Re: LZ: JR or JP?
[Prev][Next][Index][Thread]
At 11:56 PM 8/2/96 +0100, you wrote:
>
>> > Does anyone know if there's a reason to use JP instead of JR for a program
>> > jump? The JR instruction, according to the book I have, uses one less byte
>> > to have in code, so that would help optimize memory; also the assembler
>> > resolves the relative (JR) addresses for you, doesn't it?
>>
>> JR is shorter and faster. Also, JP makes assumptions about your programs
>> current location in memory if it's jumping to a location within the program.
>>
>> I'm doing my coding mostly in hex so using JR also makes it easy to move
>> routines around in my program.
>>
>> Generally, use JR when you can and JP when you have to.
>>
>> Yes the assembler resolves the references in either case.
>>
>
>No, IT WONT!
>JR is not to be used on teh TI-85 unless you REALLY know what you are
>doing... JUMP_(), JUMP_Z(), JUMP_NZ(), etc. shoud be used instead..
>
>Full information on these can be found in teh Zshell documentation..
>
>Rob Taylor MAIL - mailto:rtaylor@rtaylor.u-net.com
> WEB - http://www.u-net.com/~rtaylor/
>
Don't you mean jp?
David Kristensen at the University of Missouri - Kansas City
dkristensen@cctr.umkc.edu
The Mind conquers All...
References: