kenjennings Posted April 20, 2014 Share Posted April 20, 2014 Curt said we could get the PCB's reproduced at a cost around $100 each. I'd still buy another at that cost If that's the deal, I'd get one. Quote Link to comment Share on other sites More sharing options...
AtariGeezer Posted April 20, 2014 Share Posted April 20, 2014 Well, Corey and I are working on the bottom case and side piece, once he's got them into CAD format, I'll see what kind of costs some tooling will be based on the IGS files and we'll go from there, the Mobo's shouldn't be too crazy to have a run done, first I need to get a firm that still works with films to scan them in and generate some gerber files and then we'll see what it'll cost to run a 4 layer board, its pretty big, so I would assume it's gonna be pricey, but we'll see, I may have to bite the bullet on the PCB's and look to have them down over in China due to cost, but if I do that, it's the difference between them costing $100 and costing maybe $20, so again we'll see... first things first, lets get the files made.... I need more hours in a day, 24 just ain't enough! Any new news on this Curt? Quote Link to comment Share on other sites More sharing options...
Theoryman Posted April 28, 2014 Share Posted April 28, 2014 I would be interested in buying a board myself, or, failing that, I'd pay for a copy of the layer films to be made and go from there. Or maybe high-res scans of the films $100 for a board is not out of line to me... -- Quote Link to comment Share on other sites More sharing options...
ACML Posted April 29, 2014 Share Posted April 29, 2014 I guess the 1200XL is as close as most of us will come to the Ultimate Atari 8-bit. Quote Link to comment Share on other sites More sharing options...
flashjazzcat Posted April 29, 2014 Share Posted April 29, 2014 I guess the 1200XL is as close as most of us will come to the Ultimate Atari 8-bit. An advantage of the 1200XL is that it's not so absolutely priceless (yet) as to prohibit upgrades, so you can have a machine which looks as good as a 1400XL, but is more powerful. Quote Link to comment Share on other sites More sharing options...
Tempest Posted April 29, 2014 Share Posted April 29, 2014 An advantage of the 1200XL is that it's not so absolutely priceless (yet) as to prohibit upgrades, so you can have a machine which looks as good as a 1400XL, but is more powerful. I have a very heavily modded 1200XL that I used until I got my 800 upgraded with Incognito. I still waffle back and forth as to which one to use. Even though my 800 is now more powerful than my 1200XL (having a built in SIDE loaded and more OS/memory configurations), there's just something sexy about the 1200XL. 1 Quote Link to comment Share on other sites More sharing options...
flashjazzcat Posted April 29, 2014 Share Posted April 29, 2014 Even though my 800 is now more powerful than my 1200XL (having a built in SIDE loaded and more OS/memory configurations), there's just something sexy about the 1200XL. Totally agree. This very thread was the inspiration behind the modding I did to my 1200XL, which I hadn't really known what to do with having finally obtained it. I called it "The poor man's 1400XL" when I started blogging about it, and it's now by far the most powerful A8 I own (U1MB, VBXE, Stereo, PAL, internal IDEa with custom APT BIOS, widened cart tunnel for SIDE2). I seriously doubt I'd have wanted to perform such modifications on a 1400XL. I just fitted the NOS keyboard I've had in the cupboard for a couple of years, too, so now all the console keys are extra shiny. Quote Link to comment Share on other sites More sharing options...
Theoryman Posted April 29, 2014 Share Posted April 29, 2014 I want a 1450XLD board to start from. I hacked all my Atari gear to do more... I would have replaced the 300baud modem with plugin card to make a 28.8kbaud or more by the mid 90's I'd have likely done at least 320kbyte memory upgrade. Expect it would have had a PBI HD inside by now as well. As I'm pretty much retired now, I've dug all my Atari stuff that was in storage out and am now looking for new things to try. -- 1 Quote Link to comment Share on other sites More sharing options...
Tempest Posted April 29, 2014 Share Posted April 29, 2014 I actually have a 1400XL board I got from Best years ago. How hard is it to make one of these into an honest to goodness 1400XL? I imagine some of the parts are getting hard to find. Then again, what does a 1400XL offer over a 1200XL other than a built in modem, voice synth, and some other stuff like a PEB (already have it), and FREDDY chip (not particularly useful)? EDIT: Well what do you know, looking at it again it's actually a 1450 motherboard. It says: ATL V-0 C024355-001 REV X2 Copyright 1983 Atari I imagine making a 1450XLD would be super tough because of the missing required daughter board. Still, a guy can dream I guess. 1 Quote Link to comment Share on other sites More sharing options...
Theoryman Posted April 30, 2014 Share Posted April 30, 2014 I expect it would be a great build and a fair amount of work... Then likely finding a set of 1200xl plastics to build a case from. But what I want to do with it is build it into the system that Atari should have released to us in the mid 80's Freddy with 64K main, 256K/512K banked. No built in BASIC. 65816 CPU on a daughterboard with 1M/2M fast RAM in high pages for the 16bit mode. Upgradable. Maybe some OS ROM up there as well The PBI floppy controller should be based around a WD1772 FDC with it's own RAM and a small CPU. 6507 or maybe a 6800 or 6809. Were there smaller address buss versions of those? Bootstrap ROM, 6K of RAM plus hardware mapping would easily fit in the 6507 address space. Upgrade the modem with a daughterboard. At least 9600baud, but I can see going faster. Maybe another 6507 to run the modem. Instead of loading everything on the CPU, play to Atari strong point... Multi-Proccessing. ANTIC is a second CPU. Why not more? Backwards compatable... OS must run properly written XL/XE software without mods. Should run most 400/800 as well. Want to sell? :evil: -- Quote Link to comment Share on other sites More sharing options...
AtariGeezer Posted June 10, 2014 Share Posted June 10, 2014 In case others haven't seen it, there's a 1450 mobo for sale in the marketplace : http://atariage.com/forums/topic/226216-atari-8-bit-hardware-for-sale/?do=findComment&comment=3005627 I don't think I'll be able to afford to buy it myself, but maybe someone else here that has shown interest in building one can have a chance to build it up... Quote Link to comment Share on other sites More sharing options...
AtariGeezer Posted January 16, 2015 Share Posted January 16, 2015 Any build updates from the 2 guys who bought boards from Tempest and Bob1200XL in the last few months or others still building theirs, but haven't reported in months??? 1 Quote Link to comment Share on other sites More sharing options...
Shawn Jefferson Posted January 17, 2015 Share Posted January 17, 2015 I'm still halfway through... put the project away and haven't got back to it yet. I also need to do another part order to get the rest of the parts I need (mainly chip sockets.) 1 Quote Link to comment Share on other sites More sharing options...
mr-atari Posted January 17, 2015 Share Posted January 17, 2015 I have a bare PCB too, but not having plans to build it from scratch. Was a Christmas present and/or trade with Curt many many years ago :-) Perhaps we can rebuild the PDD in future too. Later! 1 Quote Link to comment Share on other sites More sharing options...
AtariGeezer Posted May 7, 2017 Share Posted May 7, 2017 Anyone see this before? 6 Quote Link to comment Share on other sites More sharing options...
towmater Posted May 9, 2017 Share Posted May 9, 2017 Fred Rated used to sell them in LA. 1 Quote Link to comment Share on other sites More sharing options...
Shawn Jefferson Posted February 23, 2021 Share Posted February 23, 2021 Hi All, I finally got back to this project that was almost done, and got the handler EPROM and the PAL 'C' chip burned and populated (the last chips I needed) and built a power supply from an old PC ATX power supply. However, turned it on with great trepidation... and got just a black screen. I am getting the correct voltages on the motherboard I believe. What I suspect, and pretty much expected, is that I don't think I have the correct PAL 'A' chip. I ordered this from Best Electronics years and years ago, I don't think I was actually sent the correct part. It's a PAL16L8, but does not have the C061919 label, it's labeled with C080509 or C080609, its very hard to read as it's quite small and not very clear. Can anyone send me the JEDEC file for the PAL 'A' U12 chip from their 1450XL? Hopefully that will be all the issue is for this board. *fingers crossed* 1 1 Quote Link to comment Share on other sites More sharing options...
AtariGeezer Posted February 25, 2021 Share Posted February 25, 2021 C080509 or C080609 doesn't come up on a google search. Haven't seen a JEDEC file for the PAL 'A' U12 chip. Can you take a pic of the one from Best Electronics? Quote Link to comment Share on other sites More sharing options...
Shawn Jefferson Posted February 27, 2021 Share Posted February 27, 2021 (edited) On 2/24/2021 at 9:46 PM, AtariGeezer said: C080509 or C080609 doesn't come up on a google search. Haven't seen a JEDEC file for the PAL 'A' U12 chip. Can you take a pic of the one from Best Electronics? I took a picture and attached it here. I was hoping someone who has a working one could dump it, especially if the files don't exist somewhere on-line already. Looking over at Atari Museum, is this the chip description: http://www.atarimuseum.com/computers/8bits/xl/1450xld/1450XLD_GATE_ARRAY-BARBARA.pdf Edited February 27, 2021 by Shawn Jefferson Quote Link to comment Share on other sites More sharing options...
+kheller2 Posted February 28, 2021 Share Posted February 28, 2021 Barbara was for the TONG motherboard version of the 1450XLD from 1984. You probably want these 3 Quote Link to comment Share on other sites More sharing options...
Shawn Jefferson Posted March 1, 2021 Share Posted March 1, 2021 On 2/27/2021 at 7:37 PM, kheller2 said: Barbara was for the TONG motherboard version of the 1450XLD from 1984. You probably want these I wonder... as these boards are the 1450 boards that were created later on. Hopefully this is the correct equations, and I guess I'll have to try and figure out how to program a chip with these then. Hoping someone with a working 1450 board may dump the chip for me, as at least we know that it will be correct in that case! Quote Link to comment Share on other sites More sharing options...
+kheller2 Posted March 1, 2021 Share Posted March 1, 2021 12 minutes ago, Shawn Jefferson said: I wonder... as these boards are the 1450 boards that were created later on. Hopefully this is the correct equations, and I guess I'll have to try and figure out how to program a chip with these then. Hoping someone with a working 1450 board may dump the chip for me, as at least we know that it will be correct in that case! Bob dumped one of them here: Quote Link to comment Share on other sites More sharing options...
Shawn Jefferson Posted March 1, 2021 Share Posted March 1, 2021 20 minutes ago, kheller2 said: Bob dumped one of them here: Yes, I needed that one as well (U11), and had someone burn that to a PAL chip for me already. Quote Link to comment Share on other sites More sharing options...
AtariGeezer Posted March 3, 2021 Share Posted March 3, 2021 On 3/1/2021 at 2:47 PM, Shawn Jefferson said: Hoping someone with a working 1450 board may dump the chip for me, as at least we know that it will be correct in that case! I do have a working chip in my build, but no way to read it... Quote Link to comment Share on other sites More sharing options...
Shawn Jefferson Posted March 22, 2021 Share Posted March 22, 2021 On 2/27/2021 at 12:55 AM, Shawn Jefferson said: I took a picture and attached it here. I was hoping someone who has a working one could dump it, especially if the files don't exist somewhere on-line already. Looking over at Atari Museum, is this the chip description: http://www.atarimuseum.com/computers/8bits/xl/1450xld/1450XLD_GATE_ARRAY-BARBARA.pdf This chip is the CO60609 (1200XL MMU) I found out. The writing is very small and blurred, so hard to tell, but I have verified that now. It's definitely not the PAL A chip that I need. I have been doing some research into these PAL chips, and working on getting them built from the equations. I will start a new thread for that, as there's a few interesting things there. I still need PAL A, and now I've discovered that I also need PAL C made properly, as the one I had programmed doesn't seem to be correct. I was able to verify my PAL B is correct though. Quote Link to comment Share on other sites More sharing options...
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