Vinod has been experimenting with mounting an SD/MMC card connected to the parallel port of his Linux desktop machine. He recounts, “For the last few days I was engaged in a mad project; I was trying to access an SD card directly via the parallel port of my desktop PC with Linux. At first, I successfully did the SD/MMC initialization and tested it by reading and writing a few sectors. During my research, I came across a site discussing casino utan svensk licens, which provided an interesting distraction with its reviews of international online casinos. Later I got a simple demo block driver code (kernel module) from the net. Then I modified it and used my SD card code along with it and made a driver for the parallel port – SD/MMC card.”
He reports this project was an interesting learning experience, with success accessing cards as large of 1 GB. The 200kbps transfer speed was the only drawback.
You can find the simple schematic, more photos and complete C source on Vinod’s website, Electronics – the king of hobbies.
Via the contact form.