參數(shù)資料
型號： CDP1855CD
廠商： HARRIS SEMICONDUCTOR
元件分類： 數(shù)字信號處理外設(shè)
英文描述： 8-Bit Programmable Multiply/Divide Unit
中文描述： 3-BIT, DSP-MULTIPLIER, CDIP28
文件頁數(shù)： 10/15頁
文件大?。?/td> 85K
代理商： CDP1855CD
4-56
For the divide operation (Figure 5), the formula is:
Programming Example for Division
MEMORY
LOCATION
OP
CODE
LINE
NO.
ASSEMBLY LANGUAGE
0000
;
0001
. . Program example for a 16-bit by 8-bit divide using 1 CDP1855 MDU
0000
;
0002
. . Gives a 16-bit answer with 8-bit remainder
0000
;
0003
0000
68C22000;
0004
RLDI R2, 2000H
. . Answer is stored at 2000 hex
0004
;
0005
. . Register 2 points to it
0004
68C33000;
0006
RLDI R3, 3000H
. . Dividend is stored at 3000 hex
0008
;
0007
. . Register 3 points to it
0008
68C44000;
0008
RLDI R4, 4000H
. . Divisor is stored at 4000 hex
000C
;
0009
. . Register 4 points to it
000C
;
0010
000C
E067F0;
0011
SEX R4; OUT 7; DC OF0H
. . Write to the control register to use
000F
;
0012
. . clock/2; 1MDU; reset sequence
000F
;
0013
. . counter; and no operation
000F
;
0014
000F
E464;
0015
SEX R4; OUT 4
. . Load the divisor into the X register
0011
;
0016
0011
E06600;
0017
SEX R0; OUT 6; DC 0
. . Load 0 into the Y register
0014
E365;
0018
SEX R3; OUT 5
. . Load the most significant 8 bits of
0016
;
0019
. . the dividend into the Z register
0016
;
0020
0016
E067F2;
0021
SEX R0; OUT 7; DC 0F2H
. . Do the first divide, also resets the
0019
;
0022
. . sequence counter
0019
;
0023
0019
E26D60;
0024
SEX R2; INP 5; IRX
. . Read and store the most significant
001C
;
0025
. . 8 bits of the answer at 2000 hex
001C
;
0026
001C
E067F0;
0027
SEX R0; OUT 7; DC 0F0H
. . Reset the sequence counter
001F
;
0028
001F
E365;
0029
SEX R3; OUT 5
. . Load the 8 least significant 8 bits
0021
;
0030
. . of the original dividend into the Z
0021
;
0031
. . register
0021
;
0032
0021
E067F2;
0033
SEX R0; OUT 7; DC 0F2H
. . Do the second division
0024
;
0034
0024
E26D60;
0035
SEX R2; INP 5; IRX
. . Read and store the least significant
0027
;
0036
. . 8 bits of the answer at 2001 hex
0027
6E;
0037
INP 6
. . Read and store the remainder at 2002
0028
;
0038
. . hex
0000
CDP1855, CDP1855C
相關(guān)PDF資料
PDF描述
CDP1855CDX 8-Bit Programmable Multiply/Divide Unit
CDP1855CE 8-Bit Programmable Multiply/Divide Unit
CDP1855CEX 8-Bit Programmable Multiply/Divide Unit
CDP1855D 8-Bit Programmable Multiply/Divide Unit
CDP1855E 8-Bit Programmable Multiply/Divide Unit
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CDP1855CDX 制造商:Harris Corporation 功能描述:
CDP1855CE 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:8-Bit Programmable Multiply/Divide Unit
CDP1855CEX 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:8-Bit Programmable Multiply/Divide Unit
CDP1855D 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:8-Bit Programmable Multiply/Divide Unit
CDP1855DX 制造商:Rochester Electronics LLC 功能描述:- Bulk
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