Posted By
TLC
on 2004-11-10
09:35:13
|  Re: Mouse emulation
Csabo, you don't need any extra efforts to support the mouse; in that particular mode, the mouse itself emulates a joystick instead.
Plus4Vampyre: if it works, then this "TED protector" should be a bus driver chip or something like that. I don't know the circuit but I'd bet that it's based on a 74ls245 or a similar chip. Nice to know that there's at least some hope that there have been a device available for purchase, with which one could connect a 1351 to the Plus/4 (finally...).
The trick you've found is the official method one should do in order to boot the 1351 in "1350-mode" (= joystick emulation). You mentioned that the pointer doesn't quite move smoothly -- yes, this is normal; whenever you move the mouse, the internal circuitry will pull one or two of the joystick direction lines active for the mouse movement time + 20ms. If you move the mouse slowly, then there will be times when either there's no movement (the mouse pulls no direction lines), or the game fails to catch at least some of these separate 20ms long pulses.
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