Search found 245 matches

by prime
Fri Dec 28, 2018 8:22 pm
Forum: Hints and Tips
Topic: Dragon MMC and AGD games
Replies: 10
Views: 5088

Re: Dragon MMC and AGD games

Somthing to remember when comparing CoCoSDC and DragonMMC is that IIRC CoCoSDC emulates the floppy controller hardware, DragonMMC does not. In fact the early versions of DragonMMC had no disk support at all. DragonMMC has the following memory map when switched on, all in map 0 : $0000-$7FFF Normal 3...
by prime
Thu Jul 19, 2018 9:31 am
Forum: Dragon General
Topic: Sick Dragon 32
Replies: 36
Views: 7899

Re: Sick Dragon 32

he also was working on an RGB board for the D32 so he should know how to resolve your issue. I was actually the one developing the RGB borard, though Bas was beta testing. Project was shelved as couldn't get it to work to my satisfaction, and board was a bugger to assemble. Prime on here knows him ...
by prime
Fri Jul 13, 2018 7:34 am
Forum: Dragon General
Topic: Sick Dragon 32
Replies: 36
Views: 7899

Re: Sick Dragon 32

Vyper68 wrote: This issue 2 is really early too the date code for the chips are week 44 1982 there are only 8 OKI chips as well.
That sounds like one of the boards using "half good" 64K chips. Those are the easiest boards to upgrade to 64K.

Cheers.

Phill.
by prime
Thu Jun 21, 2018 9:11 pm
Forum: Dragon Hardware
Topic: DragonMMC Announcement.
Replies: 65
Views: 37763

Re: DragonMMC Announcement.

sardine wrote:Hi Phill

is there a changelog ??
yeah was going to upload one, Simon any chance of getting .txt added to the list of allowed file extensions.

Cheers.

Phill.
by prime
Tue Jun 19, 2018 9:13 am
Forum: Dragon General
Topic: MAME - Dragon 200-E
Replies: 19
Views: 5299

Re: MAME - Dragon 200-E

robcfg wrote:I’ll try to look at it during the weekend as I still have the machine with me.
Excelent, thanks Rob.

Cheers.

Phill.
by prime
Mon Jun 18, 2018 10:30 pm
Forum: Dragon General
Topic: MAME - Dragon 200-E
Replies: 19
Views: 5299

Re: MAME - Dragon 200-E

Sorry to resurrect this old thread..... I'm just trying to work out the complete circuit for the addon board so that we can maybe replicated it. I have it mostly traced from robcfg's scans, however there are a few things I can't work out..... Under the 6847 there are a pair of pads linked on the bot...
by prime
Mon Jun 18, 2018 9:08 pm
Forum: Dragon Hardware
Topic: DragonMMC Announcement.
Replies: 65
Views: 37763

Re: DragonMMC Announcement.

Right the 1.1 Firmware is available from the DraonMMC wiki page :

http://www.archive.worldofdragon.org/in ... MMC_SDCard

Cheers.

Phill.
by prime
Fri Jun 15, 2018 1:11 am
Forum: Dragon Hardware
Topic: DragonMMC Announcement.
Replies: 65
Views: 37763

Re: DragonMMC Announcement.

Yep firmware is completely field upgradable. Infact during assembly the only thing I needed a special programmer for was the AVR bootloader. Once that is done the other components can all be programmed from the card. I'll try and post the updated files on the DragonMMC wiki page over the weekend. Ch...
by prime
Thu Jun 14, 2018 3:30 pm
Forum: Dragon General
Topic: Dragon Meetup 2018 - 16th June
Replies: 25
Views: 6551

Re: Dragon Meetup 2018 - 16th June

Right should hopefully be there sometime on Friday afternoon.

Cheers.

Phill.
by prime
Mon Apr 09, 2018 2:57 pm
Forum: Dragon Hardware
Topic: DragonMMC Announcement.
Replies: 65
Views: 37763

Re: DragonMMC Announcement.

sardine wrote:we are waiting for the new firmware.. I dont really care how long it takes to give time for 720k, 360k support :)
You are, sorry still waiting on testers......

Cheers.

Phill.