On Wed Jun 15 16:34 , 'B. Watson' <atari@xxxxxxxxxxxxxx> sent:
>Also, isn't there a "trick" where you use JSR to strobe two registers
>faster than normally possible? Hrm, or is that RTS?
JSR is used for that trick. The "termination" of the subroutine would be caught
by the target-PC check, since the target address for the JSR is just the
immediately following instruction.
Alternatively, you could explicitly detect the trick being used by checking if
S < $80. If it is, just single-step past the JSR and don't initiate a "trace over".
(The trick works by setting S to point to one of the RESxx registers, then the
JSR strobes that register and the register immediately below it only one cycle
apart.)
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