New Dragon lab-cartridge for sale

A forum for members to offer for sale any Dragon related items to other members. DO NOT POST LINKS TO AUCTIONS. I will use this forum in the future to offer all my spare games to members of this site before they go on e-bay.
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Rolo
Posts: 228
Joined: Sun Feb 10, 2013 7:36 pm

New Dragon lab-cartridge for sale

Post by Rolo »

:D :shock: :D :shock: :D :shock: :D :shock: :D :shock: :D :shock: :D :shock: :D :shock: :D :shock: :D :shock:
I'm offering (a limited number of, I just have ten, at the moment) the new Dragon lab-cartridge version 1.0.
Please have a look at the "Hints and Tips" section for description and photos.
lab-cart component side
lab-cart component side
lab-cart02.jpg (66.93 KiB) Viewed 9986 times
lab-cart solder side
lab-cart solder side
lab-cart solder side.jpg (52.64 KiB) Viewed 9986 times
The price is 10.00€ plus shipping (letter).

Please PM me, if you are interested :!:

-Rolo
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Rolo
Posts: 228
Joined: Sun Feb 10, 2013 7:36 pm

Dragon lab-cartridge plugged into Vectrex

Post by Rolo »

Look, my little experiment with the Dragon Lab-Cart and my Vectrex. :shock: :idea:
Almost same connector, just 36 pins instead of 40. The cartridge shaft is a bit narrower and I had to cut off the corners.

It's just a simple cartridge holding two 2732 eproms for 4k and 8k games/demos/own experiments. I have a few ancient SGS 2732A NMOS eproms lying around, which I'm using. :)
Unfortunately a spring of the second ZIF-socket broke and I had to replace it (with a normal socket, since I did not have another one in the drawer).
Lab-Cart plugged into Vectrex
Lab-Cart plugged into Vectrex
LabCartOnVectrex.jpg (23.69 KiB) Viewed 9827 times
Lab-Cart details
Lab-Cart details
LabCartBig.jpg (41.47 KiB) Viewed 9827 times
Lab-Cart top
Lab-Cart top
LabCartTop.jpg (48.44 KiB) Viewed 9827 times
Lab-Cart bottom
Lab-Cart bottom
LabCartBottom.jpg (52.39 KiB) Viewed 9827 times
I'm doing some funny tricks with Mine Storm and I am getting tremendous scores now :lol: :lol: :lol: :!:
-Rolo
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Rolo
Posts: 228
Joined: Sun Feb 10, 2013 7:36 pm

Another Dragon lab-cartridge experiment

Post by Rolo »

:shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock: :shock:
Look, I show you another experiment with my Dragon Lab-Cart.

I built a new multicart for the VECTREX based on my Dragon Lab-Cart.
Vectrex Multicart based on Lab-Cart
Vectrex Multicart based on Lab-Cart
VectrexMC.JPG (151.59 KiB) Viewed 9752 times
It is capable of holding 27C128 (16 kbytes), 27C256 (32 kbytes) or 27C512 (64 kbytes) eproms.
The two blue jumpers are used to adapt the board to the eprom type.
Two switches put the cartridge into 8k, 16k or 32k banksize-mode. Most of the original games are using 8k. Homebrew games and demos often need 16k or even 32k, which is the maximum cartridge address range of the VECTREX. For example, a 2€ 27C512-eprom-chip can store two 32k-games, four 16k-games or eight 8k-games. The game is selected by turning the gray knob.
Cool 8-), I can check the latest demos now :idea: . The zero injection force socket makes it easy to change eproms. One cartridge and a box of eproms is enough ;). I'm really looking forward to check what's out there, concerning new software...
Vectrex Multicart top
Vectrex Multicart top
VectrexMCTop.JPG (166.83 KiB) Viewed 9752 times

Additionally I put a speed brake onto the cartridge, which can be activated with the help of a 3rd switch, and which can be adjusted by turning a little wheel. It's simply a multivibrator pulsing the !HALT-signal.
Vectrex Multicart bottom
Vectrex Multicart bottom
VectrexMCBottom.JPG (218.79 KiB) Viewed 9752 times
I had to cut the board and reduce it's dimensions a bit.

I built the whole thing nicely into a modified Activision-shell of a dead Atari VCS cartridge. Ok, to make it fitting, that was quite some work to do :!:
Recycled Activision Shell
Recycled Activision Shell
VectrexMCShell.JPG (121.76 KiB) Viewed 9752 times
Under the hood
Under the hood
VectrexMCOpened.JPG (88.81 KiB) Viewed 9752 times
That's what it looks like plugged into the VECTREX:
Multicart plugged into VECTREX
Multicart plugged into VECTREX
VectrexMCInserted.JPG (103.05 KiB) Viewed 9752 times
Regards,
Rolo :lol:
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Rolo
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Another lab-cart experiment

Post by Rolo »

Building a prototype :shock:
top.jpg
top.jpg (43.42 KiB) Viewed 9680 times
sideview.jpg
sideview.jpg (42.31 KiB) Viewed 9680 times
Many wires, the soldering is done. But still no software onboard. Ready for development and some measurements :idea:.
Won't have any time for that the next two weeks, what a pity :!:
jedie
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Re: New Dragon lab-cartridge for sale

Post by jedie »

Rolo wrote:Won't have any time for that the next two weeks, what a pity :!:
...this sounds familiar to me. ;)
... too many ideas and too little time ... Related stuff written in Python:
Dragon 32 emulator / PyDC - Python Dragon 32 converter: https://github.com/jedie/DragonPy
DWLOAD server / Dragon-Lib and other stuff: https://github.com/6809
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Rolo
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Re: New Dragon lab-cartridge for sale

Post by Rolo »

:idea: only two boards left ...

->update: stock down to one board
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Rolo
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Re: New Dragon lab-cartridge for sale

Post by Rolo »

:!: :!: :!: :!: :!: :!: :!: :!:
:!: Sold out! :!:
:!: :!: :!: :!: :!: :!: :!: :!:
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