techtravels.org

will put up sample files

I’m going to put up a sample file or two, but I wanted to get the smallest complete group of bytes that I can…. ie like one full sector, etc. So far, I’m just basically streaming bytes, via disk copy...

Success!@#

I hestitate to jump to conclusions, but I think I just passed a crucial first step in getting this to work!@#!# After adjusting some timing on my new code on the SX, I’ve found my first 0x4489 0x4489 pattern. This...

SX software progress

Welp, since I fine tuned the PC to very reasonable numbers, I figure a small overhaul of the SX code is in order too. I had somewhat of an epiphany working the on the SX, which I haven’t *really* looked at in...

Speed of the reading on the PC

Ok, well I’m now satisfied that the PC is fast enough to do its portion of this job, using the standard WinIo dll. I managed to redo a portion of the code so it’s faster, and the total time on the PC is 6...

more followup winIO vs inpoup32

I did a little informal write test. A small tight loop that simply raises pin 1 and then lowers it again. Both in as little code as possible, as clean as possible. WINIO: Total time to raise and lower again, 2.5us...

followup on speed of inpout32

Welp, did some testing last night, and no, it doesn’t look like inpout32 is really going to be any faster. Damn shame because it was relatively easy to setup and use. Quick reply from the authors(thank you) who...

inpout32.dll vs WinIo

From a previous post, I mentioned WinIo as a nice way of accessing the parallel port from win2k. However, it was slow. The authors said, “I should be using MapPhystoLin() anyways”, whenever I asked about...

Parallel port access in win 2k

Accessing the parallel port directly under Windows 2000, XP, etc in a standard user app is not natively available, but there are a couple different solutions available. The free one I use is called WinIo, and it is...

Finals week at pitt.edu

Welp, this is finals week, so don’t expect anything new to show up until after April 28th, 2005. But, this doesn’t mean I’ve forgotten about this project! I am very much interested in moving this...

too many variables

I think that’s really the problem I’ve been facing with this floppy project. Trials and tribulations indeed. Or at least trial and error, with stress on the error part. There are probably less than half-a...

Site updates

Hi, I made some changes at my provider. I now have access to mysql which really opens up the world of various add on packages. I didn’t initially need or look for this support, but I have it now. I also have a lot...

updates

I originally thought that the SX might be sending the data too fast for the PC to handle. As my last post mentioned, one full cycle is 12us, but who knows if this is during a disk-write, going into the cache, etc. I...

PC to SX transfer images

I haven’t spent much time within the last few days on the project. Looking at the data on the PC, I think that there are still some problems. I think the problems lie in the fact that the interface to the parallel...

Timing problems still?

I think I’m still having timing related issues. I have RTCC overflowing every 1.8us which I *know* is less than the 2us bit cell(or less than half the bit cell, if you take it to be 4us), but this seems to be what...

Timing image

I just wanted to throw this up here to show an example of how the timing is working on my project. Its working well. Top line is the input signal from the drive. Bottom line is the firing of interrupts, either from the...