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tep392

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Posts posted by tep392

  3. Posted

    Back on topic, Curt, have you taken a blank board and installed nothing but the passthrough part on it? Just as a sanity check.

    Do you mean to check the cart passthrough works? He's been testing 7800 and 2600 carts on it and they do work. It actually has to have the PLD installed for that functionality to work because the A12, A14 and A15 lines don't pass directly from the console to the cart. They are routed thru the PLD so that it has the capability of disabling the cart while the BIOS runs. With no cartridge and just the XM installed, the console is getting to the rainbow fuji graphic, which means it is passing it's internal RAM and CPU tests, correctly identifies the BIOS chip as a cart and proceeds with the signature test. It then exits the signature test and crashes. This is the point were we don't know what is going on. The only circuits installed at this point are what is required to run the BIOS. Curt has been probing the signals and they look ok as far as we can tell. Mark is looking at it also and preparing some tests.

    • Like 2

  15. Posted

    :dunce: It's actually quite dumb. I didn't realize the ramdrive is D0: by default. In the past I've configured it as D8: using SDX on an atarimax cart. So I really had the drive configured the whole time.

     

    I figured out a way to flash SDX448 using my sdrive2 that's limited to 90k atr's. I split the 256k rom into 4 parts and put it on 4 atr's. I then copied the files to the ramdrive and put them back together. I was able to flash the u1mb from the file on the ramdrive. :) Hopefully the sdrive2 firmware get's updated someday to properly support large atr's.

    • Like 5

  18. Posted

     

    You can modify the SDX rom file using the Windows-only SDX Imager tool. Once you've modified the file, you can use Jon's UFLASH tool to re-flash the modified rom to the U1MB. The better solution is to use the option in his current BIOS versions to set CONFIG.SYS to whatever drive you want. I usually point mine to D5:. On my systems with a SIDE2 cart, that's the first partition on my CF card. Same thing with my current 1088XEL and XEL-CF adapter. The copy of CONFIG.SYS on D5: can be edited and saved as necessary.

    Thanks for the advice. I flashed the new BIOS but I think you are talking about changing the boot drive in the PBI menu. I don't have a PBI device. In fact, I don't have a way to load a file larger than 90K so I can't re-flash SDX with a modified config.sys. I'm an SDX novice though so I need help on how to boot with a config.sys on D1:, if that's even possible.

  20. Posted

    I wasn't sure where to post this question, but thought someone reading this would be able to help. I just installed a new U1MB in my 800XL and seems to work fine, other than I can't seem to see more than 4 banks available in SDX. The expanded RAM works because applications can use it, but I can't seem to get SDX to see it. The MEM command shows 4 banks available. I've tried every memory config from the configuration menu.

  21. Posted

    Hi, is there any progress regarding fixing DD support?

    The issue is likely to be caused by the fact that with DD disks, only first three sectors are 128 bytes long and the following ones are 256 bytes.

    I would like to see this as well. My sdrive2 is the only means I have of transfering files from my PC and it's tough being limited to 90K ATRs.

  23. Posted

    You have to wait until we are allowed to plead our case. No one knows when that will be

    My suggestion to everyone is to just keep an eye on this thread for updates from Curt. When he's ready to start that process, he will let everyone know. And based on the messages I have seen from Curt on the subject, I don't think any pleading will be necessary.

    • Like 8

  25. Posted

    Most, if not all, of the first 6 are going to developers/testers. There was some delay reported for the first 6 due to not having all the parts but they are now in process. There is testing that happens as the boards get built, so there could be additional delay's if debugging is needed during the build. Don't forget that these are the very first builds of this major design revision. Hopefully everything that was learned with the previous revisions will pay off and this will go smoothly.

    • Like 7
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