Search found 228 matches

by Rolo
Mon Jan 27, 2014 10:13 pm
Forum: For Sale
Topic: Five Dragon multi cartridges for sale
Replies: 12
Views: 11940

Five Dragon multi cartridges for sale - SOLD OUT

SOLD OUT
by Rolo
Thu Dec 05, 2013 9:09 pm
Forum: Uploads
Topic: Katerpillar Attack Cartridge for the Tandy CoCo
Replies: 24
Views: 14913

Re: Katerpillar Attack Cartridge for the Tandy CoCo

By the way, is there any way to upload pictures to be seen in the message without having to scroll that much? That is something I would like to know too! But I fear, the only way is to reduce the pictures' resolution. The notation of the web page (i.e. "pict.jpg|200px") doesn't work here. Funny, ol...
by Rolo
Wed Dec 04, 2013 4:52 pm
Forum: Uploads
Topic: modified Tandy rom images (7)
Replies: 2
Views: 4679

Re: modified Tandy rom images (7)

Thanks, Rink!
I hope you've reprogrammed the roms on your multi-cart in the meantime. Now there are better games, than those I initially put on yours :D .
by Rolo
Wed Dec 04, 2013 2:06 am
Forum: Dragon General
Topic: I/O Cartridge (Show and Tell)
Replies: 24
Views: 15417

Re: I/O Cartridge (Show and Tell)

Oh I see, ISA boards are hard to find these days and extremely expensive.
But how about that:
Streifenrasterplatine.jpg
Streifenrasterplatine.jpg (34.35 KiB) Viewed 3161 times
It's just 2.25€ (UP 720HP, Streifenrasterplatine, Hartpapier, 160x100mm) at http://www.reichelt.de
by Rolo
Wed Dec 04, 2013 12:26 am
Forum: Uploads
Topic: modified Tandy rom images (7)
Replies: 2
Views: 4679

modified Tandy rom images (7)

Part seven: 03-Dec-2013: I modified another Tandy few roms to make them fully Dragon compatible. --------------------------- Tetris modDragon.rom -16k rom- Redefined all the keys. The game now works on Dragon like it is explained in the Tandy-manual (numbers, arrow keys, space, i(ncrease speed, l ,k...
by Rolo
Tue Dec 03, 2013 11:44 pm
Forum: Uploads
Topic: Katerpillar Attack Cartridge for the Tandy CoCo
Replies: 24
Views: 14913

Re: Katerpillar Attack Cartridge for the Tandy CoCo

Hi Pere, and there are a few programs that use or need just the upper bank, but no different rom, like the above mentioned "DupliDisk" or the one I've just been working on: "Arkanoid". Or "Soko-Ban" and probably some more. What is the serial number of your D32? When did they solder in sockets? Mine ...
by Rolo
Tue Dec 03, 2013 11:27 pm
Forum: Dragon General
Topic: I/O Cartridge (Show and Tell)
Replies: 24
Views: 15417

Re: I/O Cartridge (Show and Tell)

Hi,
there used to be experimental ISA-boards for IBM-PC-compatibles, like that one on the photo:
PCIExpBoard.JPG
PCIExpBoard.JPG (1.1 MiB) Viewed 3166 times
I abused it with a saw, as you can see. It was full size, quite huge. Maybe you can still get those in some electronics shops or ebay? Is that, what you're looking for?
by Rolo
Thu Nov 28, 2013 11:58 pm
Forum: Uploads
Topic: Katerpillar Attack Cartridge for the Tandy CoCo
Replies: 24
Views: 14913

Re: Katerpillar Attack Cartridge for the Tandy CoCo

The Dragon 32 is fitted with two 24-pin 4764 type (Texas Instruments TMS4764-35NL) ROM chips or equivalent. IIRC, a suitable EPROM replacement would be the Motorola MCM68764 or MCM68766. And of course on my board, both are soldered in :roll: . Sockets must always have been very expensive... I've al...
by Rolo
Thu Nov 28, 2013 11:36 pm
Forum: Hints and Tips
Topic: Introducing: Dragon multi-cartridge for roms
Replies: 16
Views: 17101

Dragon multi-cartridge modified for 16k-roms

In the meantime I modified one my multi-cartridges for the use of 16k roms. This is quite easy to do. I marked the changes with red ovals on the photos below: multicart16ktop.jpg multicart16kbottom.jpg One cartridge now can hold up to sixteen 16k-roms, using four 27C512 eproms. There are not many 16...
by Rolo
Fri Nov 08, 2013 10:04 pm
Forum: Dragon General
Topic: I/O Cartridge (Show and Tell)
Replies: 24
Views: 15417

Re: I/O Cartridge (Show and Tell)

Yeah, my headers really are crappy, too. I'll change them again. At the moment I have no good solution on my mind...