Posted By
siz
on 2022-01-07
03:20:46
|  Re: Accessing 256k of Plus4?
IMHO the most effective way to use Hannes expansion is to set switch boundary to $1000 and set it that TED can access only the base RAM. Then put main code (interrupt handler, banking logic, etc) under $1000 and your graphics data to the default bank (3).
I'm not sure though, that all expansions (and emulators?) can handle bit 6 of the register properly - I seem to remember that mine (purchased from Lotharek) does not handle it). In that case switch bound must be set to $4000 with graphics data and code in default bank and under $4000 - or make sure that you bank out the page with your graphics data when raster is in non-visible area.
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