S5 95U (b) JC instruction

Hi,

I working on an an s5 95U and trying to do a small bit of indirect addressing. I have the DO instruction working fine but im struggling with a JC to load FY7 for the DO instruction. I have 3 bits F2.1, F2.2, F2.3. If F2.1 is true i want to load FY7 with 32, if F2.2 load FY7 with 33 and F2.3 FY7 =0.

I have tried using the following but am getting bogged down somewhere. Can some examine and point me where im going wrong. The cpu is stopping with cycle time overrun error.

Regards,
Barry

FB3 Name

M003: AN F2.1
AN F2.2
JC = M001
L KF +32
T FY7

M001: AN F2.1
AN F2.3
JC = M002
L KF +33
T FY7

M002: AN F2.2
AN F2.3
JC = M003
L KF +0
T FY7

Your logic can jump back to M003 giving an endless loop

An alternative coding (syntax not checked):

LD,

Many thanks for your help once again, I have used your code and its working perfectly. I will try to fix the code i posted to see where i went wrong.

Regards,
Barry.