MADS sin command

[Heaven/TQA]

just a simple question...

 

does the sin command work on the OSX version of MADS?

 

org $5200

sintab dta b(sin(127,127,255,0,0))

 

this generates only one value $7f followed by "0"s. Any ideas what I am doing wrong here or is it a bug in the OSX compiled version?

[MaPa]

I don't know how MADS but in XASM the sin coomand is sin(center,amp,size,first,last). So I assume it will be the same in MADS, so you wanted only part of it from 0 to 0 so only one value. And you probably should set the size to 256 not 255. If you wanted 256 values of a one sine cycle you should write:

 

sintab dta b(sin(127,127,256,0,255))

Edited December 25, 2010 by MaPa

[Heaven/TQA]

hehe... my fault...

 

ok... and how to generate 16bit sin values? so they are divided into a low and a hibyte tabe?

 

org $5400

sintab dta b(sin(127,128,255))

dta b(sin(127,128,255))

sintab2l .byte <(sin(31*256,32*256,255))

sintab2h .byte >(sin(31*256,32*256,255))

 

does not work...

[MaPa]

Try MADS help... but in XASM works:

 

sintab2l dta l(sin(31*256,32*256,255))

sintab2h dta h(sin(31*256,32*256,255))

[MaPa]

double post...

Edited December 25, 2010 by MaPa

[Heaven/TQA]

thx