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Oric ATMOS

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look at this !

 

http://space1999.defence-force.org/

http://stormlord.defence-force.org/

http://1337.defence-force.org/

 

http://www.old-computers.com/museum/com … 9&st=1

 

this is 6502 computer with AY sound chip!

 

is there any ATMOS memory map where i can find how program AY,GFX,interrupts and IO in assembler?

find one, but there is only basic comands :/

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AY... *pukes*

 

BBC uses that chip too and its 6502 at 2 MHz (double ORIC's) supposedly doesn't suffer any DMA penalties so maybe it'd be a better experimentation foundation for that sound chip.

 

 

Possibly the best lead for getting some docs - found at the ORIC Wiki article: http://www.oric.org

 

Found another site: http://www.48katmos.freeuk.com/

Edited by Rybags

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AY... *pukes*

 

BBC uses that chip too and its 6502 at 2 MHz (double ORIC's) supposedly doesn't suffer any DMA penalties so maybe it'd be a better experimentation foundation for that sound chip.

 

 

Possibly the best lead for getting some docs - found at the ORIC Wiki article: http://www.oric.org

 

Found another site: http://www.48katmos.freeuk.com/

 

And the BBC Micro probably has the best implementation of basic of any 8 bit home computer in the world. I wish I could find one in the US.

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Yeah, it's pretty good (and fast). The OS is also fairly advanced and the machine's architecture well thought out in that you could have apps, utilities and the DFS (DOS) installed internally and they'd be banked in on demand and not hog much resources when not used.

 

The games... although it had better base graphics capabilities than most, ie double the bitdepth at 160, 320 resolutions and it could do 80-column (640) modes, the BBC was crippled in that 32K was the most common RAM config.

Also suffered in that it didn't have any hardware sprites or scrolling ability, although I believe VScrolling was possible via origin changes.

The other downside was that it only has 8 colours (the base RGB mixes), in modes where 16 colours are available the extra 8 are just 2 colours from the base 8 alternating under software control.

 

The 32K RAM left you with not a lot to play with. The disk drives were pretty quick too, fairly sure they used a similar philosophy to the ST/Amiga ie - disk controller onboard the computer, directly controlling the drives.

Edited by Rybags

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thank you all.

i think there is a chance to start ATMOS games on atari the same way as bbc micro (new interrupts & IO)

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cc65 has the Oric also as target. You could have a look into the library functions and memory definitions.

I'm sure Uz knows some resources for the Oric target too...

Edited by Irgendwer

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And the BBC Micro probably has the best implementation of basic of any 8 bit home computer in the world. I wish I could find one in the US.

 

I think the nearest you'll get to an NTSC one is Supergirl ;) :-

 

http://www.starringthecomputer.com/feature.php?f=396

 

There was a small run of the first units made for North America but it was recalled and they were all converted to UK units when they didn't sell. Somebody out there somewhere has one or knows someone who has one. It's just a matter of networking the right vintage computer sites to find that person. Shipping from the UK is astronomical and I would only resort to that as a last resort.

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AY... *pukes*

And the POKEY is sooooo superior. *pukes*

 

Depending on the AY Chip version and what type of music is used. If it comes to bass sounds, POKEY loses anyways. But the programmable waveforms seem to be endless with POKEY . Only SID can do better, when comparing common soundchips of the early 80s.

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Stormlord on the A8 would be really nice.

 

One thing to watch for is that the Oric version of Stormlord isn't a straight conversion, it's flick screen and uses different level layouts. It's still a good game (and as feckin' hard as the Spectrum original) but does play differently.

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AY... *pukes*

And the POKEY is sooooo superior. *pukes*

 

Depending on the AY Chip version and what type of music is used. If it comes to bass sounds, POKEY loses anyways. But the programmable waveforms seem to be endless with POKEY . Only SID can do better, when comparing common soundchips of the early 80s.

SID... *pukes*

 

:D

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AY... *pukes*

And the POKEY is sooooo superior. *pukes*

 

Depending on the AY Chip version and what type of music is used. If it comes to bass sounds, POKEY loses anyways. But the programmable waveforms seem to be endless with POKEY . Only SID can do better, when comparing common soundchips of the early 80s.

SID... *pukes*

 

:D

 

 

The SID chip rules. You have to applaud Commodore once in a while when they do good. It can't all be venom and vitriol.

Edited by OldAtarian

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