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Thread: Question about Atari ST mouse/joystick ports

  1. #11
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    There are many atari/amiga forums which have this topic, using atari mouse on amiga, using amiga mouse on atari. Even google know about that.

    amigaatarimouseswap.jpg

    By the way, Schneider Euro PC mouse is pin to pin compatibe with Atari mouse. Same mouse also used on Atari PC 1 - 3. It also should be possible to use other quatruple mice, like Microsoft Bus mouse, Olivetti Prodest PC1, Olivetti M24 keyboard mouse. It only depends on the adapter.

  2. #12
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    Quote Originally Posted by 1ST1 View Post
    No, they are digital, they just support a lot of extra buttons. There you can use a Jagpad.
    Take a read here:-

    https://gamesx.com/controldata/ejp_faq.htm

    each port actually consists of a pair of analogue to digital convertors, as well as a number of digital input lines and digital
    output lines. In principal, therefore, the EJPs can be wired up to form a quite sophisticated I/O port. A number of resolution
    enhancers for the Falcon rely on this fact.
    So analog paddles or joysticks can also be connected...
    Dave
    G4UGM

    Looking for Analog Computers, Drum Plotters, and Graphics Terminals

  3. #13
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    Quote Originally Posted by g4ugm View Post
    Sorry my bad. Some original STs had the mouse ports where the floppy drives are on the "F" models.

    All Atari ST models, from 260/520 over STE, Mega ST, Mega STE, TT, STacy, Falcon, ATW 800, even PC1-3 use the same mouse. STBook is different, it has no mouse connector, only internal "VectorPad" which works quite similar to Thinkpad trackpoint. STacy is switchable between internal track ball and external mouse. Only the position of the joystick/mouse connector is different on the listed machines. All the "work" to check mouse is done by the keyboard controller. Like on Olivetti M24 keyboard mouse.

    What you miss on the linked 520ST is the floppy drive, they don't have internal drive. But there was also 520STF which is similar to 1040STF, but just 512 instead of 1024 kB memory. Early floppy drives were single sided only, but also these one can be read by MS-DOS machines (after changing media descriptor byte in boot sector).

  4. #14

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    Quote Originally Posted by g4ugm View Post
    This one is described as an ST

    https://www.ebay.com/itm/283538706242

    does appear to be an STF or FM..
    That one has a built-in floppy drive. You can tell because the case is deeper and the sides of the vent area are squared off, versus the original floppyless ST where the case is shorter and the vents are angles at the sides.

    And there was also the 520ST+, which confusingly came with 1 MB of RAM even though the external badges gave no indication of it being any different than the regular 520ST with only 512K of RAM. (Likewise with the 260ST model sold in Europe -- most of those actually had 512K of RAM, not 256K.)

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