查到了VRC7的引脚定义 9 ^5 R# d* X4 b# u
4 d) N; l) e$ x+ \0 y
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- g4 e$ N/ y* Z5 f2 ~8 y* K PPU /RD -> | 01 48 | -> NC
/ d3 j- N w8 L6 f7 s4 o; c PPU A13 -> | 02 47 | <- M2
" Z ]. I9 \* m a1 |; ~ GND -- | 03 46 | -> WRAM /CS
. \4 e+ b$ t' ^3 x) k) n R/W -> | 04 45 | <- /ROMSEL8 ?9 j: o# g/ X9 w- j
/IRQ <- | 05 44 | -> PRG /CS
- }! g/ [" |- P7 `; V% F CIRAM A10 <- | 06 43 | -> Audio Out
1 Z' t, ?, G0 B8 P+ Q* R$ Q CPU D0 -> | 07 42 | -- +5V) c# B+ u$ _" ~7 B* X. R" t
CPU D1 -> | 08 41 | -> CHR A17' g/ i* v& I& X. e6 b
CPU D2 -> | 09 40 | -> CHR A16
+ M9 M5 K' |6 j. p+ a/ \4 k CPU D3 -> | 10 39 | -> CHR A15
( H6 G! S" { m) d CPU D4 -> | 11 38 | -> CHR A14& u' a* f! {7 W _. K
CPU D5 -> | 12 37 | -> CHR A13
j+ Z y+ H" B. V$ v2 ~ ~" A$ Q CPU D6 -> | 13 36 | -> CHR A12- ]+ e2 I% P2 k9 C' P
CPU D7 -> | 14 35 | -> CHR A11& [. o- p) U+ m0 I
/DEBUG -> | 15 34 | -> CHR A10
, B& @3 l: c0 U' {" `7 @9 S+ t$ l V5 I CPU A5 -> | 16 33 | <- PPU A12
) S- @# d* g' r' G7 j) r Crystal X2 -> | 17 32 | <- PPU A11
* w) ]! i5 {8 d Crystal X1 <- | 18 31 | <- PPU A10
" a: D- V3 }5 j7 l; G$ t CPU An -> | 19 30 | -- +5V
4 K6 H: ]* D4 ?7 i% i& g1 l PRG A13 <- | 20 29 | <- CPU A14& H% i" |* [; E) \8 N2 e4 j
PRG A14 <- | 21 28 | <- CPU A13
# I* |6 r0 Q( h3 h* s2 s PRG A15 <- | 22 27 | <- CPU A12
8 ^7 A5 A/ S9 ^. i" ?0 e' k PRG A16 <- | 23 26 | -> PRG A18
; |! {. p$ V( x GND -- | 24 25 | -> PRG A17
0 A: B, d; ^/ C( I+ j* i `--------'* z% h; k& d+ f: B9 W/ D3 {" U f
需要监测的感觉应该就连着CPU的这几条线吧? |