Home example 2 – Page 24 – techtravels.org

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

4 comments

Latest articles

Amiga-VSC Inactive

video showing current progress

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...

88 views

Amiga Floppy

SX problem is double-ones, ISR code & description

While I shouldn’t be surprised, my SX hardware issue is related to double one’s, where the SX sees transitions back to back, and writes back to back 1’s into memory. This is assuming there aren’t...

88 views

Amiga Floppy

Good news good news. First perfect .adf

Good news indeed! I’ve managed to create a fully functioning .ADF from a floppy. I matched the output from my hardware/software combination with a “transdisk” output, and it matches exactly. I used...

88 views

Amiga Floppy

Of timing, and general progress

I’ve determined that programming is like whack-a-mole(only took me 15 years to figure this out!) Fix one problem, and another one that already works stops working. This is what happened to me yesterday. My ISR...

87 views

Amiga Floppy

USB uart send and receive

Good news, good news. After banging my head on the same problem for the last three hours, I’ve finally made some more progress. Using option #2 from the previous post, I’ve written two non-isr based software...

87 views

Amiga-VSC Inactive

more ordering of parts, soldered pins for lcx245 parts

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...

86 views

Amiga Floppy

amiga floppy project activity

I don’t know how interesting this is, but I thought I’d throw it up anyways. I exported the posts and comments tables from the mysql database, imported into Excel, and then created an activity graph of the...

86 views

Amiga Floppy

Creating more test disks

From both Tim’s suggestions and from a reinforcement from Agans’ Debugging book, Chapter 6, “Divide and Conquer”, they suggest to “Inject Easy-to-Spot Patterns”. And of course, I knew...

85 views

Amiga Floppy

first day back

You know, I always hate the “first day back” working on a project. Things always seem to get screwed up between the time I last worked on a project, and that day. Even if nothing has changed. Or so I say...

84 views

A501 Replacement Inactive

Found problems with incorrect footprints used for some chips

So I received all of the SMT parts today, and attempted to verify that I’ve used the right footprints for the parts. This was a worthwhile effort because I found a few different problems. Also, digi-key shipped me...

84 views