Space 1999 - players area

[Chema]

I just noticed something... In the above code it says:

Code: Select all

     ;Note that the write to the column register cannot simply be permanent 
        ;(Which would reduce amount of code) because some orics freeze(crash). 

But I can't see a point where the register is cleared, or whatever needs to be done, to make the write not permanent... Missing something here?

I was just guessing that maybe, in Space:1999, as the IRQ also runs sfx and music, this was done in another routine... somehow...

Twilighte!! We need your help here!!!

[Symoon]

Chema, I tested your new code.
Worked perfectly !
All keys reponded, even down to 3 cycles wait.
Pressing ESC gave then no result, I couldn't try with 1 cycle

[Chema]

That is completely unexpected... I swear I just subsituted the ldy/dey/bne for the jmp over nops...

When you hit 3, you cannot save more cycles, as the jmp itself takes 3 cycles... but now I wonder how far we could go...

(will check I did not make any mistake and result in waiting all the time 19 cycles)

Maybe prepare yet another couple of programs one with one nop and the other with no nops

No, seriously, I am sure that 2 nops were not enough in Fabrice's hardware, and 4 were, so we in 8 cycles to be compliant to both tests...

Please, anybody else who can try, do so...