IRQ Query

[robinfawell]

After a long break this my first query. I have nearly finished the case and stand for my digital piano.

The keyboard used is a Fatar Wood 88 note velocity sensitive and I will follow QBas scan matrix (latest version).

I am trying to get a better understanding of the QBas asm code .

There is early reference to IRQ_TMP1.

As far as I can understand the TMP's and IRQ_TMP's are restricted MIOS memory locations. I may be wrong but they would seem to be all the same. Is there significance in the name IRQ? (interrupt request?) and in the name TMP (Temporary?). Would TMP locations be used differently from IRQ_TMP locations?

Are they merely general purpose locations?

I will appreciate any answers.

Robin

PS I was making assumptions based on the PIC operation. The use of the Memory locations will depend on MIOS. Therefore I am asking for an explanation of the two functions. If there is a reference somewhere just point me to it.

Edited May 17, 2010 by robinfawell