$02
  A2 {0 g+ d6 k* M7 O+ { BEQ PPU_BANK_1000
CPX #$03
: Q* e8 E. A1 s. N4 j BEQ PRG_BANK
6 N) H. Y( u+ i. X+ t3 KREG_SET:
& ]4 i* i5 q2 b1 `) t! q* ? STA $A000
RTS
: B, k8 H3 ~3 _  .ORG $7320
- F- k( D( _) W) A5 z6 }PRG_BANK:    ;PRG切页
3 H0 i/ _4 x0 [9 v7 p PHA
LDA #$06
STA $8000
" x( }# S% l( k$ T PLA
# r6 W  M( Q* T5 |: T2 d ASL
& K# h+ Q) ~' j9 r4 ], U  d STA $8001
ORA #$01
PHA
LDA #$07
; [. B5 B0 Q- L STA $8000
PLA
$ S2 e+ H9 E7 s- ` STA $8001
: b5 M) |- B, M) A6 q# X! E) C RTS
, [: d& M6 y9 W3 Q  Q .ORG $7340
PPU_BANK_0000:    ;精灵切页
PHA
ASL
" t; `+ c9 O9 ?/ v2 f+ f( m ASL
" L- F: x- y" Q6 i PHA
LDA #$00
$ L- E. S% W  f' C+ v7 B" \" _0 L STA $8000
PLA
- e; I: A8 u7 v, J STA $8001
ADC #$02
# k6 M1 K& d0 g% y0 n. Y PHA
LDA #$01
STA $8000
6 G' z1 q* u/ Q PLA
STA $8001
PLA
7 p  V6 y8 A, a9 U! \2 | RTS

' v  s# z! k, R0 J+ x! z  .ORG $7360
PPU_BANK_1000:    ;背景切页
+ N6 i- J# G4 c" H PHA
ASL
, \  `& ]' h& q* f$ ] ASL
: `9 S/ K% _3 H5 ]$ u PHA
LDA #$02
STA $8000
: j  i1 }9 l7 X9 L$ n5 l9 S4 n PLA
4 d4 \; ?# I2 P- o STA $8001
" ~4 ?' t8 k2 ~  _; R" G ADC #$01
! F9 W/ C8 w$ Q) g" _; c6 n3 ^ PHA
' C* G  ], w2 M6 }7 X8 D# T6 u LDA #$03
' \( F2 h3 g( @! U& [' y STA $8000
PLA
: [# R& x5 U  P6 Q$ L! E0 D( z3 o STA $8001
5 ?: U& _1 \. s# a. B. P ADC #$01
- }3 o0 p* o4 j" k0 r3 D$ h' D PHA
LDA #$04
STA $8000
2 M, z0 a) ]4 K* j8 o2 r PLA
6 w, [; {7 r  a3 r- D STA $8001
ADC #$01
2 @: K2 f- |0 s8 b$ v2 y) y+ @; v PHA
& ^! p" x! s& t* t1 |5 T2 _ LDA #$05
# Y7 X( J$ q3 [6 Y6 q STA $8000
' o6 n& u4 r3 p3 k- D PLA
STA $8001
PLA
" ~/ j# C+ U, s* F( z6 Y RTS
! ?( I- G  ]) d6 U  D+ G; @" i
" \8 G- Y# b9 c& Z( T8 A

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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。。。