[FC][最终任务转mapper4程序]

yandagui

;[FC][最终任务mapper1切页程序]
( h% h- _$ i  P6 J .ORG $CD9B
BANK_START:
* C7 I8 Y& a6 s% |' F5 ? STA $70
8 w# P1 z6 h  m" D$ k TXA
ASL
' j3 \% p- [+ A' U" T3 m; X TAX
! v9 R  O- Z( T7 q3 [3 bPORT_SET:
LDA BANK_DATA,X
/ Q6 s% i8 f5 L( B* j STA $6E
LDA $CDB8,X
( |* P9 l! a# v3 a STA $6F
7 m, O& P4 W& S. g: {+ `9 U LDY #$00
$ m9 T: X' Z$ F! D LDX #$05
LDA $70
PORT_WRITE:
9 m2 W/ D. x5 q. r5 J' m STA ($6E),Y
LSR
DEX
# A9 J& Y: Q- s) X BNE PORT_WRITE
RTS
. C# O% S& ^# r5 s/ h0 e) m5 F

BANK_DATA:
( Y  f# M9 q9 j& i2 b8 v .BYTE $00,$80,$FF,$BF,$00,$C0,$FF,$FF

" Q7 z" R2 W; R3 R5 P/ U
  E) B  A0 }+ a1 h  O;[FC][最终任务mapper1转mapper4切页程序]
% t( F5 P: x- R .ORG $BFD2   ;初始化跳转
+ e- ^8 E/ N1 v: k; m+ | JSR $FFC0
5 S( M; G' b; S, ~0 ^  x

: w4 w& D2 i; H/ a' ^, A9 O. I .ORG $FFC0    ;切页
- n' R1 A" t, l" m1 @4 n* m& q LDA #$06
4 m0 _6 h$ m! U8 [ STA $8000
LDA #$0E
STA $8001
# I$ k' [' w7 n" O6 i# M: Y. l JSR $8000
5 ]% ~' W! U) |) d5 v RTS
8 m; ^6 L# _) d: x. K
1 W% [/ v" E1 e) } .ORG $8000    ;数据复制
) B9 V6 |% ^* ~# b LDA #$80
# a; A7 w: R" ~5 _* u STA $A001    ;启用SRAM
4 j$ r5 M" L2 h6 E8 V PHA
TXA
PHA
LDX #$00
DATACOPY:     ;数据复制
LDA $8100,X
STA $7200,X
& A1 R0 P" r7 v' q INX
' b+ N. ^0 `7 W8 P! Q$ {5 A3 @ CPX #$00
" i" g* A8 S8 w BNE DATACOPY
PLA
: D3 l! I6 o8 Y TAX
PLA
0 M7 a' w9 S0 J: a RTS
2 n  e& a: T# I- T
# X) Q4 R/ t. X- `0 { .ORG $CD9B    ;跳转到转换的切页程序
STA $70
JSR $7200
RTS

. H9 y7 |+ [3 Z2 v- w3 L, o  .ORG $7300
, D! D/ S+ h+ m! [/ N2 d6 @M1_TO_M4:    ;切页程序
) Q6 q  |, Z/ Q8 a+ A$ \ CPX #$00
% n6 |& \& U  ]2 |1 t BEQ REG_SET
CPX #$01
+ y; l1 D# z3 \1 e4 {. P BEQ PPU_BANK_0000
$ a( K; `2 A) m9 @ CPX #$02
/ o$ g0 n. D& `$ q2 w BEQ PPU_BANK_1000
; z' k  ~# H  j! ?6 I5 C2 h CPX #$03
+ q+ }0 q( T7 |3 C7 w# P BEQ PRG_BANK
REG_SET:
/ C2 I6 T9 y+ l STA $A000
RTS
  .ORG $7320
" Z4 Y3 n9 M0 e1 F. Z3 [PRG_BANK:    ;PRG切页
PHA
! T9 K1 V1 s; v  A9 A& c LDA #$06
STA $8000
PLA
( s& W8 S. z& x6 }5 j, [6 v4 o ASL
( K! D: I( k( S: F, I5 ?+ k, x STA $8001
  N+ h: l% R9 o$ R ORA #$01
4 s2 `; `- y, c/ z8 i' `, o PHA
LDA #$07
STA $8000
$ i4 o9 u1 P; |: R- M PLA
STA $8001
- D& S/ W7 k3 E4 J RTS
.ORG $7340
+ K0 ?4 ?# O( {- p; d4 z* YPPU_BANK_0000:    ;精灵切页
PHA
. e/ c2 F( r& l0 H. s' P$ G ASL
ASL
* k/ @6 @  x8 o' J3 X- `2 j; g PHA
0 q+ I2 y3 @0 u+ g. _ LDA #$00
STA $8000
" H) K- U, J! A0 i& Y! t/ I PLA
" E' t! S9 i+ ] STA $8001
ADC #$02
+ D9 c0 W' Z0 {4 m PHA
LDA #$01
1 r" \' Y9 \7 O$ D! W, A+ {8 p& D STA $8000
PLA
% z3 N' g4 A7 ^9 k# E$ C: y STA $8001
. T/ Q: }+ H. G& Y PLA
) N  ^. i8 `9 \! X/ {, O RTS

  .ORG $7360
PPU_BANK_1000:    ;背景切页
PHA
ASL
/ D( X5 b& t  f# x8 B  G ASL
PHA
LDA #$02
1 N& {0 L# d0 y+ x& V& q STA $8000
PLA
STA $8001
! q# x  o2 h, [' t- d  o ADC #$01
PHA
! |3 n  n. N9 `: s LDA #$03
* j$ z" i  Z* @' z& ~ STA $8000
PLA
STA $8001
0 {' I( W( A/ j7 B2 } ADC #$01
% A3 |. T4 w5 a! {- q" y, o PHA
LDA #$04
* M- X3 O8 P* v2 u! V STA $8000
PLA
) Z9 A5 ~& |/ l6 R3 Y- M STA $8001
3 t0 u, y; A0 f/ K9 P ADC #$01
PHA
; k: D1 m7 `, W3 |4 N& V" F  k LDA #$05
STA $8000
PLA
  c. z- q% r$ n" }! i" U+ N; V STA $8001
* i0 }4 J# p# E  [  b, x# q, l 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。。。