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towmater

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Posts posted by towmater


  1. 1 hour ago, The Usotsuki said:

     

    That shows the location of the top of memory (usually 49152).

    It's 49152. I guess this is moot now, because I ordered a "Saturn Rocket 128K" card out of frustration. The strange thing, though is that I had been using the CFFA3000 without issue before adding the language card, and now that I have removed the language card the CFFA will not boot anymore, flashing "Requires 64K".  UPDATE: all of the stored settings in the CFFA went away for some reason, it works now.

     


  2. 6 hours ago, The Usotsuki said:

    ETA: Doesn't that card require one of the chips on the mobo to be moved to the card or something like that like the Apple card?

    Yes, it cleverly accesses address and data lines by hijacking one of the mobo ram chips. I will search around for a diagnostic program. I used a mini-pro to verify that all of the 74 logic is working properly, but I don't know for certain that the eight 8118 chips are all OK. Is there a simple way to print the memory size in Basic?

     


  3. Wanting to use the "greatest HD image ever" recently posted here, I found that I need to run ProDos to use HD images with a CFFA3000.

     

    No Problem, I thought, I'll add this Microsoft 16K "language card", however ProDos still complains that it wants 64K.

     

    Is this the wrong way to upgrade an A2+?

     

     

    2019-08-04 13.49.55.jpg

    2019-08-04 13.48.41.jpg


  4. On 7/31/2019 at 5:02 AM, R.Cade said:

    You download the binary package and burn them to EPROM.

    But you didn't link to a binary package. 

    "Again: There is still some "building" to do, no full, ready to burn, binary will be provided by me, but I've tried to make it as easy as possible for you to create one."

     

    (..except leaving it unclear how to build these.)


  5. On 6/20/2019 at 7:03 AM, --- Ω --- said:

    My hope is to swap out the VGA connector on the back of my TI with an HDMI one (using the adapter cable).  I know a quite a few of us mounted our F18A's the same way...

      

    One of the reasons I've decided to do no more case hacking, I did the dirty deed to my TI for the F18A, but when it came time to decide where to mount a DVI to a 1200XL I decided there was a good chance that the Sophia chip was probably not a "forever" solution and that I'd find a way to snake it through an existing opening. Not as neat, but not as destructive.

    • Like 1

  6. On 7/5/2019 at 8:36 AM, towmater said:

     I read that early ST's were not compatible with Gotek because of the floppy controller IC, but I thought this was solved by FlashFloppy?

    Actually OP was able to make it work with an original ST, so I am flummoxed. Can someone confirm the jumper settings on an ST Gotek? Right now I just have the drive 0 select jumper installed.


  7. 20 hours ago, towmater said:

    Any suggestions as to why the B: drive only shows as "0 bytes empty" no matter which SF file I choose on the Gotek?

     

    Out of frustration I moved the drive to inside the ST, and even tried going to HXC compatibility mode, still nothing shows up. I read that early ST's were not compatible with Gotek because of the floppy controller IC, but I thought this was solved by FlashFloppy?


  8. 2 hours ago, Forrest said:

    I was able to connect a 1040ST to a Sony KV-20XBR by building a cable that connected HSync and VSync using 2 resistors and 2 diodes. This information may be helpful to you. I've attached my instructions from 1987

     

    Thank you Forrest, although that circuit still left me with sporadic blanking, when I tried combining your circuit with the original TTL composite sync signal, I have been left with a stable image, so for now this iteration is the best image quality, I'll see how it holds up when I run some games through it.

     

    Not having to use a dedicated VGA monitor for the ST is a great advantage. Hopefully I'll be able to get this working with monochrome mode as well.


  9. I wasn't going to destroy a SF314 to make it a FlashFloppy, but since discovering that the previous owner had simply put a hacked 314 cover on an SF354, I went for it.  Any suggestions as to why the B: drive only shows as "0 bytes empty" no matter which SF file I choose on the Gotek?

    2019-07-04 11.33.11.jpg


  10. Since we are on the topic of Hyperkin HDMI convertor hacking... sort of, 

     

    Looking for clues inside the Hyperkin cable, I spotted this unpopulated trace. According to the manual "if the cable doesn't self power, use the supplied USB cable."  

     

    Without that diode, like Newman told Redford, "It ain't gonna happen."  The convenience of not needing a USB cable and wall-wart far outweighed the $29 risk, so I added the missing diode, and voilá, the thing is now self-powered. In order to use this with the ST, though, I'll need to drop the monitor port's available 12V to 5V using a regulator.

    2019-07-04 10.51.42.jpg

    2019-07-04 11.13.25.jpg

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