Engine died

1992 Mazda MX-5 Miata Basic Additional Info:

Died 50 miles from home, driving up a not-too-steep S.F. street when it just wouldn't go, even though engine was running. Since getting it home, have not tried starting again for fear of causing more damage.
5-speed with good clutch
Aftermarket cruise control
Passed smog 3mo ago (Smog Chek 2 is fairly strict)
Cold AC (recharged with Freon R-12 when I bought it)
Various small dings in the body (some touched up with matching red paint)
Radio/CD player takes external input, but sometimes acts up, so there is a spare included
Flushed the radiator for rust but still had rusty look to fluid.
Driver's window needs greasing (did this when I bought it, needs it again...
Sealed lead-acid battery replaced the big OEM version
Chrome roll-bar is not just for show - heavy enough to handle a roll-over
OEM 14" wheels and worn tires that hold air very well.