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Re: Test: the cycle


On Fri, 17 Feb 2012, Antoine Vignau wrote:


Second try!

The HEX way:
38 20 1F FE 90 01 60 AD 36 C0 29 7F 8D 36 C0 60
38 20 1F FE 90 01 60 AD 36 C0 29 7F 8D 36 C0 60
38 20 1F FE 90 01 60 AD 36 C0 29 7F 8D 36 C0 60
38 20 1F FE 90 01 60 AD 36 C0 29 7F 8D 36 C0 60
38 20 1F FE 90 01 60 AD 36 C0 29 7F 8D 36 C0 60
38 20 1F FE 90 01 60 AD 36 C0 29 7F 8D 36 C0 60
38 20 1F FE 90 01 60 AD 36 C0 29 7F 8D 36 C0 60
38 20 1F FE 90 01 60 AD 36 C0 29 7F 8D 36 C0 60
38 20 1F FE 90 01 60 AD 36 C0 29 7F 8D 36 C0 60
38 20 1F FE 90 01 60 AD 36 C0 29 7F 8D 36 C0 60
38 20 1F FE 90 01 60 AD 36 C0 29 7F 8D 36 C0 60

The ASM way:
SEC
JSR IDROUTINE ($FE1F)
BCC iigs
RTS

iigs:
LDA $C036
AND �%0111_1111
STA $C036
RTS

av :-)



A-ha, that must be what "Safe Hex" is like.


In little more seriousness:

LDA #$80
TRB $C036
is bit shorter and safer (atomic). There's this miniscule opportunity for the user to go into CDA just after "LDA $C036" and mess with the settings.