New submission for Saturn assembly version of Math and Trig benchmarks...

[Jonathan Busby]

(05-15-2019 08:20 AM)Werner Wrote:  

(05-14-2019 03:47 PM)Jonathan Busby Wrote:  I made the following error :

Code:

saveTimeandInit
...

    GOSUB   +               * Push address of the next 8 nibble to the return stack
    BSS     8               * Reserve 8 nibbles of RAM to save the current TIMER2 value
+   C=RSTK                  * Get address of TIMER2 RAM save area from the return stack
...

That is, the top level of the RSTK gets a *data* address pushed to it and then when the RTN at the end of the subroutine is called, it "returns" to that address.

Well, I forgot to mention that I later *push* the value in C.A back onto the RSTK It's used by the system time restore code later. The problem is that the GOSUB is called within a subroutine, which is also called via a GOSUB. I tried juggling the RSTK levels, and, although I could get them in the correct order ( ie. return address on top ), in the process I had to clobber D.W and C.W which clobbered the read TIMER2 value

Quote:? No, because you get it off the stack with C=RSTK, and the RTN at the end of the subroutine will return to the previously pushed address. Unless you exhausted the 8 levels, I see no error here. But it's been a while, admittedly.
Cheers, Werner

Well, the IRAMBUFF solution is much simpler so I chose to go with that It's also simpler in that the code is not self-modifying and I don't have to zero out 8-nibbles at the end of the code

If you're the the Werner with whom I corresponded often back in the day on comp.sys.hp48, then long time no see Otherwise, nice to meet you anyway

Regards,

Jonathan