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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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Amiga Floppy Inactive

characterizing speed performance of floppy drive controller

So I’ve got things working rather swimmingly right now. Switched drives from Samsung to Sony, and it’s made a huge difference. The Sony just seems to work better. I’m averaging about 355ms per track...

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Amiga Floppy

still hashing some ideas around

I’ve been getting lots of good ideas from the smart guys over at Parallax. They are throwing out a variety of methods and ways I can get this job done. I will say that I’m a little overwhelmed at the pure...

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Amiga Floppy

redone transfer routine

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Uncategorized

Kickstarter: Commodore, The Amiga Years Book

I just wanted to mention that I’m a backer on this kickstarter, and I just wanted to get the word out. I’ve read On the Edge: the Spectacular Rise and Fall of Commodore and I’d love to read this...

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Amiga-VSC Inactive

maybe a big problem, memory arbitration on FPGAs

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...

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Amiga Floppy

sleep inversely proportional to the AFP and no more tokens

So I have figured one thing out. The more I work on the AFP, the less I sleep. At least that’s how it’s been over the last two nights. Two nights ago it was 3am, last night it was after 2am. Ideas come and...

70 views

Amiga Floppy

quick memory check

So on bootup, I now have the hardware do a memory check. I basically take and write out a bunch of values to the memory, and then read them back and make sure they read back properly. The values written are based on...

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Amiga Floppy

an output file from my project

DiskMonTools says it's reading 16200 bytes. My project is reading a filesize of 15892 consistently.
Here's the link to the sampled file.

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Amiga Floppy

java screenshot of reader software

Opinions anybody?

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Amiga-VSC Inactive

on memory controller optimization

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...

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