8051 Instruction sets 指令集 Instruction Set Summary of 8051 8051 Software Architecture:y Data memory: lower iRAM(00-7F), upper iRAM (80-FF), bit-addresable RAM (00-7F), SFR (80-FF),xRAM(0000-FFFF).y Code memory: iROM(0000-1FFF), xROM.y Registers: SFR, PC,y8 Addressing modes: ...
8051 Instruction Set: CLR Operation: CLR Function: Clear Register Syntax: CLR register Instructions OpCode Bytes Flags CLR bit addr CLR C 0xC2 0xC3 2 1 None C CLR A 0xE4 1 None Description: CLR clears (sets to 0) all the bit(s) of the indicated register. If the register is a bit...
C Description Clears the carry flag Clears the direct bit Sets the carry flag Sets the direct bit Complements the carry flag Complements the direct bit AND direct bit to the carry flag AND complements of direct bit to the carry OR direct bit to the carry flag OR complements of direct bit ...
Division by zero leaves indeterminate data in registers A and B and sets OV; otherwise, OV is cleared. CY is cleared. AC remains unaffected. User's Manual 4-4 2000-07 C500 Instruction Set Flags Unless otherwise stated in the previous descriptions, the flags of PSW are affected as follows:...
A DS observation consists of five sets of 20 cycles of the slit mask (a measurement), each cycle taking a reading for 2*0.14 seconds on each wavelength. Intensity data for six wavelengths, and the dark count, is recorded for each of the five measurements. The Azimuth and Zenith positions...
So, in successive machine cycles or states, the program counter 90 is incremented to produce a new address, this address is applied to the ROM 82 to produce an output to the instruction register 587 which is then decoded in the control circuitry 88 to generate a sequence of sets of ...
' CONTAINERS SAID TO:CONTAIN ?:-:3762 CTN?? (CARTON):1234 PRODUCTS - 3762 SETS' FTX+AAA+++ETA POD ?: 04/10/02' 01/13/09 CargoSmart Proprietary 60 Segment Group 20 User Option (Usage): Used Purpose: Segment Group Summary: Pos Tag Segment Name 1020 MEA MEASUREMENTS Pos: 1010 Repeat:...