exxosuk Posted August 17, 2015 Share Posted August 17, 2015 http://www.exxoshost.co.uk/atari/last/16mhz/index.htm#AUG132015 As most know I am working with Rodolphe Pineau on various CPU booster designs. As we are working though problems one by one, I decided to create a development board to do testing on. This dev-board has dual TOS (104 & 206 by default). Most CPU signals are routed though a Atmel PLD so we can have full control over signals. A socket for a oscillator as we hope to go fully async to investigate higher than 32mhz speeds. All the address and data bus have optional pulls ups as loading the bus more is causing stability issues. All PLD signals (at least CPU lines) are routed via resistors to snub oscillating and bad signals. Across the front of the board is every IO pin so a Logic Analyser can be easily connected. Also it holds the V3 booster expansion header for future upgrades such as IDE , fast-ram etc. Ideally we want 32mhz ROM, CPU, FAST-RAM. According to some people 50-80mhz is possible out of the CPU. The PCB is about to go into production, so if anyone is interested in obtaining one of these dev-boards then now is the time to speak up. Then you basically come either a developer or a beta tester. This way you will be the first to try new features as they are developed and each new feature is free for you to program on your dev-system. You will also need a Atmel programmer to program the PLD. The price for the PCB only depends on how many people want one. Probably around $50 each. Most parts are generic such as resistors, PLCC sockets etc, but I can work on a price for other items another time if needed. 1 Quote Link to comment Share on other sites More sharing options...
guus.assmann Posted August 17, 2015 Share Posted August 17, 2015 Hello Exxoshost, Yes, I'm interested. But I do not have a lot of time yet. How is the connection between the board and the Atari done? What kind of programmer is needed? I've got a Hi-Lo ALL003 with DIL socket. BG/ Guus Assmann Quote Link to comment Share on other sites More sharing options...
exxosuk Posted August 17, 2015 Author Share Posted August 17, 2015 You would need a STFM, the booster plugs into the CPU socket. http://www.kanda.com/products/Kanda/ATDH1150USB-K.html This isn't going to be a quick project as myself and Rodolphe do this in our spare time. We mostly spend some time each day on this, but firmware takes much time to release. So would be some months between firmware updates as new features take time to develop & debug. Quote Link to comment Share on other sites More sharing options...
guus.assmann Posted August 18, 2015 Share Posted August 18, 2015 Hello, The computer is no problem. I have STFM, STE, Mega ST, Mega STE, TT and Falcon. (More than one of each) And Yes, I know the different CPU's in those. I also have some 68020 and 68030 chips. (Pins below the housing and ceramic package) Of course I do have some 68000 CPU's in DIL package. (Let me know if you need any chips. I will look into the programming part. If it's J-Tag, it's no problem and $53 is not so bad for buying one. I do have a good O-Scope but no logic analiser. BR/ Guus Quote Link to comment Share on other sites More sharing options...
exxosuk Posted August 18, 2015 Author Share Posted August 18, 2015 This board takes the PLCC 68000. Rodolphe is working on 020 booster but only so many hours in the day If you PM me with your email I will send invoice for the PCB. Parts are basic resistor arrays and PLCC sockets so can be obtained easy, though I can probably supply any parts you can't obtain anyway. Quote Link to comment Share on other sites More sharing options...
pixelmischief Posted August 19, 2015 Share Posted August 19, 2015 I'm definitely in to buy one. When/How do you want to do this? Quote Link to comment Share on other sites More sharing options...
exxosuk Posted August 19, 2015 Author Share Posted August 19, 2015 Deadline for these PCB's is Monday (24th ), thats when the order goes off. So if anyone wants to get one of these dev-system boards then send me a PM and I will send a paypal invoice. Also please say where you are in the world as postage will vary. Its a cheap way to get the latest boosters for a low cost, when the final boards go into production they will be built and assembled, and the cost will be a lot higher than the dev-system which is essentially the prototype of the final product. Please note you need a Atmel programmer and you will need to obtain parts and assemble it yourself. There is nothing SMT on this board, and all basically "off the shelf" parts. I will try and do a parts list tomorrow for it. Quote Link to comment Share on other sites More sharing options...
exxosuk Posted August 20, 2015 Author Share Posted August 20, 2015 1uf 2mm capacitors x 6 100uf 5mm capacitor x2 10k resistors x3 2x50 way 1.27mm header x1 AT27C4096-55ns x1 ATF1508AS-10AU PLCC84 x1 PLCC84 socket x1 PLCC44 socket x1 10K DIP resistor array isolated x8 10K sil resistor array bused x5 2.54mm header pins PLCC68 socket x1 PLCC 68000 CPU 16mhz I think that is pretty much the parts list. The ROM will need to be programmed, any good universal programmer should be able to program them. I will have a stock of most parts in the near future, so they can be obtained from me if needs be. I would also suggest the resistor arrays be put in sip/dip sockets/headers as they might need to be changed or removed depending on "unknowns" in the development phase. Quote Link to comment Share on other sites More sharing options...
exxosuk Posted August 24, 2015 Author Share Posted August 24, 2015 PCB order has been sent off Will be about a week while await for them to arrive. I will post assembly instructions on my site (probably have a new page just for developers or beta testers) with the various firmware updates as they happen. Initial firmware will be simply to prove the assembly and PLD programming is all good. So it should act like a stock machine. At least then everyone knows that is working stable before building in various updates like CPU boosting etc. Quote Link to comment Share on other sites More sharing options...
+poobah Posted August 24, 2015 Share Posted August 24, 2015 Will this work in a MegaST, or does it have to be an STfm? Quote Link to comment Share on other sites More sharing options...
exxosuk Posted August 25, 2015 Author Share Posted August 25, 2015 Will this work in a MegaST, or does it have to be an STfm? Its more the DIP socket which is the issues than the machine, so it would fit in a MEGA, its essentially same machine. Quote Link to comment Share on other sites More sharing options...
exxosuk Posted August 26, 2015 Author Share Posted August 26, 2015 Just got this image from PCB company, so just waiting for them to be shipped 2 Quote Link to comment Share on other sites More sharing options...
exxosuk Posted September 6, 2015 Author Share Posted September 6, 2015 Quote Link to comment Share on other sites More sharing options...
+DarkLord Posted September 6, 2015 Share Posted September 6, 2015 (edited) Pretty isn't it? (what does it say about us that we can look at an Atari related PCB and think that?) Edited September 6, 2015 by DarkLord 1 Quote Link to comment Share on other sites More sharing options...
+poobah Posted September 8, 2015 Share Posted September 8, 2015 any chance of some digikey part #s for the components? Quote Link to comment Share on other sites More sharing options...
Retrok7 Posted September 26, 2015 Share Posted September 26, 2015 Put my name down for one when it becomes available. Quote Link to comment Share on other sites More sharing options...
exxosuk Posted September 26, 2015 Author Share Posted September 26, 2015 The ordering for the boards was done about 3 weeks ago (have a look earlier in the thread) I do still have a couple of spare PCB's for anyone who wants one. Also I am only posting updates on AF as my time is somewhat limited lately. http://www.atari-forum.com/viewtopic.php?f=15&t=27088&p=280589#p280243 Quote Link to comment Share on other sites More sharing options...
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