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| | Previous Messages | Posted By
Csabo
on 2008-12-24
10:41:53
|  Re: How retrieve stack pointer
You can use the TSX opcode, which will transfer the value of the stack pointer to the X register. Once it's in X, it's trivial to place it to wherever you need it. (The opposite - TXS - can used to directly change the value of SP.)
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Posted By
JamesC
on 2008-12-24
09:27:11
| Re: How retrieve stack pointer
The Stack Pointer (.SP) is internal to the processor. It cannot be manipulated directly, only by adding or removing things from the stack. (Source: Commodore 16 Exposed, page 130)
However, since MONITOR is able to obtain .SP from the processor somehow (to display it), disassembly of MONITOR would point you to the method used.
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Posted By
SVS
on 2008-12-24
05:43:07
 | How retrieve stack pointer
after used Basic SYS command?
I've put in UltimateMap locations for .A .X .Y and .SR ($7F2...$7F5) but not the .SP location.
Indeed I need for my current project the address of the byte with that info.
Thanx.
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