Author Topic: 8-bit battles double dragon 2  (Read 1837 times)

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Offline NewsBot

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8-bit battles double dragon 2
« on: 16:10, 21 March 13 »
8-bit battles double dragon 2
3 October 2012, 11:00 pm

 
[

8-bit battles compares the game double dragon 2 with versions from the amstrad,c64,msx,nes and spectrum. ...YOU DECIDE WHAT VERSION IS THE BEST... Amstrad 0:...[/t][/t]
From: thesman32 Views: 204 6 ratings
Time: 09:37More in Gaming

Source: Uploads by thesman32
« Last Edit: 16:15, 21 March 13 by Gryzor »
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Offline Sykobee (Briggsy)

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Re: 8-bit battles double dragon 2
« Reply #1 on: 16:35, 21 March 13 »
NES and Amstrad versions are far ahead of the others, the Amstrad version has larger characters and a lovely helicopter though, but some jerky motion - looks harder to control.

Offline MacDeath

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Re: 8-bit battles double dragon 2
« Reply #2 on: 13:32, 30 March 13 »
Why europeans never realised the MSX had Hardware sprites? seriously?

Offline sigh

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Re: 8-bit battles double dragon 2
« Reply #3 on: 15:04, 01 April 13 »
Looks like the MSX version has the spectrum graphics and cpc music.

Looking on the wiki, it seems to have hardware scrolling in both vertical and horizontal on the MSx 2 + (1988). This game should have been far better than all the other 8 bit versions.

Offline RichAplin

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Re: 8-bit battles double dragon 2
« Reply #4 on: 01:12, 16 April 13 »
Why europeans never realised the MSX had Hardware sprites? seriously?


MSX sprites were pretty bad - monochrome, with a very limited # of sprites on the same horizontal lines.


The MSX architecture was quite C64-like (i.e. you were very dependent on the video hardware, rather than being bitmapped) ..well, c64-like-but-worse. 
[size=78%]I wrote a game for the Memotech MTX (there's an obscure computer) a machine with basically the same hw as MSX.[/size]

BTW In terms of Double Dragon 2 - they were all quite boring. I never thought much of the arcade games, but they had somewhat better AI than most of the home computer versions.  I ended up working on several DD's - I think I finished off the ST/Amiga version (not very good, I inherited a pretty screwed up project), then I did most of DD2 on ST/Amiga myself (a bit better I thought), and DD1/DD2 on CPC. 

That CPC Double Dragon code got reused by other people for a couple more projects (I _think_ it got used for CPC ESWAT and Final Fight)
« Last Edit: 01:17, 16 April 13 by RichAplin »

Offline TotO

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Re: 8-bit battles double dragon 2
« Reply #5 on: 10:12, 16 April 13 »
I love the Double Dragon 2 intro music on Amiga...  :-*
But, I have mainly played this game on the arcade machine, because I had the luke that the "saloon" close to my house get it.
I though that you done a good job on the different micro-computer versions, 25 years ago.
It's not easy to make a perfect port of it, as the arcade version already has much slow-down.
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Offline McKlain

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Re: 8-bit battles double dragon 2
« Reply #6 on: 11:59, 16 April 13 »
It's not easy to make a perfect port of it, as the arcade version already has much slow-down.


Double Dragon 1 also had a lot of slow downs on the arcades. I wonder if they used similar hardware for the second one.

Offline TotO

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Re: 8-bit battles double dragon 2
« Reply #7 on: 16:52, 16 April 13 »

Double Dragon 1 also had a lot of slow downs on the arcades. I wonder if they used similar hardware for the second one.
Sorry, my post was not clear.
I love the DD2 music on Amiga, but I had played DD1 in arcade.
No information on system16.com, but it's probably the same Taito hardware.


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Offline mahlemiut

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Re: 8-bit battles double dragon 2
« Reply #8 on: 00:56, 17 April 13 »
DD1 and 2 have similar hardware, but do differ slightly in sound hardware.

Double Dragon: 12MHz HD6309 (main CPU), 6MHz HD63701 (sub MCU), 1.5MHz 6809 (sound CPU), YM2151 (FM), 2x MSM5205 (ADPCM)
Double Dragon II: 12MHz HD6309 (main CPU), 4MHz Z80 (sub CPU), 3.57MHz Z80 (sound CPU), YM2151 (FM), MSM6295 (ADPCM)

And Double Dragon was created by Technos, not Taito.  Taito licensed it for international sales.
- Barry Rodewald
Amstrad CPC, Sharp X68000, Neo Geo Pocket, and Neo Geo AES system leader at HARP
http://www.homeactionreplay.org/

Offline TotO

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Re: 8-bit battles double dragon 2
« Reply #9 on: 10:21, 17 April 13 »

Double Dragon: 12MHz HD6309 (main CPU), 6MHz HD63701 (sub MCU), 1.5MHz 6809 (sound CPU), YM2151 (FM), 2x MSM5205 (ADPCM)
No... That was what "wikipedia" said, but not what is on the arcade PCB.
The real specs about Double Dragon are on system16.com :
CPU : M6309 @ 3.58MHz, HD63701 @ 2MHz
Sound CPU : M6309 @ 3.58 MHz
Sound Chip : YM2151, MSM5205

As I know, the 6309 series can't run at 12MHz... The maximum clock supported is 5MHz.
The 3.58MHz clock was chosen to match with the NTSC colorburst.

Double Dragon was created by Technos, not Taito.  Taito licensed it for international sales.
I never said that was a Taito game... But that It run on a Taito hardware.
I got 2 arcade PCB of this game. (Licenced by Taito, of course)
« Last Edit: 10:24, 17 April 13 by TotO »
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Offline mahlemiut

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Re: 8-bit battles double dragon 2
« Reply #10 on: 10:56, 17 April 13 »
No... That was what "wikipedia" said, but not what is on the arcade PCB.
The real specs about Double Dragon are on system16.com :
CPU : M6309 @ 3.58MHz, HD63701 @ 2MHz
Sound CPU : M6309 @ 3.58 MHz
Sound Chip : YM2151, MSM5205

As I know, the 6309 series can't run at 12MHz... The maximum clock supported is 5MHz.
The 3.58MHz clock was chosen to match with the NTSC colorburst.
I never said that was a Taito game... But that It run on a Taito hardware.
I got 2 arcade PCB of this game. (Licenced by Taito, of course)

Actually, that's what MAME says.  Many 6309/6809 variants have internal clock dividers, 12MHz is what the CPU is given.
- Barry Rodewald
Amstrad CPC, Sharp X68000, Neo Geo Pocket, and Neo Geo AES system leader at HARP
http://www.homeactionreplay.org/

Offline TotO

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Re: 8-bit battles double dragon 2
« Reply #11 on: 11:19, 17 April 13 »
On my Double dragon PCB, I get a 3.579545MHz and a 12MHz oscillator.
Looking the MAME source code about the M6309, said :

Code: [Select]
case CPUINFO_INT_CLOCK_MULTIPLIER : info->i = 1; break;
case CPUINFO_INT_CLOCK_DIVIDER : info->i = 4; break;

That mean, to run at 3.58MHz the CPU need a 14.31818MHz master clock.
With a 12MHz clock, it only run internally at 3.00MHz.

May be why we get some slowdown... I need to test the board with this instead.  ;D
« Last Edit: 11:28, 17 April 13 by TotO »
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Offline Bryce

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Re: 8-bit battles double dragon 2
« Reply #12 on: 11:42, 17 April 13 »
3.579545MHz is the carrier clock frequency for NTSC video. If the PCB uses divide by 4 circuitry it would use a 14.31818MHz crystal for the video instead. So if your board has a seperate 12MHz clock, then the video and CPU frequencies aren't coupled. The CPU could be running at anything up to 12MHz, you'd have to measure it to be sure.

Bryce.

Offline TotO

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Re: 8-bit battles double dragon 2
« Reply #13 on: 11:47, 17 April 13 »
3.579545MHz is the carrier clock frequency for NTSC video. If the PCB uses divide by 4 circuitry it would use a 14.31818MHz crystal for the video instead. So if your board has a seperate 12MHz clock, then the video and CPU frequencies aren't coupled. The CPU could be running at anything up to 12MHz, you'd have to measure it to be sure.

Bryce.
Yes, it's what I will check first.
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