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Re: Test: the cycle

If there's one softswitch we shouldn't play with, this is CYAREG
($C036) on the IIgs. One bit handles shadowing in all RAM banks and
that should be used with precaution.

Please prefer Vlad's or my code to set the fast/slow mode switch,
otherwise the behaviour of the IIgs is not guaranteed:

38 20 1F FE B0 05 A9 80 1C 36 C0 xx xx

SEC
JSR IDROUTINE ($FE1F)
BCS notiigs
LDA #%1000_0000
TRB CYAREG ($C036)

notiigs:
xx
xx