I want to change if my R.O.B. program uses Joysticks or Keyboard/Kids/Touchpad/Keypad controllers based on difficulty switches. One of my pet peeves is not knowing how they should be used, especially when different systems have different labels on them. So what I decided is if they are the same, use Joystick, if they are different, use keyboard. I will probably make switches un-needed anyway, but I wanted to ask about this code.
It seems I cannot use this code (or any variant I can come up with).
if switchrightb = switchleftb then (goto routine)
--- Unresolved Symbol List
0.switchleftb 0000 ???? (R )
but if I do this
if switchleftb then if !switchrightb then (goto routine)
if !switchleftb then if switchrightb then (goto routine)
It compiles and works.
I am ok, just curious if I missed somthing in the documentation.
1
comparing switches
Started by Pioneer4x4, Nov 30 2011 7:40 AM
5 replies to this topic
#1 OFFLINE
Pioneer4x4
-
-
- 1,724 posts
Stargunner
- Atari + R.O.B. = Completed
- Location:PA
Posted Wed Nov 30, 2011 7:40 AM
#2 OFFLINE
jbs30000
-
-
- 459 posts
Moonsweeper
Posted Wed Nov 30, 2011 7:52 PM
Just a guess, but I'm guessing that switchleftb and switchrightb are bits, or at least they're acting like working with bits.
What I mean is, you can't go if a{1}=b{1} for example, but you can go if a{1} then if !b{1}.
What I mean is, you can't go if a{1}=b{1} for example, but you can go if a{1} then if !b{1}.
#3 OFFLINE
Pioneer4x4
-
-
- 1,724 posts
Stargunner
- Atari + R.O.B. = Completed
- Location:PA
Posted Wed Nov 30, 2011 8:36 PM
I guess that is what is happening. And that is what I did to get around it. (I had to check each way).
#4 ONLINE
RevEng
-
-
- 2,011 posts
River Patroller
- bit shoveler
- Location:Canada
Posted Wed Nov 30, 2011 9:04 PM
switchleftb and switchrightb aren't real variables, even though they look like they are.
When bB sees them in a simple if-then command, it creates some conditional logic that tests bits in the 2600 SWCHB hardware register. But if you try to use them in other ways bB doesn't even try to catch it, and your code winds up referencing them as variables that don't exist.
If you want to check if both difficulty switches are the same, you can check the top two bits of SWCHB yourself. Something like the following should work...
When bB sees them in a simple if-then command, it creates some conditional logic that tests bits in the 2600 SWCHB hardware register. But if you try to use them in other ways bB doesn't even try to catch it, and your code winds up referencing them as variables that don't exist.
If you want to check if both difficulty switches are the same, you can check the top two bits of SWCHB yourself. Something like the following should work...
temp1=SWCHB&%11000000 if temp1=%11000000 || temp1=%00000000 then (goto routine)
#5 OFFLINE
Pioneer4x4
-
-
- 1,724 posts
Stargunner
- Atari + R.O.B. = Completed
- Location:PA
Posted Wed Nov 30, 2011 9:50 PM
RevEng, on Wed Nov 30, 2011 9:04 PM, said:
switchleftb and switchrightb aren't real variables, even though they look like they are.
When bB sees them in a simple if-then command, it creates some conditional logic that tests bits in the 2600 SWCHB hardware register. But if you try to use them in other ways bB doesn't even try to catch it, and your code winds up referencing them as variables that don't exist.
If you want to check if both difficulty switches are the same, you can check the top two bits of SWCHB yourself. Something like the following should work...
When bB sees them in a simple if-then command, it creates some conditional logic that tests bits in the 2600 SWCHB hardware register. But if you try to use them in other ways bB doesn't even try to catch it, and your code winds up referencing them as variables that don't exist.
If you want to check if both difficulty switches are the same, you can check the top two bits of SWCHB yourself. Something like the following should work...
temp1=SWCHB&%11000000 if temp1=%11000000 || temp1=%00000000 then (goto routine)
(But it does work!)
#6 OFFLINE
bogax
-
-
- 61 posts
Star Raider
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users
