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參數(shù)資料
| 型號(hào)： | HMS38112 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 4-BIT SINGLE CHIP MICROCOMPUTERS |
| 中文描述： | 4位單片機(jī)微機(jī) |
| 文件頁(yè)數(shù)： | 48/73頁(yè) |
| 文件大?。?/td> | 505K |
| 代理商： | HMS38112 |
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4-9
(14) TM n
Naming :
Status :
Format :
Operand :
Function :
Test Memory Bit
Comparison results to status
ê
Bit address 0
n
3
M(X,Y,n)
à
1
ST
à
1 when M(X,Y,n)=1, ST
à
0 when M(X,Y,n)=0
A test is made to find if the selected memory bit is logic. 1
Status is set depending on the result.
<Purpose>
(15) BR a
Naming :
Status :
Format :
Operand :
Function :
Branch on status 1
Conditional depending on the status
ì
Branch address a (Addr)
When ST =1 , PA
à
PB, PC
à
a(Addr)
When ST = 0, PC
à
PC + 1, ST
à
1
Note : PC indicates the next address in a fixed sequence that
is actually pseudo-random count.
For some programs, normal sequential program execution can
be change.
A branch is conditionally implemented depending on the status
of results obtained by executing the previous instruction.
Branch instruction is always conditional depending on the
status.
a. If the status is reset (logic 0), a branch instruction is not
rightly executed but the next instruction of the sequence is
executed.
b. If the status is set (logic 1), a branch instruction is executed
as follows.
Branch is available in two types - short and long. The former
is for addressing in the current page and the latter for
addressing in the other page. Which type of branch to exeute
is decided according to the PB register. To execute a long
branch, data of the PB register should in advance be modified
to a desired page address through the LPBI instruction.
<Purpose>
<Comment>
Chapter 4. Instruction
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HMS39112 | 4-BIT SINGLE CHIP MICROCOMPUTERS |
| HMS39C70512 | [ARM7 Core Base Solution Product] |
| HMS39C7092 | MMBTA42, 300V, 0.5A, 300MW, SOT-23 |
| HMS77C2000 | [General Purpose(2) : ADC/ LED/ SCI/ PWM] |
| HMS77C2001 | [General Purpose(2) : ADC/ LED/ SCI/ PWM] |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HMS38T2564 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:32bit CPU, 64Kbyte EEPROM, 256Kbyte ROM, 8Kbyte RAM |
| HMS39112 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-BIT SINGLE CHIP MICROCOMPUTERS |
| HMS39C70512 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:[ARM7 Core Base Solution Product] |
| HMS39C7092 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:Embedded Flash MCU |
| HMS3S800 | 制造商:Siemens 功能描述: |
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