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直接key怕按錯的話會消失, 所以分段key$ V" _3 f v, m8 V2 [
" S( A9 T% a6 j3 l' d4 s6 m3 hRead buffer部分) |0 e, _ z, H9 C; }2 c3 T) f
7 i. ]6 A* e. X) o' z' `
--read_buffer
" c$ i1 J( p. D; Mwith rptr(3 downto 0) select rdata <=
! @! S T4 A8 ], I fifo(0) when "0000",
; G3 E* x9 y6 x: q4 n% u6 Z fifo(1) when "0001", K7 Y- }; ^: ?+ h
fifo(2) when "0010", Z6 ~7 Y8 ~8 [- ^/ C/ K9 n2 Q, `: ]. |# `
fifo(3) when "0011",
P( q E0 R* ^" D" o fifo(4) when "0100",
1 U/ N5 h" d% F) M fifo(5) when "0101",
- {6 \2 @$ Q3 y' [& w) h9 ?& @ fifo(6) when "0110",
* V1 q" d, J3 o' U fifo(7) when "0111",+ B5 \$ `; S' V- A
fifo(8) when "1000",
' R" V, N" \" ^ fifo(9) when "1001",
) ^& m0 _5 }) E/ D2 q v0 B2 h fifo(10) when "1010",8 H- s) l* N. [" U0 I
fifo(11)when "1011",- v$ O% m, D( z; P# z
fifo(12) when "1100",) e2 M2 ]" h! u
fifo(13) when "1101",
) z1 \% _) k7 t. y, ]! m$ h; D$ y6 W fifo(14) when "1110",
. h8 t5 M2 N) p# R* O' I& G fifo(15) when others; |
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