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Amiga Floppy

inital results on error correction

While I have yet to actually implement the full-scale error correction as I want to, I did some manual tests today. I basically took a track that I was erroring out on, and swapped in 1-bit away values for the bad bytes. In some cases, it appeared...

keith

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Latest articles

Amiga-VSC Inactive

Removed the black bar, amiga VSC is starting to work much better

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...

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Amiga Floppy Inactive

created testbench for state machine / block ram tester

So tonight I fooled around with ISIM, which is Xilinx’s simulator. I was doing behavior simulation and wrote a small testbench for the block ram state machine that I wrote a few days ago. Really neat stuff...

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Amiga-VSC Inactive

Cause of most of my noise is likely a sample error

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275 views

Amiga Floppy

SX microcontroller with 74HC132

Here’s a picture of the prototype coming together. From the top down on the breadboard, you see a pull-up resistor, on the input that comes in on the yellow wire. The output comes out of the grey wire on the right...

273 views

Oscilloscopes and Logic Analyzers

Hands-Free Debugging: Reviewing Gisler Precision’s Probe Holders

Disclaimer: While I purchased these myself at full price, Gisler did pay for shipping. This is my own opinion. If you’ve ever tried to hold multiple scope probes steady during debugging, you know how frustrating...

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Amiga Floppy

sync’ing to the 0x4489 0x4489

Well, this wasn’t as easy as I first imagined. There are some issues: 1> By the time you’ve detected the 4489 4489, it’s too late to do much about it. This is because I’m writing one bit at a...

263 views

Badge Computer

SRAM Frame Buffer is now up and running!

Exciting times for the Hope Badge Computer. Tonight, I’ve worked out most of the kinks with interfacing the new SRAM module which you can see in posts below this, to the J68 soft-core CPU. This means that I can...

261 views

Badge Computer

Trying to debug my design for an Audio DAC Cirrus Logic CS4334

I purchased a CS4334 to eventually use as an Audio DAC for the badge computer. I’ve never worked with DACs before, and my knowledge of audio is somewhat limited. This audio DAC is a Cirrus Logic CS4334 with...

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Badge Computer

New SRAM PCB is being built

So up to two SRAMs can be installed on this tiny 2″ x 2″ board. To the right is the connector, and the SRAMs are on the left. With current SRAM sizes, you can install 32-megabit SRAMs. That’s 4...

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Amiga Floppy

Logic Analyzers under $1000 comparison

I’ve put up a comparison of hobby style PC usb logic analyzers that cost under $1000.
Have a look!!

Thanks.beste online kasinos ist eine sehr interessante Unterhaltung.

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