techtravels.org

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...

Latest articles

My new i7-4790k Desktop build

I needed some more horsepower for my FPGA compiles, and because it’s been so long since my last PC build, I decided to take advantage of some free time I had, and build a new machine. This machine is a quad-core...

on recent disk reading results

(this was posted to Classic Computer mailing list, please disregard if you’re on the list.  I think this is an important topic) The last two nights I’ve been busy archiving some of my Amiga floppy collection...

Updated hope badge computer

Here’s the current image for the Hope Badge Computer, which I really think needs a new name. It’s not quite a badge, although the intention is for it to be portable. Last night, I partially integrated the...

Amiga MFM possibilities

Today, while thinking how the heck I’m going to integrate my 3mbps Parallax USB to Serial converter, I was trying to figure out exactly how many different possibilities there are coming out of an Amiga floppy...

RTC Progress

RTC appears to be working and keeping the date and time across cold-starts. I picked the Epson RTC-72423 which is about a $6 chip, but is obviously directly compatible with the OKI Semiconductor MSM6242B.  The design...

Performance of the Hope Badge Computer

I’ve just managed to get some key components working this year, and as a result, the machine is becoming more usable. I wanted to measure the performance of this Frankenstein machine. Ideally, I’d use...