Posted By
TLC
on 2010-10-05
16:08:50
|  Re: SID-card scheme?
[Terra-X] is an 1990 game... it definitely shouldn't support Commodore's 1351 mouse connected to the Sid card's joyport (1992). ...As a matter of fact, because of low-level differences, the 1351 can't cooperate with the Plus/4 joyport if connected using a regular C64 joystick --> Plus/4 joyport cable (in any of its operating modes), so it's basically a "no-go". The only one that is physically possible to handle (with no extra hw but the above adapter cable) by the Plus/4 is the Amiga mouse -- but thad'd be tricky and cpu-intensive. I'd doubt that TCFS referred to anything but a nice joke by that option... 
Solder must have added that extra joyport to the sid card to address this sort of problem... the extra joyport is fully (...well, almost) compatible to the one found on the C64. It can also handle paddles (similarly to the VIC-20 and the C64), and it's compatible with the 1351 mouse.
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