Tài liệu Parallel Port Complete- P5 doc

Ngày tải lên: 24/12/2013, 19:15

... ix 1 Essentials 1 Parallel Port Complete Defining the Port 1 Port Types System Resources 4 Addressing Interrupts DMA Channels Finding Existing Ports Configuring 6 Port Options Drivers Adding a Port Port Hardware ... 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...

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 ... the port& apos;s IRQ 2 2  Parallel Port Complete Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark. Table 2-2: Parallel port bits, arranged by regi...

Ngày tải lên: 15/12/2013, 13:15

... other waveform by connecting a parallel port& apos;s outputs to the inputs of a digital-to-analog converter (DAC, and writing a repeat- ing series of bytes to the port. One way to generate the ... remove this watermark. Programming Issues Ports that support ECP mode can use direct memory access (DMA), where data can transfer between memory and a port without intervention by the CPU. The...

Ngày tải lên: 24/12/2013, 19:15

Ngày tải lên: 24/12/2013, 19:15

Ngày tải lên: 24/12/2013, 19:15

... StatusAddress=0x379; int StatusPort; StatusPort=inp(StatusAddress); printf ("Status port = %Xh\n",StatusPort); return 0; Pascal programmers can use the port function to access parallel ports. To write AAh to ... the parallel port BytesWritten = VbRealModeIntX(&H21, InRegs, OutRegs) Listing 2-5: Using DOS Interrupt 21 h, Function 40h, to write a block of data to the pa...

Ngày tải lên: 15/12/2013, 13:15

Ngày tải lên: 24/12/2013, 19:15

Ngày tải lên: 24/12/2013, 19:15

Ngày tải lên: 24/12/2013, 19:15