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Technoid Mutant

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About Technoid Mutant

  • Rank
    Star Raider
  • Birthday 06/12/1970

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  • Custom Status
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  • Location
    Miami, Florida, U.S. of A.
  • Interests
    Atari 8-bit computers, Vintage computers, Operating Systems,
  • Currently Playing
    Installing and updating Antonia board (Altera code update), installing and updating a U1Mb (Xilinix code update), building a lot of ten 512k ram upgrade boards for the Atari 800, generally having fun. Playing Gauntletak a little
  • Playing Next
    Burning a new rom for my broken 850 in hopes that's the problem, building a US Doubler for my stock 1050, building a couple of 512k ram upgrades for 800xl machines.

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  1. Thank you thank you! The micromatch connector came today and is now installed on the Antonia. The ribbon cable connector is on the way and will be here shortly and then I'm on the way to flashing this badboy. I'll let you know. I can't wait to get it working with the Side2 cart. Best, Jeff
  2. Well, I solved it. After socketing every glue chip on the board, plus the mmu, I started on the ram. It was either u9 or u10, 4164. One of the chips is bad, and it occupied one of these two positions. So those two chips are socketed now, with the bad chip replaced from my stock. The machine works perfectly as a 64k 800xl again. What an interesting fault that was. Whoever mentioned a stuck bit is probably right. Anyone know why this machine has, from the factory, the trace cut on pin 2 on each dram and a 100ohm resistor substituted for it? ** TNM **
  3. I went to Drac's website and there's no download for the Ant800xl.pol file referenced here in AtariAge. I need this code to run through my USB blaster to update a brand-new but only recently unboxed and installed Antonia. The Antonia is from the first run which will not recognize the Side2 cart. If you have a recent version of this Altera firmware, please link me to it. Thanks, Jeff
  4. An update on the 512k ram boards for the Atari 800. I just got the 74F138 chips in today, got the capacitors the other day. All but the 138's and the ram chips are installed on the boards already. When the rams come in, which might be tomorrow but very likely Monday, they are in Orlando now, I will stick them in the boards and start testing. Cross your fingers everyone. I really want this to work the first try. 🙂
  5. I've been a computer tech for a few years. 🙂 In the early 90's I saw my first CPU with a Fan on top and I just burst out laughing. I wasn't mocking it, it just came as a surprise and my usual reaction in cases like that is laughter. I'd worked with computers for more than a decade by that time and not one even had a heat sink on it, much less a FAN. I think the processor that got the giggle was a 486dx50, maybe a dx266. Of course for ever and ever there have been various active cooling systems for supercomputers and the like, but on the bench? I was really taken aback. Anyway I thought I'd share.
  6. OMFG I killed the board. I had to hook up my Microscope to fix a couple of traces I'd trashed with my desoldering iron. It's back up now, with a nice little bandaid of a jumper wire. ** TNM **
  7. Now that I try, the socket header it uses is too close to the pins on the rom for me to get my iron onto the pins. I'm gonna bag it. Too much trouble. Unless the rom is really needed for someone. ** TNM **
  8. Gimme a half an hour. I gotta let my desoldering iron heat up. The rom is not socketed. BRB ** TNM **
  9. Says it isn't a happy. Initially, when you load the happy software it does, but when you do diags it barfs and says the drive is not a happy. ** TNM **
  10. I've got a board in a 1050 that isn't a happy but acts like one, has a track buffer. The RPM utilities I have say it is going 800rpm while the disk is stationary. :-))) But I'd like to RPM the drive for real since it has been in storage. The thing is, it isn't an archiver, it isn't a Speedy, I don't think, and it isn't a Happy. What is it? On the Board, in teensy letters it says "ME1050F" and "(c) 1985 HCI" Anyone know what upgrade board this is and what utilities I might use to Unhappy it for a little so I can rpm it properly? Basically I'd like the utility disk that came with the mod. RSVP YHOSvt. ** TNM **
  11. Ah Ha! Thanks guys. I DID lift the rearward legs of the ferrite cores and solder the uav output directly to the pads thus vacated. I'll put those legs back in, lift the ones nearer the uav and solder my wires to those lifted legs of the cores and see if I get improvement. It is pretty good as it is. Best, Jeff
  12. I just got my burner today, and got to try it out. I failed with the 28c16 because 9 out of 10 chips I got were unprogrammable. Not my fault. One of them works always and the others fail always... When I ordered the burner I also ordered some Winbond W27e512-70 eeproms, because the 27e128's basically are unobtainable. I was thinking that I might manipulate them into acting as os roms for my XL. I read the Atari rom into the buffer with the burner set to 27512 and then wrote the resulting data into a 27512 rom. The rom works with no manipulation at all. Since I read the original rom as a 512, it seems it got the layout correct and I have a copy of my Atari rom running in my XL right now. It has been playing demos for the evening. This is good news for us! It means we don't have to use UV erasers and eproms for this, the 512k chips work! My burner setup is a TL866cs USB burner running under Linux in a virtual machine running windows 10 enterprise and the Minipro 6.85 software package. My virtual machine is KVM (qemu) managed by Virtmanager. Fun fun fun! I have adapters for various common flash and eeprom chips on the way. Wish me luck! ** TNM ** /s
  13. It looks like out of my ten 28c16's I got one good one. You are right about it freaking the 800 out. The chip programs and verifies and the Atari boots, but it freaks Pokey out something fierce. Keyboard is wild, and sio is broken. The strange thing is that while trying this out and verifying that my rom was bad (the original), I tried the cart with no math rom installed at all. The machine works fine until you call on the mathpack, which is surprisingly infrequent. It took me a while to find something that wouldn't run, finally I put BasicXL on my cart and loaded that, thinking I'd do a ?sin(x) and test the floating point that way. BXL will bomb at the Ready prompt and not accept any input without the chip installed, so there's a test for you. If you install a good chip it works just fine and of course returns valid output for Sin(X). I just got my burner today. Woot! ** TNM **
  14. Years ago when I ran Cheez Daddy's House of Funk, I had a MUX with a 30 foot (!), yes, it worked, cable connecting my three Ataris. For years afterwards I had the Mux os in my machines and really got used to being able to turn the video dma (screen disable) off and on with the key combination shift+ctrl+8. I miss that and was looking for a copy of the rom and it is nowhere to be found. Is this out there somewhere I missed or is it still a closely held thing? If it is still proprietary, is there a rom that has this function that isn't? Best, Jeff
  15. I occurs to me that I could restore the U1mb to operation, albeit without the updated firmware by pulling the flash rom, installing it in MY U1mb, which is brand new, flashing the chip with the OLD rom, and putting that back in the old U1mb. When the burners get here, I can flash the chips. Best, Jeff
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