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Julian Bell
Julian Bell

Ef 232 Parallel Port Driver Downloadl

This is a free utility that is used for editing the registry to ensure the serial number descriptor of each FTDI device is ignored during driver installation. This feature ensures any FTDI device connected to a USB port is given the same COM port number.

Ef 232 Parallel Port Driver Downloadl


FTD2XXST is an EEPROM serialiser and testing utility for FT232 and FT245 devices. FTD2XXST is based on our D2XX drivers and will work on Windows 98, ME, 2000 and XP platforms. The latest release supports the extra features of the FT232BM and FT245BM devices as well as the AM series devices.

As interfacing devices to the 1600 could be complex, GI also released a series of support chips with all of the required circuitry built-in. These included keyboard drivers, cassette deck interfaces for storage, and a host of similar systems. For more complex systems, GI introduced the 8-bit PIC in 1975. The idea was that a device would use the PIC to handle all the interfacing with the host computer's CP1600, but also use its own internal processor to handle the actual device it was connected to. For instance, a floppy disk drive could be implemented with a PIC talking to the CPU on one side and the floppy disk controller on the other. In keeping with this idea, what would today be known as a microcontroller, the PIC included a small amount of read-only memory (ROM) that would be written with the user's device controller code, and a separate random access memory (RAM) for buffering and working with data. These were connected separately, making the PIC a Harvard architecture system with code and data being managed on separate internal pathways.

External data memory is not directly addressable except in some PIC18 devices with high pin count. However, general I/O ports can be used to implement a parallel bus or a serial interface for accessing external memory and other peripherals (using subroutines), with the caveat that such programmed memory access is (of course) much slower than access to the native memory of the PIC MCU.

Third party programmers range from plans to build your own, to self-assembly kits and fully tested ready-to-go units. Some are simple designs which require a PC to do the low-level programming signalling (these typically connect to the serial or parallel port and consist of a few simple components), while others have the programming logic built into them (these typically use a serial or USB connection, are usually faster, and are often built using PICs themselves for control).


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