Carry and Zero flags

pjv

Hi All;

I'm having difficulty in making the Prop behave according to the manual, so I'm suspecting I'm doing something incorrectly.

In particular, the treatment of the Z and C flags when executing a " movi/d/s dest,srce wc/z " instruction.

The manual describes the Z flag treatment, but I cannot get it to correspond.

The manual is silent on the C flag treatment, but does list an example. Again I can't get that to cooperate either.

Could anyone please confirm or refute the manual's results ?

Thanks in advance.

Cheers,

Peter (pjv)

kuroneko

Z responds to source, C is unsigned borrow.

Sorry, wrong insn, source zero is for min/max. movx should respond normally. I check after breakfast.

kuroneko

Works as expected, the first example does not set Z but the second one does. Note that the whole target register must be 0. C remains unsigned borrow.

DAT             org     0

entry           neg     a, #1
                movs    a, #0 wz

        if_z    or      outa, #1

                mov     a, #4
                movs    a, #0 wz

        if_z    or      outa, #2

                shl     outa, #16
                mov     dira, mask

                waitpeq $, #0

mask            long    $00FF0000
a               res     1

                fit

pjv

Thanks Marko. I missed that "whole target register" part. The way the manual reads is "the value of Value" and I interpreted that incorrectly. My thinking would be that your first example would set the Z. (that's what I need).

You're always the trooper !

Cheers,

Peter (pjv)