Search found 172 matches

by DrCoolZic
Wed Feb 19, 2014 3:54 pm
Forum: Support
Topic: Powering the floppy drive
Replies: 9
Views: 3024

Re: Powering the floppy drive

Do not worry not having enough power will not kill anything :mrgreen: Believe me, you will. I'll just take a note that if you would send in your board because of a power trail issue, I know where it comes from. The board needs power for the CPU + pull-ups, peaks can go up to 400mA. Really, there's ...
by DrCoolZic
Wed Feb 19, 2014 12:03 pm
Forum: Software Development
Topic: Visualizing a C64 floppydisk
Replies: 38
Views: 16675

Re: Visualizing a C64 floppydisk

Nice :) How do you decide what part of the stream would classify as weak bits / NFA? And are the sectors displayed as data or just as flux changes but with the headers and all relevant parts colored for easier identification? My tool does visualization based of the decoded data, but can also genera...
by DrCoolZic
Tue Feb 18, 2014 6:35 pm
Forum: Support
Topic: Powering the floppy drive
Replies: 9
Views: 3024

Re: Powering the floppy drive

Humm I wanted to measure current on DC power connector but unfortunately wont give reliable results as USB pin 1 is always connected to +5v through a schottky diode so current will probably be split?
by DrCoolZic
Tue Feb 18, 2014 6:23 pm
Forum: Support
Topic: Powering the floppy drive
Replies: 9
Views: 3024

Re: Powering the floppy drive

ok ok looking at datasheet http://www.nxp.com/documents/data_sheet/1N4728A_SER.pdf the diode as a max direct current of 217 mA therefore the answer to my question is NO for KF board + drive However if the board has been carefully designed (and I am sure it has been) this seems to indicate that the b...
by DrCoolZic
Tue Feb 18, 2014 6:15 pm
Forum: Support
Topic: Powering the floppy drive
Replies: 9
Views: 3024

Re: Powering the floppy drive

The drive I am using is http://www.datasheetarchive.com/dl/Datasheets-SL3/DSASL0050111.pdf It draw 1.6W in operating mode that is 320mA :) This leave about 180 mA to KF board but does not seems enough. Do not worry not having enough power will not kill anything :mrgreen: There is no danger but unfor...
by DrCoolZic
Tue Feb 18, 2014 5:12 pm
Forum: Support
Topic: Powering the floppy drive
Replies: 9
Views: 3024

Re: Powering the floppy drive

Looking again at Rosalie rev C schematic seems like the +12V is connected through Zener Diode(?) to the voltage regulator ??? 1N4730 has a zener V of 3.9V if I am correct does this means that the KryoFlux board can be powered through the 12V on PWR_FDD1 or PWR_FDD2 as 12 - 3.9 = 8.1V perfect :shock:...
by DrCoolZic
Tue Feb 18, 2014 4:57 pm
Forum: Support
Topic: Powering the floppy drive
Replies: 9
Views: 3024

Powering the floppy drive

Stupid questions :) until now I have always used an external power supply for the floppy drive and the KryoFlux board was powered by the USB cable. I want to try a new setting where everything is powered by the USB I have tried to connect the drive to PWR FDD1 and to PWR FDD2 without success until I...
by DrCoolZic
Tue Feb 18, 2014 1:34 pm
Forum: Software Development
Topic: Visualizing a C64 floppydisk
Replies: 38
Views: 16675

Re: Visualizing a C64 floppydisk

This is so nice that I have implemented the same type of visualization for Atari ST
see viewtopic.php?f=7&t=769
FD Data Layout with NFA (in yellow) just before index
FD Data Layout with NFA (in yellow) just before index
ghost-buster-disk-data-correct-NFA.JPG (366.3 KiB) Viewed 2981 times
by DrCoolZic
Fri Jan 24, 2014 8:23 am
Forum: Software Development
Topic: KryoFlux Atari Analyzer and Converter to STX images
Replies: 10
Views: 5957

Re: KryoFlux Atari Analyzer and Converter to STX images

Thanks :mrgreen:

now that most features are there I need to clean the code and the GUI :oops:
by DrCoolZic
Thu Jan 23, 2014 12:33 pm
Forum: Software Development
Topic: KryoFlux Atari Analyzer and Converter to STX images
Replies: 10
Views: 5957

KryoFlux Atari Analyzer and Converter to STX images

The Aufit Program ( Atari Universal FD Image Tool ) is a program that allow to analyze and generate images for Atari users. The main functions of Aufit is to visualize the content of a FD imaged with Kryoflux using several charts: Histogram, Scattered charts, Track dat content, clock, Disk Layout, ...