Worked on the Amiga VSC this past weekend at Notacon with my super smart friend Brian P.  We made some progress, including eliminating all but the smallest HSYNC related bugs. There is still a problem that is haunting...

I haven’t put much time lately into the amiga VSC but I put in a little tonight. I’ve got the image cleaner than it has been, but there is still noise on the left hand side, and a left-center band of...

I uploaded a video to youtube that shows some video artifacts happening with the scan doubled video. The entire video shakes as if interlaced, but it’s not. Original res 320×200(15.7khz), doubled to...

Here’s a screen shot of the amiga vsc in action.  As you can see, there’s been much improvement from the last session. Even though I am now passing the amiga’s VSYNC through the FPGA to the monitor, I...

So a few versions later, trying some different failed attempts, I am finally starting to get a little closer.  Here’s the best video I’ve got so far, but my image is still scrolling. If I can fix the...

So I got everything hooked up tonight, and the good news is that I have definitely made some progress! It appears to work, although the video is currently scrolling with multiple video problems, but I definitely have...

Ok, so I’ve finally got some work done on this tonight. I’ve decided to go to a 4-line buffer system because it’s a more round number than 3 — makes everything easier to deal with. I’ve...

So as my last couple posts alluded to, I’ve been having problems with my DRAM-based design. My controller isn’t dual-port. And I’ve been trying to wrap my head around a time-slot method for arbitration...

So I’ve been trying to optimize a freeware memory controller for my particular memory chip. I’m running into this situation where the DRAM to ALTRAM copy takes upwards of 24us per line. But I only have a...

So far, I’ve been using a user-selectable mux, with a physical switch, to control which process is connected to the single-port memory controller. If the switch is in one position, you can upload via USB a...

I put this together last night. It takes the amiga 5v video signals in on the right hand side and then outputs 3.3v to IDC40-pin connector that connects to the FPGA board. Once I build my header cables, they will plug...

So I was looking everywhere for a female-female header cable that has the right number of pins, to basically interface the Denise IC DIP Clip to my level converting solderless breadboard.  I couldn’t seem to find...

I posted a video to youtube a little while ago showing my progress. It’s a little long winded (surprise surprise for those who read my posts) but it shows basically the framebuffer portion of the hardware working...

I had mentioned on the VSC project description page that I am looking at various methods  for scaling my digital amiga video output from 320×200 to 640×400.  My initial plan was just to do pixel doubling, or...