24 of April. AtmoStrat was born

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jorodr
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24 of April. AtmoStrat was born

Post by jorodr » Sat Apr 25, 2015 7:50 am

Hello Oric World.

I'm new Oric baby.
I have 4 modes to work - Oric 1, Oric Atmos, Oric Telstrat (HyperBasic), Oric Telestrat (TeleAss).
I have 16-bit heart - 65C816 and 64K Ram.
Maybe I will have SVideo and composite outputs these days.

I hope you will like me :)

Best regards,
AtmoStrat
Attachments
P1210390.JPG
P1210385.JPG
P1210382.JPG
Last edited by jorodr on Sat Apr 25, 2015 11:25 am, edited 1 time in total.

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iss
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Re: 24 of April. AtmoStrat was born

Post by iss » Sat Apr 25, 2015 8:08 am

Congratulations, jorodr!
AtmoStrat rev.0.2 looks really great. I'm looking forward for (at least) one of these jewels. ;)

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Re: 24 of April. AtmoStrat was born

Post by ibisum » Sat Apr 25, 2015 9:03 am

Beautiful! I'll take 2! No, 3! :)

(Wondering what to do with my old Telestrat now..)

BTW, I don't see MIDI on that prototype! :P

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Re: 24 of April. AtmoStrat was born

Post by Symoon » Sat Apr 25, 2015 9:31 am

Looks very interesting, especially if there's a "modern" way to plug it on a screen (seems like SCART is going to die). You hardware guys rock!
ibisum wrote:BTW, I don't see MIDI on that prototype! :P
I was about to ask if the power plug shouldn't be moved somewhere else, but it looks like the board is designed to fit in existing Orics :)

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Chema
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Re: 24 of April. AtmoStrat was born

Post by Chema » Sat Apr 25, 2015 11:20 am

Amazing! :O

Incredible work! Please give us more details....

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Re: 24 of April. AtmoStrat was born

Post by jorodr » Sat Apr 25, 2015 11:33 am

The idea is just to replace the Atmos board with AtmoStrat board and use HuperBasic compiler. 16-bit processor is extra, but unfortunately it don't work with Dos 8D, just with Oric Dos / Sedoric / StratSed. There is no place for MIDI. You just must change 9V PSU with 5V PSU. I hope these are good news for everyone who like to write software for Oric.

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iss
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Re: 24 of April. AtmoStrat was born

Post by iss » Sat Apr 25, 2015 12:29 pm

About Dos-8D: as I already promised you - I'll replace all 'invalid' cpu instructions, so it will work.
About MIDI: especially for ibisum(!) I foresee to include MIDI support too in my project code name "Oric Communicator". It's work in progress.
And again, well done, jorodr!

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coco.oric
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Re: 24 of April. AtmoStrat was born

Post by coco.oric » Sat Apr 25, 2015 12:40 pm

These are very good news.
Please give us more details and the ability to join the atmostrat community
coco.oric as DidierV, CEO Member
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Re: 24 of April. AtmoStrat was born

Post by Dbug » Sat Apr 25, 2015 2:46 pm

Regarding the 65816, is there a 1mhz compatibility mode and why not more than 64k?

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Re: 24 of April. AtmoStrat was born

Post by Godzil » Sat Apr 25, 2015 2:53 pm

Even if adding a 7805 is cheap to support PSU higher than 5V, you must put a diode on the power supply or lots of these board will die unhappy with a reverse polarity :/

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Re: 24 of April. AtmoStrat was born

Post by jorodr » Sat Apr 25, 2015 2:57 pm

The computer is running only in 1 MHz. It's not faster than Atmos and Telestrat and is 100% compatible, just have extended optcodes and address modes. It is useful for that who loves to write in assembler language. I hope there will be interested to find some useful 65C816 cross-assembler. I'm working on to add 64K extra, but it seems it's not easy because of the ULA. Will know soon.

About 7805 - I have replaced it because of the room and because there is a lot of modern 5V PSU-s on the market. I have bought mine PSU adapter a hour before turning on the computer. About the diode - it's not a bad idea, thanks :) I accept every good idea! :)
Last edited by jorodr on Sat Apr 25, 2015 3:10 pm, edited 1 time in total.

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Re: 24 of April. AtmoStrat was born

Post by astrofra » Sat Apr 25, 2015 3:06 pm

'Looks incredibly clean. Congrats for this achievement. :o

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Re: 24 of April. AtmoStrat was born

Post by Godzil » Sat Apr 25, 2015 3:09 pm

BTW why have you kept the original oric layout? I mean the OpAmp on the 1/Atmos is really badly placed and should be closer to the PSG

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Re: 24 of April. AtmoStrat was born

Post by jorodr » Sat Apr 25, 2015 3:15 pm

Godzil wrote:
Post Posted: Sat Apr 25, 2015 3:09 pm
BTW why have you kept the original oric layout? I mean the OpAmp on the 1/Atmos is really badly placed and should be closer to the PSG
I want to keep the max of the Oric spirit and to fit in original Atmos case. Thanks to a friend of mine I have empty Pravetz 8D board and I did a lot of work to capture the schematics from. Then I routed the board following the original. You could see the pictures of the first version of the board with 6502 and 65C816 extension. I wanted to avoid the risk on failure.
Thanks to Fabrice and with his modified Telestrat ROMs was born the idea to make it Telestrat compatible. I have a lot of ideas more, but don't want to talk before to try them :) Let me try SVideo out first...
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Re: 24 of April. AtmoStrat was born

Post by kenneth » Sat Apr 25, 2015 7:13 pm

Nice ! :shock:

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