8位单片机随机数

,$F3,$59,$BF,$25,$8B,$F2,$58,$BE,$24,$8A,$F0,$56,$BC

.DB $22,$88,$EE,$54,$BA,$20,$86,$EC,$52,$B8,$1E,$84,$EB,$51,$B7,$1D

.DB $83,$E9,$4F,$B5,$1B,$81,$E7,$4D,$B3,$19,$7F,$E5,$4B,$B1,$17,$7E

.DB $E4,$4A,$B0,$16,$7C,$E2,$48,$AE,$14,$7A,$E0,$46,$AC,$12,$78,$DE

.DB $44,$AA,$10,$77,$DD,$43,$A9,$0F,$75,$DB,$41,$A7,$0D,$73,$D9,$3F

.DB $A5,$0B,$71,$D7,$3D,$A3,$09,$70,$D6,$3C,$A2,$08,$6E,$D4,$3A,$A0

.DB $06,$6C,$D2,$38,$9E,$04,$6A,$D0,$36,$9C,$03,$69,$CF,$35,$9B,$01

.DB $67,$CD,$33,$99,$FF,$65,$CB,$31,$97,$FD,$63,$C9,$2F,$95,$FC,$62

.DB $C8,$2E,$94,$FA,$60,$C6,$2C,$92,$F8,$5E,$C4,$2A,$90,$F6,$5C,$C2

.DB $28,$8E,$F5,$5B,$C1,$27,$8D,$F3,$59,$BF,$25,$8B,$F1,$57,$BD,$23

.DB $89,$EF,$55,$BB,$21,$88,$EE,$54,$BA,$20,$86,$EC,$52,$B8,$1E,$84

.DB $EA,$50,$B6,$1C,$82,$E8,$4E,$B4,$1A,$81,$E7,$4D,$B3,$19,$7F,$E5

.DB $4B,$B1,$17,$7D,$E3,$49,$AF,$15,$7B,$E1,$47,$AD,$13,$7A,$E0,$46

.DB $AC,$12,$78,$DE,$44,$AA,$10,$76,$DC,$42,$A8,$0E,$74,$DA,$40,$A6

;1664525 * X的第 7~ 0位(X = 0 to 255)

T0:

.DB $00,$0D,$1A,$27,$34,$41,$4E,$5B,$68,$75,$82,$8F,$9C,$A9,$B6,$C3

.DB $D0,$DD,$EA,$F7,$04,$11,$1E,$2B,$38,$45,$52,$5F,$6C,$79,$86,$93

.DB $A0,$AD,$BA,$C7,$D4,$E1,$EE,$FB,$08,$15,$22,$2F,$3C,$49,$56,$63

.DB $70,$7D,$8A,$97,$A4,$B1,$BE,$CB,$D8,$E5,$F2,$FF,$0C,$19,$26,$33

.DB $40,$4D,$5A,$67,$74,$81,$8E,$9B,$A8,$B5,$C2,$CF,$DC,$E9,$F6,$03

.DB $10,$1D,$2A,$37,$44,$51,$5E,$6B,$78,$85,$92,$9F,$AC,$B9,$C6,$D3

.DB $E0,$ED,$FA,$07,$14,$21,$2E,$3B,$48,$55,$62,$6F,$7C,$89,$96,$A3

.DB $B0,$BD,$CA,$D7,$E4,$F1,$FE,$0B,$18,$25,$32,$3F,$4C,$59,$66,$73

.DB $80,$8D,$9A,$A7,$B4,$C1,$CE,$DB,$E8,$F5,$02,$0F,$1C,$29,$36,$43

.DB $50,$5D,$6A,$77,$84,$91,$9E,$AB,$B8,$C5,$D2,$DF,$EC,$F9,$06,$13

.DB $20,$2D,$3A,$47,$54,$61,$6E,$7B,$88,$95,$A2,$AF,$BC,$C9,$D6,$E3

.DB $F0,$FD,$0A,$17,$24,$31,$3E,$4B,$58,$65,$72,$7F,$8C,$99,$A6,$B3

.DB $C0,$CD,$DA,$E7,$F4,$01,$0E,$1B,$28,$35,$42,$4F,$5C,$69,$76,$83

.DB $90,$9D,$AA,$B7,$C4,$D1,$DE,$EB,$F8,$05,$12,$1F,$2C,$39,$46,$53

.DB $60,$6D,$7A,$87,$94,$A1,$AE,$BB,$C8,$D5,$E2,$EF,$FC,$09,$16,$23

.DB $30,$3D,$4A,$57,$64,$71,$7E,$8B,$98,$A5,$B2,$BF,$CC,$D9,$E6,$F3

;==============================================================================

; 最小版本

;==============================================================================

对于单片机来说，使用1K RAM或rom来完成一个随机数，是很浪费的，以下是最小版本，

但是程序执行周期长。程序每次计算所需要的列表值。

;==============================================================================

; 线性叠加伪随机数函数

; 计算 R_Seed=1664525 * R_Seed + 1

;------------------------------------------------------------------------------

; 输入:

; R_Seed0 --- 种子0

; R_Seed1 --- 种子1

; R_Seed2 --- 种子2

; R_Seed3 --- 种子3

; 回返:

; 种子0 ---> R_Seed0

; 种子1 ---> R_Seed1

; 种子2 ---> R_Seed2

; 种子3 ---> R_Seed3

; 重写

; R_Temp,R_Temp+1,R_Temp+2,R_Temp+3

; 注意

; R_Temp~R_Temp+3 和 L_Rand6 是高字节在前,低字节在后

;------------------------------------------------------------------------------

; 空间: 53个字节

; 速度: 调用F_RandomSeed平均2744个周期

; 1624+70* N(N=种子数) = 1624~3864个周期

;==============================================================================

F_RandomSeed:

LDA #1 ; R_Temp=1，需要给定初始值

LDX #3

L_Rand1 STA R_Temp,X

LSR

DEX

BPL L_Rand1

LDY #$20 ; 计算种子 = 种子 * L_Rand4+ R_Temp

BNE L_Rand5 ; 总是分支

L_Rand2 BCC L_Rand4 ; 如果零被移位，分支

CLC ; 把乘数加入乘积

LDX #3

L_Rand3 LDA R_Temp,X

ADC T_Rand6,X ;源码有误，已改正

STA R_Temp,X

DEX

BPL L_Rand3

L_Rand4 ROR R_Temp ; 右移结果

ROR R_Temp+1

ROR R_Temp+2

ROR R_Temp+3

L_Rand5 ROR R_Seed3 ; 右移种子

ROR R_Seed2

ROR R_Seed1

ROR R_Seed0

DEY

BPL L_Rand2

RTS

T_Rand6 .DB $00,$19,$66,$0D ;乘数(高字节在前)

;===================================