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S3C4510B 参数 Datasheet PDF下载

S3C4510B图片预览
型号: S3C4510B
PDF下载: 下载PDF文件 查看货源
内容描述: 三星S3C4510B的16位/ 32位RISC微控制器是一款高性价比,高性能的基于以太网的系统微控制器解决方案。 [Samsungs S3C4510B 16/32-bit RISC microcontroller is a cost-effective, high-performance microcontroller solution for Ethernet-based systems.]
分类和应用: 微控制器以太网
文件页数/大小: 422 页 / 2160 K
品牌: SAMSUNG [ SAMSUNG ]
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S3C4510B  
INSTRUCTION SET  
ARM Code  
signed_divide  
; Effectively zero a4 as top bit will be shifted out later  
ANDS  
RSBMI  
EORS  
a4, a1, #&80000000  
a1, a1, #0  
ip, a4, a2, ASR #32  
;ip bit 31 = sign of result  
;ip bit 30 = sign of a2  
RSBCS  
a2, a2, #0  
;Central part is identical code to udiv (without MOV a4, #0 which comes for free as part of signed entry sequence)  
MOVS  
BEQ  
a3, a1  
divide_by_zero  
just_l  
div_l  
; Justification stage shifts 1 bit at a time  
; NB: LSL #1 is always OK if LS succeeds  
CMP  
MOVLS  
BLO  
a3, a2, LSR #1  
a3, a3, LSL #1  
s_loop  
CMP  
a2, a3  
ADC  
SUBCS  
TEQ  
a4, a4, a4  
a2, a2, a3  
a3, a1  
MOVNE  
BNE  
a3, a3, LSR #1  
s_loop2  
MOV  
a1, a4  
MOVS  
RSBCS  
RSBMI  
MOV  
ip, ip, ASL #1  
a1, a1, #0  
a2, a2, #0  
pc, lr  
3-99  
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