VASYL & access to system bus

[abbruzze]

Hi,
I would like to understand how VAYSL behaves when accessing the system bus (for example when it executes a MOV towards a VIC register) and how it can "halt" the CPU as mentioned in the FAQ.

Another point: according to the Instruction's doc., MOV will be delayed in case VIC is fetching data (e.g. badline or sprite). Is it the same for XFER (in the documentation is not mentioned)?

Thanks.