>(...)
>>LF0B2: LDA $B2,X ;4
>> STA NUSIZ0 ;3
>> STA REFP0 ;3
>> LDA VSYNC ;3
>> LSR A ;2
>> LSR A ;2
>> ORA VBLANK ;3
>> STA $D9,X ;4
>(...)
>
>I bet this has something to do with random numbers...
That is strange.. VSYNC is a write-only register; its register 0, so LDA
VSYNC reads from register 0, which is CXM0P (a collision register). VBLANK
is also a write-only register (register 3) which corresponds to read
register CXP1FB, which is another collision register.. the ORA would have
to read from register 3, which would be CXP1FB. I don't know what's
supposed to be going on here. The TIA is some mysterious little beast =)
--
Archives available at http://www.biglist.com/lists/stella/archives/
E-mail UNSUBSCRIBE in the body to stella-request@xxxxxxxxxxx to be removed.
