pdata

said ashamed, has always been, in school is also a lot of things, but instead of 51 single-chip computer This basic thing did not seriously to do, at the beginning of self-study 51 not one weeks, and then to Freescale 16 single-chip machine up, so that 51 has not thoroughly made a clear. is not as good as I know s12 monolithic computer what piece of RAM Ah, flash size Ah, instead is 51 not sure answer OH. such as today again see this problem, have seen before, but because has been not how to

Data: Fixed refers to the first 128 Ram records of 0x00-0x7f, which can be directly read and written using ACC, with the fastest speed and generated CodeMinimum. Idata:It is fixed that the first 256 Ram records of 0x00-0xff are identical to the first 128 records of data, but the access method is different. Idata is accessed using pointers similar to those in C. The statement in the Assembly is mox acc, @ Rx. (It is not important to add: idata in C performs pointer access well) Xdata:Extern

I am ashamed to say that I have been engaged in many things in school for a long time, but I did not seriously do the basic things of 51 single chip microcomputer. I had just learned 51 for more than a week, I switched to the 16-bit single-chip microcomputer of Apsara stack, so that 51 has not been thoroughly understood. It would be better for me to know exactly what kind of S12 single-chip RAM, flash size, but 51's uncertain answer. For example, I have seen this problem again today before, bu

From the data storage type, the 8051 series has on-chip, off-chip program memory, on-chip, off-chip data memory, the on-chip program memory is also divided into direct addressing area and indirect addressing type, respectively, corresponding to code, data, XData, idata, and according to the characteristics of the 51 series pdata type, Using different memory will make program execution more efficient, and when writing a C51 program, it is best to speci

From the data storage type, the 8051 series has on-chip, off-chip program memory, on-chip, off-chip data memory, the on-chip program memory is also divided into direct addressing area and indirect addressing type, respectively, corresponding to code, data, XData, idata, and according to the characteristics of the 51 series pdata type, Using different memory will make program execution more efficient, and when writing a C51 program, it is best to speci

I recently used 51 single-chip microcomputer as a small project. When programming, the following error occurs: Main. C (284): Error c249: 'pdata': Segment too largeMain. C (284): Error c249: 'data': Segment too large At that time, I still did not know what was going on. Later I found that the ram of 51 single-chip microcomputer was relatively small and only B, so I had to save the effort to use it. Use uchar code XX [10] = when you do not need to c

? C51 want to use good need to upgrade C51 compile efficiency, see compiled compilation will help you as soon as possible to produce efficient C51 code master. Or look at the code!MOV 0x08, #0X01; 0x08-0x0a is the address space of the PSTR pointer variable allocated within the RAM areaMOV 0x09, #tmp (0x00)MOV 0x0A, #tmp (0x00)Note: This is a new introduction to everyone, you will wonder why in the previous several cases of the PSTR pointer variables are used in 2 byte space and here to use 3 byt

 DATA: fixed refers to the front 0x00-0x7f 128 RAM, can use the ACC direct read and write, the fastest, the generated code is also minimal. idata: fixed refers to the previous 0X00-0XFF 256 RAM, where the top 128 and data 128 exactly the same, only because the way the access is different. The idata is accessed using a pointer similar to C. The statements in the assembly are: MOX ACC, @Rx. XDATA: external expansion ram, generally refers to the external 0x0000-0xffff space, with dptr access.

Bit It is an IP address of a single position in the 20 h. 2fh Area of the internal data storage space, or a 8051-bit address that can address SFr. CodeIs a Code address between 0000 h .. 0 ffffh. Data It is a data storage address between 0 and 127,

During the optimization project, it often begins to focus on time performance, such as codec MIPS or mcps. When the time performance can meet the requirements, we often add the size parameter for comparison, then we need to consider a variety of

Now the system has been in no matter the status of updates, every once in a while a new version out, some people will pay attention to the system update, but most people do not care, so do not know whether the current computer is the latest version,

process, which hopefully helps with understanding.1. Bubble Method:This is the most primitive, and also known as the slowest algorithm. The origin of his name was because its work seemed to be bubbling:#include void Bubblesort (int* pdata,int Count){int itemp;for (int i=1;i{for (int j=count-1;j>=i;j--){if (Pdata[j]{ITEMP = Pdata[j-1];

result. The factorial operation basically does not use the optimization strategy and uses the traditional recursive algorithm. Code: //# Include # Include # Include # Include # Include Class bigint{PRIVATE:Int sign;Int NB;Int * pdata;Void Init (INT nnb );Void showdata (INT m );Public:Bigint ();Bigint (bigint bnum );Bigint (INT num );~ Bigint ();Void show (); // displayed on the consoleVoid trim (); // NormalizationBigint operator = (INT num );Bigin

is because its work seems to be bubbling:# Include Void bubblesort (int * pdata, int count){Int itemp;For (INT I = 1; I {For (Int J = count-1; j> = I; j --){If (pdata [J] {Itemp = pdata [J-1];Pdata [J-1] = pdata [J];Pdata [J] =

is because its work seems to be bubbling:# Include Void bubblesort (int * pdata, int count){Int itemp;For (INT I = 1; I {For (Int J = count-1; j> = I; j --){If (pdata [J] {Itemp = pdata [J-1];Pdata [J-1] = pdata [J];Pdata [J] =

video)This is the most primitive and well-known slowest algorithm. The origin of his name is because its work seems to be bubbling:# Include Void bubblesort (int * pdata, int count){Int itemp;For (INT I = 1; I {For (Int J = count-1; j> = I; j --){If (pdata [J] {Itemp = pdata [J-1];Pdata [J-1] =

1. Bubble Method: This is the most primitive, and also known as the slowest algorithm.The origin of his name was because its work seemed to be bubbling: Copy Code code as follows: #include void Bubblesort (int* pdata,int Count) { int itemp; for (int i=1;ifor (int j=count-1;j>=i;j--) { if (Pdata[j]ITEMP = Pdata[j-1];

Data structure is one of the greatest challenges behind pointer learning C/C ++. The core of this issue is the linked list. Linked List is the most widely used data structure. It can be said that it is a stepping stone for you to learn how to enter the intermediate level of computer! This article provides complete two-way linked list Code. Although there are only several page partitions, it is worth your attention to every line! I hope that beginners will spend a week (of course you have to unde

#include Static void destroy_progress (GtkWidget * widget, ProgressData * pdata);/* update the progress bar to see the movement of the progress bar */static gint progress_timeout (gpointer data) {ProgressData * pdata = (ProgressData *) data; gdouble new_val; /* calculate the progress bar value using the value range set in the adjustment object */new_val = gtk_progress_bar_get_fraction (GTK_PROGRESS_BAR (

Make filezilla compatible with ftpanywhere FilezillaFTP is a well-known open-source standard FTP client software, but its current version is incompatible with the grid FTP provided by ftpanywhere, currently, it cannot be compatible with the settings provided by it. Therefore, I download its source code snapshot.[2009.4.16] to check whether it is possible to make it compatible by modifying the source code. Decompress its source code, go to the subdirectory/src/engine, and open ftpcontrolsocket. C