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sm3

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Posts posted by sm3

  2. Posted

    1050, I purchased a programmer from MCUmall in Canada specifically for this project (Newell OSN/Fastchip EPROM creation) and it was my first time burning an EPROM. It was a GQ-4X and supposedly with the external power adapter, it could do the 25V chips, although I'm having trouble finding where it said that now, since there is a new version of GQ-4X out. Maybe it was the programmer software that told me to connect the external adapter when I selected the type of chip I was trying to burn, I don't recall exactly.

     

    As far as the 2716 EPROMs I purchased, I have to locate them now ;) I kind of put all this away after my less than successul results with the intention of purchasing an OSN XL from B&C.

  5. Posted

    My guess is that it is a 28 pin 2764 EPROM (8K). I called Bruce at B&C and he said he does not know where they are, but he'll look. If he can find them I may buy one. Ideally, if he has several he could check the CRC checksum on them and if you get 3+ the same, it is still valid (i.e. not corrupt). The odds of two chips that have bit rotted having the same CRC are astronomical.

     

    Well, that's good, I've never actually spoken to him on the phone, I always just send an email. I'm not sure what kind of testing he does, but all the Atari parts he sells on eBay always says it has been tested.

  6. Posted

    I've gotten them from a variety of sources over the years, and some were in storage. Is it more likely that they may just need cleaned? All of them (as far as I remember) worked for a time, and then just stopped reading disks that they'd previously read.

     

    I'm going to try cleaning a couple of them tomorrow and see what happens.

     

    Yes, that would be a good first start in my opinion. Do you have any blanks? Have you tried formatting a disk and then reading it again? The 1571 is usually a pretty hardy drive, you don't see them fail like the 1541 did.

  8. Posted

    Ugh, bought it and got some terrible documentary movie too. I'm sure it'll be fixed soon.

     

    Well, I can vouch for the Vimeo version being correct. Fortunately Amazon is good about refunds, you have to figure out how to actually contact them to ask for the refund ;)

     

    The video was good, for what it was, but with nothing about the 400, 800 etc... I was looking for a refund button on Vimeo as well.

  9. Posted

    So in my hoard of Commodore stuff I have a total of 11 drives. Mostly 1541's, a couple modified, with a few 1571's. As of last night, all 11 of them no longer read disks. I'm not a big "open stuff up and fix it" guy, I tend to lose parts or forget how things went back together.

     

    I live in northwest Ohio, USA and travel for work a bit. I'd love to find someone who'd take my 11 drives, fix/align some of them, and keep the rest as payment. Failing that, I'd pay cash to have it done. Is anyone out there good at this and somewhat close to me?

     

    Thanks!

    Keith

     

     

    It seems odd that 11 drives, especially a 1571 are out of alignment. Are you sure it's not the disk you are trying to read in them that is bad?

     

    One thing to keep in mind, and I apologize if I'm stating the obvious, an out of alignment drive is only an issue if you are trying to read disks produced either commercially or from another drive.

     

    So even if you have one that is out of aligment, any disk it creates can still be read by that drive. Of course that doesn't help if you have a disk you're trying to load that wasn't created by that drive. You can always buy an SD card device and download D64s from your PC to use them or get an EZ flash.

     

    As far as alignment goes, there are plenty of books on the DLH website, bombjack.org that might assist you. Of course I would not say it's super easy, especially if you don't have any experience doing this kind of stuff.

     

    http://www.bombjack.org/commodore/books.htm

     

    http://store.go4retro.com/

  10. Posted

    Well, it's been almost 2 years. In that time I haven't noticed any Newell boards with OSN or the Fastchip until last week (I think it was). I believe one was being sold by someone from atariage along with an 800 and then there was a separate Fastchip by itself.

     

    I missed out on both of those. My offer still stands of course, I will pay cash or cash + trade (I have 3 unused Incognito) for an original OSN and a Fastchip or any combination.

     

    I was going to just cut my losses and buy an OSNXL and Omnview for my XL from B&C but haven't yet.

     

    1050, I was a little confused about the instructions in your other thread and didn't want to derail that one with talk about the Fastchip. Last time we talked about the Fastchip you mentioned a hardware modification to make a standard EPROM work. That was not something I wanted to try of course. Sounds like you have come up with a different way now?

  21. Posted

    A few additional things to mention:

     

    If you want a new SID or 2 (since the MK2 has slots for stereo SID support), he still has them in stock for sale with the Reloaded board but does not sell them separately of course.

     

    If you purchased a power supply for the first version of the board, that will still work with the MK2, however, he has a new PSU in development for the MK2 and it will come with adapters for each country. I had to purchase a travel adapter separately for my original supply since I live in the US. The power supply is an additional cost of course to the Reloaded MK2.

  23. Posted

    40 is the new 30. :)

     

    Incidentally, I actually just took down my Model I setup from the retro-computer desk in my game room a couple days ago, possibly on the 3rd, actually... :ponder: :| (Hey, I didn't know! :P)

     

    (In case anybody's wondering, I took it down--after being set up for at least a couple of years--to make room for an Apple IIgs rig I got back in October and never really even set up yet. Found out the 3.5" drive I got for it doesn't seem to work, so serves me right, I guess. :P :-D That RGB monitor, tho... :love: )

     

    I often swap out my vintage systems as well having more of them than space to set them up ;)

     

    I have never used an Apple IIgs but I do get tempted now and then to pick one up.

  25. Posted

    Quick question.... How do you switch between JiffyDos and stock kernel under Vice? Real hardware is a switch, but how do you do it under Vice?

     

     

    While I don't use JiffyDos myself from within WinVICE, I do believe you can change the drive and kernal ROMs within VICE by hitting the F12 key, and making some selections. I'm basing this off the SDL version of WinVICE which I use with Windows 10.

     

    When you press F12, you get a text window that appears and allows you to make changes. Of course JiffyDos isn't included, so you'll have to obtain the ROMs elsewhere.

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