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Larry

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Posts posted by Larry


  1. Found the listing in the PDF of ST-LOG #32 at Atarimania.  Looks pretty simple to model a BASIC XE  (or Turbo BASIC XL) program after it using the XOR function in either of those languages. Thanks for the suggestions and especially Rybags with the XOR suggestion (since it is easy to incorporate into a BASIC program). Interestingly, the example of using XOR in the Basic XE manual is wrong! Says

    5 % 39 = 32 and is actually 34.


  2. Here was one written for Analog's ST-LOG:

     

    https://www.atarimagazines.com/st-log/issue33/66_1_UTILITY_SAFE_KEEPING.php

     

    I don't see a listing, but I think I should be able to find it somewhere.  It's written in Pascal, so that is a "Plus" in that it is generally much easier for me to figure out than C.

     

    I'm going to look at the other platforms.  I seem to remember a couple of others that I ran across over the years.

    • Like 1

  3. I typed "encryption" in the search window here at AA, and got 2500+ hits, so I won't be looking through those.

     

    So, does anyone know of any simple encryption programs for the Atari 8-bit?  I wrote one in BASIC back in the 80's that would take a key phrase and encrypt a file based on that key.  Something that would take the NSA about .02 seconds to crack with their hardware.  But I can't find that program anymore.  Anyone have or know of one? 

     

    -Larry


  4. " The Atari was absolutely amazing for its time, and it managed to do a good job of holding its own (and sometimes surpassing) the newer machines that came later ... but the genius of its design can only do so much against the march of technology."  Well stated!

     

    One could make some fairly simple assembler benchmark(s) to measure the processing power.  Much of the code should be interchangeable. You could add or subtract the display and other major individual features like disk access to get an idea of the overall processing from a particular machine.  OTOH, seems like a whole lot of trouble, plus then you have the issue of "original design" vs "improvements."  Many Atari folks would like to ignore the original Atari 8K BASIC, slow floating point, and even slow I/O. But that's what they came with.

     

    -Larry

    • Thanks 1

  5. I briefly scanned this thread (again) and didn't see anything about using it with an emulator.  Could Altirra be revised slightly to accept the keyboard input from a real Atari?  That would be wonderful! Retro Pie? MIST? etc.  Looks like there could be several retro uses for such a device.

     

     


  6. O.P.: It is pretty unlikely that you will ever see an Atari equivalent to the Maxi or even Mini due to the economics (as others have said). I think that the closest you'll come is our Atari FPGA versions (eclaire XL or MIST or MISTer).  These are essentially hardware emulators rather than software emulators. And they do a very good job, overall. The 1088XL certainly is a full-featured modern Atari, but you declined the DIY versions. (I certainly understand the reluctance for the most users to take on such a complicated project!) And the price for a "pretty darned close" C64 maxi of less than 150 Euros!  Wow! Priced right!  And with that you get some very good games! I think they will sell a bunch of them, and continue to fuel the retro boomlet.

     

    I don't have a C64 Maxi, but I think it falls a little bit short of providing a full retro experience.  But it does have a serious advantage of having a full, cloned C64 keyboard. All of the alternatives that use a PC keyboard are lacking in usability (again, IMO).  Our Altirra (PC-based) emulator is a true wonder of emulation, but it still suffers from the keyboard issue. Hopefully we will have the ability at some point to use a real Atari keyboard with the eclaire XL. Part of the retro experience is also using the older peripherals.  I'm pretty sure that you cannot use a real 1541 or other C64 retro peripherals with the Maxi.  You can use disk images, which is pretty close. Perhaps with the yet to be released MEGA65? AFAIK, the eclaire XL is unique in this respect. 

     

     

     

     

     

     


  7. Congrats!  Now I have my first request... I dropped my ABBUC membership this year because there is little to nothing in English anymore.  At one time, the monthly mags were translated to English and we were able to download the translations.  I understand that ABBUC lost the resource for translations, but perhaps you could look into getting this going again?  Google translations just won't cut it for the typical English-speaker, and even with my 3 years of high school German (50+ years ago), it just doesn't work well. I'm sure it is a drudge to translate stuff, but have you considered paying someone?  I'd certainly pay extra on the membership to get stuff that I could understand.  "An English Surcharge" Anyhow, food for thought.

    Thanks,

    Larry

    • Like 4

  8. "But one thing that could work is to just quote everything on a page then block copy it to your Word document.  A bit dirty but might be sufficient."

     

    That's a good idea!  And that way, I can easily edit out OT replies. I didn't know you could do multiple quotes.

     

    Had not heard of HTTrack.  I'll check that out.


  9. There are several threads here that have some really valuable technical information that I'd like to have handy.  I currently (sort of) have them organized by copying the links, and the links are organized by broad topic. Is there a way to copy the entire contents of a thread (and paste into a WP)?  I know that I can copy/paste each individual post, but that is a real drag. Any thoughts?

     

    -Larry

    • Like 1

  10. The Black Patch Sector Copier from CSS suggested that a sector copier should  write out whatever it read, even if the read was an error sector.  It claimed that many more disks having bad sectors could be successfully copied by doing this. (YMMV) The whole idea of the "Black Patch" was make a copy of everything it could, then to re-write/bypass copy protection, similar to the Chipmunk.

     

     

     

    • Like 1

  11. Here's what I've found (and at this point 5 years later, I can't say that I understand all that is shown in the docs): 

     

    Switches 1....2....3 (reading from the label)

    1. Down Down Down shows 64K on XRam (64 base + 64)

    2. Up Down Down shows 256K on Xram (64 + 256)

    3. Down Up Down shows 64K on XRam (64 + 64)

    4. Up Up Down shows 512K on XRam (64 + 512)

    Note that in the above that the remap is set to OFF.

     

    Both of the Ram 320XE units show the same results, so I have to believe that they both work exactly as when I got them several years ago. I have not been able to verify some of the remap=ON as mentioned in Ctirad's docs.  I have a totally stock 130XE that performs perfectly normally when remap is OFF or when the Ram 320XE is not connected. The issue is the remap=ON setting. If I set the remap to ON, the machine will either display a black screen or stop in the middle of the boot. I have a gut feel this is an NTSC issue. But I have no PAL machines to test.  Could someone else in NTSC-land test this. Also, could someone with a PAL machine test it.

     

    Here is the easiest-to-understand map of the settings:

     

     

    Ram 320XE.jpg

    • Like 1

  12. I am attempting to test the Ram XE units.  I can't remember how to read the dip switch diagrams. Does the little white spot on the diagram indicate the position of the dip switch, or the black at the other end?

     

    I also can't find an explanation about the "requires modification" note on the batch 2 unit for the 576 kb. Is there another thread I missed?  


  13. OK, I've checked my stock of upgrades. I have two of the Ram 320XE.  Both say Rev 3.  One says batch 2 and the other batch 1. The pcb's are a bit different.  Neither have an ECI pass-through. It appears that the screws holding the shells together are under the labels, so no pictures of the pcbs are possible.  I'll sell either or both of these. PM an offer if interested.

     

    I also have two of the earlier Ram 320XL.  This is interesting because you can map the base 16K or 64K in or out. Check the original thread(s).

     

    The negative thing about these is that they covered up the PBI, but if one uses an SDrive, etc. no big deal.

     

    Same deal, PM an offer if interested. (PayPal, of course.)

     

    -Larry

     

    • Like 2

  14. Well, yes, I have a couple of those things.  I'll dig them out and take a look at what I've actually got. One is Rev 3 Batch 1 which says "320XE/576."  Pretty sure it does not have a Covox in it. A really nice thing about this expansion is that it has a regular vertical cartridge jack (and no soldering).  IIRC, the next version has the "pass-through" ECI (which turned out to be vertical) and had the pcb layout for the Covox.  I'll check.

    -Larry


  15. I took the easy route: C64 Forever and Amiga Forever and also (SID) Music Star under Vice II, but I only use them occasionally.  SID more than anything. They all work great.  The issue that I have with all emulators (no matter how faithful) is the irritating keyboard transposing. Of course for playing games, that's not much of a problem. (And I guess that EclaireXL must be classified as an emulator, so I have that too.)

     

    So here is a question -- is the 1088XL an emulator?  From my limited knowledge, I'd say not, but it does use a foreign keyboard, and the motherboard is quite different. If we get to the point of having replacement chips (Antic, etc.) from FPGA, will those machines be emulators? 

     

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