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Found 6 results

  1. This thread has been created for the brave who are embarking on this 1088XEL project alone. This is a place to share your updates, questions, and issues during the course of your journey. Some have already started as others will begin later. Please share what you have done, and anything else that can be of value to everyone completing this board. I have my boards from McRorie, my BOM components from Digi-Key (1 item on Back-Order), UAV Rev D from Bryan, Sophia Board (requires updating, U1MB board (Candle version), which requires an update from v1 to v2. I will be also completing several XEL-CF-][ and JOY2PIC-STIK as well. I will provide updates on those builds too. I will be using a Xytronic 137ESD Solder Station. For the solder I'm using .015 diameter low residue flux core solder with 2.2% flux. It is great to solder with especial with small boards and tight areas where a flux mess is not appreciated. Below, I have soldered the 24 CAP 0.1UF (digi-key 399-9870-1-ND). More to come..... Special Thanks to Michael St. Pierre (mytekcontrols) for which none of this would have been possible!!!
  2. If anyone has one they are willing to sell, please drop me a line. I haven't had much luck getting mine working. Everything seemed to be ok for a little while. 1UMB working correctly. Now I'm stuck with a dark-green screen upon startup. Nothing seems to change that. So I'm opting for a pre-built one if someone is willing to part with it. The more upgrades the better. Frank ------------------------------------------------------------------------------ UPDATE: I took my U1MB out of my 1200XL and put it in an 800xl. It worked fine. I reflashed it back to original (I had upgraded to the latest BIOS). Booted back up, was working normal. Plugged in back into my 1200XL and it started working fine. I think I'll wait on the new BIOS for the 1200XL's right now.
  3. Well it was only a matter of time before I did something monumentally stupid in this new year. But I certainly didn't think it would be so soon as in the first week. So what happened? Well I had removed one of my upgrade boards (GTIA V-Gate) that had a tied in connection to the U1MB that was also in the system. That tied in connection was to one of the control pins (S0) on the U1MB P4 header, so as to be able to enable/disable the V-Gate board via the U1MB Setup Menu. So here's the story... I had to assemble another GTIA V-Gate board and install it, since I had given my first one away. This was rather important since I now had most all of the U1MB's P2 header connections coming from the accessory support header (J1) on the V-Gate board (without this, the U1MB was dead in the water). The only problem was that I had used a 4-pin header connector for the auxiliary control header (J2) connection on V-Gate instead of the 6-pin that I was suppose to (didn't have a 6-pin connector at the time). So not paying attention, I plugged it in right next to the J1 header (only now offset by 2 pin positions to the right) which meant I had just connected the 'EN' line which was coming from the U1MB S0 control pin to VDD (+5 VDC). Needless to say what was connected to that control pin on the U1MB did not like that. So what was connected? The XILINX CPLD chip, which is the surface mount device with a bazillion very tiny pins on the bottom side of the U1MB board. When I powered up the system the XILINX chip got fried and began getting as hot as a pistol This remained true even after I removed the offending control pin connection, and unfortunately the U1MB board no longer works. Luckily I had a replacement U1MB waiting in the wings, and after updating it's firmware it runs like a champ. So let this be a warning to anyone connecting things to the control pins on a U1MB, be absolutely sure that you have not connected it to +5 VDC (or higher). Because if you do, you'll have a $60 paper weight to show for it - Michael
  4. I'm pleased to announce the release of the v.2.0 'alt' firmware for the Ultimate 1MB, Incognito, 1088XEL and SIDE/SIDE2. The update had been slated for release late in 2017, but the emergence of the 1088XEL and the requirement for custom U1MB firmware for the new motherboard heralded a prolonged period of firmware development and redesign for all supported devices. Since the 1088XEL's XEL-CF compact flash adapter can handle dual physical disks, I redesigned the U1MB PBI BIOS to accommodate primary and secondary devices, which in turn prompted significant alterations to the XEX loader. Many useful changes and augmentations were carried back to the 'standard' firmware builds (targeting the SIDE cartridge). Since releasing the 1088XEL U1MB firmware here a couple of weeks ago (which has been subject to a minor fix pertaining to DracOS compatibility since then), I realized that the SDX "soft drivers" (for SIDE, MYIDE, Colleen, etc, which hadn't been updated since 2014) could also benefit from some fixes and augmentations. Likewise the various APT tools (FDISK, ATRMNT, MOUNT, etc) on the 'toolkit' disk, many of which required amendments in order to work with the updated PBI BIOS. Then I remembered that the APT Toolkit manual and the APT API Programmer's documentation hadn't been updated in years either... It seemed imprudent to relase - say - the new SIDE/SIDE2 ROMs with old versions of the soft-drivers and outdated documentation, so the past couple of weeks have been spent on documentation and toolkit/driver updates. I finally started assembling the ROMs and ATRs a few days ago, and even this was a painstaking process. I closed my website down imagining that the site updates and media uploads would be completed within twenty-four hours... five days later, it was still closed. In any case, I completely underestimated the sheer volume of software, firmware and documentation, so I can only apologise to those who have recently been gently pestering me for the U1MB update via email. Many complain of poorly documented hardware and software products in the A8 community, so I hope the time I've spent on four fairly lengthy PDF manuals has not been wasted. Not everything is complete. The MYIDE SDX ROMs and drivers are not yet uploaded and many download sections have placeholders for the moment. But U1MB, Incognito, SIDE and 1088XEL owners may download the latest firmware and tools and consult freshly updated documentation: Download here: https://atari8.co.uk/firmware/ Installation instructions and readme files will be updated in due course. I reached the stage this evening where not uploading everything would delay release by another week or more. As usual, please use this thread to discuss any installation or usage issues. The updates to the SDX soft-drivers (SIDE.SYS, COLLEEN.SYS, etc) have not been subjected to testing by anyone but myself, so if any early adopters encounter problems, please let me know. Also released is the RAPIDISK driver (which allows faster HDD transfers at 20MHz) and Rapidus-specific BIOS plugins for U1MB (also on the 1088XEL). I hope to make some 'quick-start' videos and general guides over the coming days/weeks, but as usual it's all a question of available time.
  5. I've been thinking a little, and I think it would be fairly easy to build a RAM board for the atari 400/800 which would occupy the first RAM slot, have a ribbon cable run out to the 74LS42 address decoder, and provide 64K of RAM and the XL OS to the board. I think there would NOT need to be many soldered modifications, maybe to add a hard reset (or just modify the OS to detect the 400/800 NMI style reset). I would do my best to include a way to enable and disable the upgrade, so you can return to 400/800 mode and have all 4 joystick ports available for use, etc. The main purpose for this upgrade would be to put a U1MB into a 400 or 800, and plug it into this board. The existence of an MMU socket, a 28 pin style OSROM socket, and all of the other necesary signals pinned out for the U1MB (with the exception of /HALT which would require a connection to the CPU board I believe) would make the installation all but plug and play since all 400/800's are socketed. The only non-plug and play bit would be the soldered connection to /HALT on the ANTIC, I believe. In addition to providing U1MB connections, this upgrade could be used standalone as a 64K upgrade, just use an OSROM (would be provided) and an MMU (would probably be present on the board as a CPLD) and it works by itself. I was thinking I would do my best to keep the price below $50, though I suspect it'd be cheaper even (the concept itself isn't all that complex IMO, so I'd estimate $30 at the least). Of course, this is only checking interest, I'm not saying I will do this in quantity just yet, or that everything I said is even correct/that the concept is totally viable. EDIT: also, I know that the incognito is basically U1MB + SIDE converted for the 800. I know there are subtle differences in the software, like the U1MB stuff using a different key in place of help on the incognito. To that effect, hopefully Candle will helpful in this regard, and allow me to make some small changes to the U1MB firmware image to allow easy use with this board, which would have to be flashed into the U1MB once installed. I know this seems a lot like incognito, but the difference is that it also supports the 400. That was my original plan, to make it for the 400, but there's no reason it couldn't work in an 800, so I might as well support it. I don't mean this to compete with incognito, I want to make that clear. EDIT2: typo, there will NOT need to be many soldered modifications EDIT3: 400/800 use 74LS42 as address decoder, not 74LS138.
  6. Well, finally decided to upgrade my backup 1200xl to U1MB. Ordered from Lotharek (less than 2 weeks and it was here, he's definatley improved). Took my time installing (about 2 hours, checked and re-checked every wire and solder joint). However when it came time to turn it on... what I get is in the attached screenshot. No keypresses seem to have any affect (except Reset, which just brings back the same screen). Power cycling just brings the same. Did I screw up the install? Did I get a bad U1MB? Any quick fixes to get this thing going? I'm heart-sick that I may have destroyed my other 1200xl.
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