What machine are you compiling on, and what machine are you targeting? The presence of an FPU is very important, as the C standard leaves open the question of rounding. If this is software floating-point (i.e. not compiling for FPU), then I would not at all be surprised if there's just an...
Having bought one of these batteries as a replacement before, it usually is just a stack of LR-something alkaline coin cells connected together in series with nickel strips and then shrink-wrapped. Works as a dimensionally exact replacement. I'll have to take the battery out of mine to see what...
If you open up the machine and look at the deflection yoke (the coils on the CRT), there will be a bunch of magnets around the yoke that have been siliconed in place from the factory. The purpose of these magnets is to tweak the image geometry around the edges and corners.
To be perfectly...