Subject:
|
Zero Page Variables?
|
Newsgroups:
|
lugnet.robotics.handyboard
|
Date:
|
Thu, 29 Feb 1996 20:24:45 GMT
|
Original-From:
|
David Negro <DLN2@saynotospamCORNELL.EDU>
|
Viewed:
|
2086 times
|
| |
|
|
IC gurus,
I am trying to port some of my IR routines to IC and I am having trouble.
I use some bit operations on variables, but this means that the variables
must be in the ZP. I converted the variables to be anywhere in the RAM but
then I have to add extra code.
For example I went from having:
BRSET myvariable $80 Jumplocation
to:
LDY #myvariable
BRSET 0,Y $80 Jumplocation
Now, although this is doable, I would rather not have to do this everytime
I have a bit operation on a variable. Now I tried to make ZP variables but
then IC choked on the .icb file saying something like the .s19 file was not
contiguous. I had:
ORG ZERO_PAGE_START
variable1 FCB 0
ORG MAIN_START
variable2 FCB 0
But IC did not like the compiled version. So although I have a workaround,
is there a way to make ZP variables? I am curious.
-Dave Negro
dln2@cornell.edu
|
|
Message has 1 Reply:
 | | Re: Zero Page Variables?
|
| David, I believe that IC never actually supported zero page variables; it was documented as a feature but never implemented. Your solution of using the indexed registers is what I was going to suggest. -Fred -- This message was composed using (...) (29 years ago, 29-Feb-96, to lugnet.robotics.handyboard)
|
2 Messages in This Thread:
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
