Pic FPU

[Art]

Hi,
It's not the numbers that are needed, but the math,
and in particular, of interest to me, trigonometric functions
not implemented in PBP such as: sin, cos, tan, etc.
needed for calculations such as distance,bearing,foot of perpendicular,
anything to do with angles in games (ball bouncing of a wall at the inverse angle), etc.

[Normnet]

Hi,
It's not the numbers that are needed, but the math,
and in particular, of interest to me, trigonometric functions
not implemented in PBP such as: sin, cos, tan, etc.
needed for calculations such as distance,bearing,foot of perpendicular,
anything to do with angles in games (ball bouncing of a wall at the inverse angle), etc.

Your saying calculations like sin etc. require floating point in place of the use of Longs?

Norm

[Art]

No, because I've seen that cordic trig has been implemented with PicBASIC,
and is demonstrated by a program that can calculate distance and bearing
given a set of geo-coordinates.

I'm saying any purely PBP implementation I've seen is slow and memory consuming,
and unsuitable for anything requiring the speed for a graphics display.

The dspic at 40MIPS should really be doing the whole job,
but in reality, I'd get the job done quicker with a low end pic using PBP
when it comes to interfaces and talking to other devices,
but that could change if one became familiar with the C libraries used
for the communication. A large part of what PBP is, is a collection of
similar libraries in RISC asm.

I think it would be easiest to emulate the comms of LCDOUT/LCDIN
with 8 bit interface, so you could use LCDOUT to talk to it.