A few DC2N3 and DC2N4-LC available

I’ve decided to list five DC2N3 devices and one DC2N4-LC device for sale. All of these are fully built and tested so once the shipping costs are worked out (based on your location and preference on standard airmail or courier shipping) you can expect a quick turnover from my hands to the shipping service itself.

For the details, see my sales page. Before contacting me make sure you read and understand the Payment and Shipping sections and the feature set of the device you are interested in. It’s all written down to avoid the “I thought that it would be possible to…” scenario:)

I am shipping whatever I’ve got ready for a few reasons. Firstly, I cannot fulfil DC2N5-LC orders yet as I have only recently ordered the components to prepare kits and devices. Secondly, there is a medical emergency in my family for which I will have to do an unplanned trip to Italy and arrange quite a few things there with very short notice. Little I know of when, where, and for how long I will be unavailable to follow-up with any of this.

Posted in Retrocomputing, Technical | Tagged , , , , , , | Leave a comment

DC2N5-LC prices announced

There we go. DC2N5-LC prices are official:

  • £20.99 for a DIY kit (without case) and
  • £35.99 for a fully assembled and cased device.

For details, see my sales page.

Posted in Retrocomputing, Technical | Tagged , , , , , , , , | Leave a comment

DC2N: another family picture

Here’s an overall picture of the main devices in the DC2N family along with the media they use.

The DC2N family

The DC2N family

From left to right and top to bottom:

  • DC2N with an SD Card,
  • DC2N2 with a micro SDHC,
  • 2 x DC2N3s with a USB flash-drive,
  • DC2n4 and DC2N4-LC with a USB cable, and
  • DC2N5-LC with a micro SDHC.

I also thought to put down a few dates around the development of those devices:

  • DC2N: development started in late 2006,
  • DC2N2: development started in 2013,
  • 2 x DC2N3s: development started in 2010,
  • DC2n4 and DC2N4-LC: development started in 2011 and 2015 respectively, and
  • DC2N5-LC: development started in 2015.

As you can see DC2N2 was started after DC2N3 and DC2N4 were already mature projects. The reason is that I wanted to address a few limitations of DC2N without changing the concept/architecture too much: hence I reserved version 2 for such effort (due to occur at a later time) and moved from version 1 to version 3 instead.

Posted in Retrocomputing, Technical | Tagged , , , , , , , | Leave a comment

DC2N2 firmware updates and another build finished

After work yesterday I managed to finish a number of updates to the DC2N2 firmware and complete the build of another prototype, which is looking very good indeed.

I haven’t done significant changes to the DC2N2 firmware since January 2014 but I really felt like aligning it to the DC2N5 firmware so here I am doing so:)

DC2N2 from the tape port connector

DC2N2 from the tape port connector

DC2N2 from the dumping edge

DC2N2 from the dumping edge

So far I re-tested Tape dumping, TAP v1 Playback and Recoding of a file from the C64.

Here’s a snapshot of the stream in a recorded file:

Signal recorded by DC2N2 from the C64

Signal recorded by DC2N2 from the C64

One might argue that DC2N5-LC obsoleted DC2N2. That is partly true, but DC2N2 comes with self-update capabilities: Firmware updates are taken in from the micro SD card at boot time in DC2N2. Besides, I don’t plan providing more than a handful DC2N2s, which might boost their value in a few years. I won’t be the beneficiary of the value increase as I plan to get these little cool devices out to users sometime soon:)

Posted in Retrocomputing, Technical | Tagged , , , , , , , , | Leave a comment

More DC2N2 and DC2N5 development

I’ve finally added the option to set the date and time for the RTC provided by both DC2N2 and DC2N5: just placing a TXT file on the micro SD Card with the correct name and contents will achieve the desired effect. The advantage of that is that each file saved to the file system by DC2N2 and DC2N5 will be stamped with a current time and date, for later reference.

This option was already available in DC2N3 so it was quite simple to integrate it elsewhere:)

Posted in Retrocomputing, Technical | Tagged , , , , , , , , | Leave a comment

More Last Ninja 2 cheating

Almost exactly one year ago I published a POKE to make enemies slower for LN2 level 1.

The side-effect of such POKE was that enemies would be more likely to throw shurikens to Armakuni after an evasive action. Well, it’s about time to fix that with another POKE:

POKE 42745,18 : REM make weapon throwing ineffective for opponents for LN2 level 1

The battle couldn’t get easier than that this time:)

Posted in Retrocomputing, Uncategorized | Tagged , , , , , , , | Leave a comment

DC2N5-LC update

Along with using a larger font, I have also integrated the module that extracts the file name for a few formats, i.e. CBM ROM, Turbo Tape 250, and Turrican:

DC2N5-LC file name extraction example

DC2N5-LC file name extraction example

I’ve also re-dumped Turrican using the “half-wave” method and the result was great once “forcefully” converted to TAP version 1: 99% recognized in TAPClean and all check bytes checks passed.

I must admit I am really happy with these results:)

On a sad note when I turned on my C64 for making a video about USBhost-64 loading my latest crack intro, I stumbled on an issue: Immediately after being turned it shows “PRESS PLAY ON TAPE” and is unresponsive to keystrokes, but the C= key.
I tried to load something from tape and it only loads up to the “FOUND <file name>” message: after that the C64 gets stuck at the “READY.” prompt.

It looks like I might finally have to face the task of trying to repair my own retro hardware.

Posted in Retrocomputing, Technical | Tagged , , , , , , , | Leave a comment