parallel slave port write waveforms

... ;‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐    #define  READ   PORTE,0    #define  WRITE PORTE,1    #define  CS    PORTE,2      #define  READBUTTON  PORTA,0    #define  WRITEBUTTON  PORTA,1  ;‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐  ... ;‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐  #define  READ   PORTE,0  #define  WRITE PORTE,1  #define  CS    PORTE,2    #define  LEDPORT  PORTB  ;========================================================================== ... khác  của  master  để  điều  khiển PSP slave (dùng Port B và Port A chẳng hạn) mà không nhất thiết phải là port D và  port E.  Ngoài ra, ta chỉ sử dụng một PSP slave nên việc điều khiển chân CS* (Chip Select) là ...

Ngày tải lên: 03/07/2014, 20:20

... OUTDATA,W PORTD b'11000000' ;Set output Data in PORTD Start ;Select register Bank1 ;Set RD, WR, and CS as ; inputs, Enable Parallel Slave port ;Set Port_ B to all outputs ; ;Enable Parallel Slave Port ... - Interrupt flag register ;* TRISE - Parallel slave port flag register ;* PORTD - Input data from slave port ;* ;* Outputs: ;* PORTD - Output data to slave port ;* INDATA - Input data queue ;* ... Reads PORTD register (if chip selected) RE1/WR/AN6 bit1 ST/TTL(1) Input/output port pin or write control input in parallel slave port mode or analog input: WR = Not a write operation = Write...

Ngày tải lên: 11/01/2016, 11:52

... ("Status port = %Xh\n",StatusPort); return 0; Pascal Pascal programmers can use the port function to access parallel ports To write AAh to a Data port at 378h: port[ 378h]:=AAh To read a Status port ... instructions for port access To write AAh to a Data port at 378h: mov dx,378h 30 ; store port address in dx Parallel Port Complete Accessing Ports mov al,AAh out dx,al ; store data to write in al ; write ... the market for a new parallel port or peripheral, it's worth trying to find out if the peripheral supports using EPP or ECP mode with your port Port Hardware The parallel port' s hardware includes...

Ngày tải lên: 22/01/2014, 11:20

... the parallel port Any port that provides parallel output (as opposed to ports that provide data serially) is a parallel port, but in PC jargon, the term parallel port refers to ports conforming ... Chapter The Parallel Printer Adapter 25 Anatomy of the Parallel Printer Port 26 The DATA Port 29 The CONTROL Port 31 The STATUS Port 33 Printing with the Parallel Adapter 36 Using the Parallel Printer ... to the PC through the parallel printer adapter (i.e., the parallel port) Parallel ports are universally available on all PCs and compatibles Another benefit of the parallel port is that the IEEE...

Ngày tải lên: 04/11/2013, 18:15

... */ outportb(picaddr+1,inportb(picaddr+1) & (0xFF - picmask)); /* Un-Mask Pic */ outportb(CONTROL, inportb(CONTROL) | 0x10); /* Enable Parallel Port IRQ's */ clrscr(); printf( "Parallel Port Interrupt ... Standard Parallel Port Page 11 Interfacing the Standard Parallel Port http://www.senet.com.au/~cpeacock outportb(CONTROL, inportb(CONTROL) & 0xFE); /* Select High Nibble (B)*/ a = a |(inportb(STATUS) ... Occurred \nCheck IRQ Number, Port Address ” “and Wiring."); } outportb(CONTROL, inportb(CONTROL) & 0xEF); /* Disable Parallel Port IRQ's */ outportb(picaddr+1,inportb(picaddr+1) | picmask); /*...

Ngày tải lên: 12/12/2013, 04:15

... (SPP) The parallel port in the original IBM PC, and any port that emulates the original port' s design, is sometimes called the SPP, for standard parallel port, even though the original port had ... early PCs, the parallel port had a base address of 3BCh On newer systems, the parallel port is most often at 378h But all three addresses are reserved for parallel ports, and if the port' s hardware ... the market for a new parallel port or peripheral, it's worth trying to find out if the peripheral supports using EPP or ECP mode with your port Port Hardware The parallel port' s hardware includes...

Ngày tải lên: 15/12/2013, 13:15

... current, and if your parallel port has weak outputs, you may have problems in using other devices on the same port as the key Alternatives to the Parallel Port The parallel port is just one of ... reads or writes a byte to the specified port (In EPP and ECP modes, however, a simple port read or write will cause an automatic handshake.) To write directly to a port, you specify a port register ... for a few ports where this bit performs the direction-setting function normally done by C5 Bidirectional Ports On the original parallel port, the Data port was designed as an output-only port The...

Ngày tải lên: 15/12/2013, 13:15

... and ECP Support A port that supports EPP or ECP modes of data transfer has the best chance for fast parallel- port transfers An SPP requires four port writes to read the Status port, write a byte ... every time it writes to the Data port Parallel Port Complete 31 Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark Chapter These methods won't write to the Data port if the ... it to allow access to a parallel (or serial) port Here's an example: ByteToWrite=&h55 Open "LPT1" for Output as #1 Print #1, Chr$(ByteToWrite); "LPT1" selects the port to write to, and #1 is the...

Ngày tải lên: 15/12/2013, 13:15

... DataPortRead% (BaseAddress%) 'Reads a parallel port' s Data port DataPortRead = Inp(BaseAddress) End Function Sub DataPortWrite (BaseAddress%, ByteToWrite%) 'Writes a byte to a parallel port' s ... ControlPortRead (Inp(BaseAddress + 2) Xor &HB) End Function Sub ControlPortWrite (BaseAddress%, ByteToWrite%) 'Writes a byte to a parallel port' s Control port 'Calculates the Control -port address ... port' s Data port Out BaseAddress, ByteToWrite End Sub Function StatusPortRead% (BaseAddress%) 'Reads a parallel port' s Status port 'Calculates the Status -port address from the port' s 'base...

Ngày tải lên: 24/12/2013, 19:15

... El e TestPort = True Port( PortIndex) Enabled = True Port( PortIndex) PortType = PortType Port( PortIndex) Enabled = True If EcpExists Then Port( PortIndex) EcpModeValue = EcpModeValue Port( PortIndex) ... End If Else PortType End If End if End if If PortType = "" Then False frmSelectPort optPortName(Portlndex) Enabled Port( PortIndex) PortType = "" Port( PortIndex) Address False Port( PortIndex) Enabled ... types : IniWrite = WritePrivateProfileString ("lptdata", "PortOType", Port( 0) PortType, IniWrite WritePrivateProfileString ("lptdata", "PortlType", Port( 1) PortType, IniWrite = WritePrivateProfileString...

Ngày tải lên: 24/12/2013, 19:15

... the Control port Dim ControlPortData As Integer ControlPortData = ControlPortRead(BaseAddress) BitToggle ControlPortData, Index ControlPortWrite BaseAddress, ControlPortData ReadPorts (BaseAddress) ... `toggle a bit at the Data port Dim DataPortData As Integer DataPortData = DataPortRead(BaseAddress) BitToggle DataPortData, Index DataPortWrite BaseAddress, DataPortData ReadPorts (BaseAddress) End ... the Control port of a modified port should always write to Control bit if the Data port is being used for output If the Data port is being used for input, the program should always write to Control...

Ngày tải lên: 24/12/2013, 19:15

... typical parallel cable From this, you might think that a parallel cable isn't a transmission line because the parallel port' s maximum rate of transmitting is much less than Mhz But what's important ... to a regulated +SV The parallel port' s inputs require TTL logic levels, so any logic-high outputs that connect to the parallel- port inputs should be at least 2.4V (Status -port inputs may have pullups ... (CENTRONICS) RECEPTACLE IEEE PLUG 1284-C Figure 6-2 : Parallel- port devices and cables may use any of these connector types Cable Choices Parallel- port cables may vary in connector type, shielding,...

Ngày tải lên: 24/12/2013, 19:15

... each chip Parallel Port Complete 13 Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark Chapter Sub cmdWriteByte Click () `Write the value in the "Byte to Write" text ... all CLK inputs high `This latches the value at the data port to the selected output ControlPortWrite BaseAddress, ByteNumber + ControlPortWrite BaseAddress, `Display the result 1blByte(ByteNumber) ... SWITCH PC PARALLEL PORT 25-P1N D-CONNECTOR GND +5V p 74LS244 BUFFER 18-25 TEST C[RC U IT Figure 7-9 : The parallel port' s data lines can control an x crosspoint switch Parall e l Port Resource...

Ngày tải lên: 24/12/2013, 19:15

... `Latch the data ControlPortWrite BaseAddress, Clock ControlPortWrite BaseAddress, `Read the nibbles at bits 4-7 LowNibble = StatusPortRead(BaseAddress) \ &H10 ControlPortWrite BaseAddress, SelectHighNibble ... using the Status and Control ports 152 Parallel Port Complete Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark Input Applications PC PARALLEL PORT 2S-PIN D-CONNECTOR STATUS ... the data ControlPortWrite BaseAddress, SetControlBitsAsInputs + Clock ControlPortWrite BaseAddress, SetControlBitsAsInputs `Read the bits at CO-C2, S3-S7 LowBits = ControlPortRead(BaseAddress)...

Ngày tải lên: 24/12/2013, 19:15

... `Latch the data ControlPortWrite BaseAddress, Clock ControlPortWrite BaseAddress, `Read the nibbles at bits 4-7 LowNibble = StatusPortRead(BaseAddress) \ &H10 ControlPortWrite BaseAddress, SelectHighNibble ... = To `Select the channel DataPortWrite BaseAddress, ChannelNumber `Pulse Start to begin a conversion DataPortWrite BaseAddress, ChannelNumber + Start DataPortWrite BaseAddress, ChannelNumber ... Figure 8-2 : Eight latched input bits, using the Status and Control ports 152 Parallel Port Complete Input Applications PC PARALLEL PORT 2S-PIN D-CONNECTOR STATUS CONTROL 74HCT244 BUFFER S3 S4 SS...

Ngày tải lên: 24/12/2013, 19:15

... PARALLEL PORT Ngoài số trường hợp Masking ta sử dụng phép Or PARALLEL PORT PARALLEL PORT PARALLEL PORT PARALLEL PORT PARALLEL PORT PARALLEL PORT PARALLEL PORT PARALLEL PORT PARALLEL PORT PARALLEL PORT ... PARALLEL PORT PARALLEL PORT PARALLEL PORT PARALLEL PORT PARALLEL PORT PARALLEL PORT PARALLEL PORT PARALLEL PORT PARALLEL PORT PARALLEL PORT PARALLEL PORT ... PARALLEL PORT PARALLEL PORT Kỹ thuật mặt nạ - Masking: Kỹ thuật Masking kỹ thuật “che” “hiện” số Bit mong muốn nhiều ghi Công cụ để thực kỹ thuật Masking phép toán Logic như: And,Or, Xor… PARALLEL...

Ngày tải lên: 29/06/2014, 15:20

... traffic, support other promotions Personal selling - e.g., new account development, account support/maintenance, increase product trial, encourage purchase/repurchase, build traffic, support other ... support other market decisions (e.g., support sales force), general corporate/product image building, etc - 15 Sales promotion - e.g., build inquires, encouraging inventory building, support ... customer support service and marketing research – are provided though it is possible others exist (Length: page or less) • Customer Support Services o Brief summary of current customer support services...

Ngày tải lên: 08/08/2012, 15:18

... HOW TO DESIGN AND WRITE WEB PAGES TODAY Recent Titles in Writing Today How to Write about the Media Today Raúl Damacio Tovares and Alla V Tovares How to Write Persuasively Today Carolyn ... general readers write effectively for a range of audiences and purposes Some books in the series cover topics of wide interest, such as how to design and write Web pages and how to write persuasively ... Microsoft FrontPage or Adobe Dreamweaver, because WYSIWYGs fail Web writers at three important things: • First, WYSIWYGs fail at supporting revisions to pages Writing must always be revised It never...

Ngày tải lên: 27/08/2012, 13:55

... loose ends here and there Iterative solution Whenever you sit down to write, it is very important to write something So write something, even if it is just a set of notes or a few paragraphs ... writing and gives you self-confidence Often the Materials and Methods chapter is the easiest to write -just write down what you did; carefully, formally and in a logical order How you make an outline ... each chapter heading, a reasonably complete list of things to be reported or explained, you have struck a great blow against writer's block When you sit down to type, your aim is no longer a thesis...

Ngày tải lên: 10/09/2012, 15:25