MESS and VIC full expanded...

nbla000 · Post by **nbla000** » Mon Sep 06, 2010 10:59 am

How to set a VIC-20 full expanded by using MESS ?

From Help:

RAM options
Different RAM configurations are possible for vic20 systems in MESS. You can switch between them, changing the -ramsize parameter. At command line, you simply have to add ''-ramsize ram_value'', where //ram_value// can assume one of the following values 5k (default) 8k 16k 24k 32k

rhurst · Post by **rhurst** » Mon Sep 06, 2010 5:57 pm

AFAIK,

Code: Select all

mess vic20 -ramsize 32k
mess vic20 -ram 32k

... both should populate 4x8k banks:

$0000 - $1FFF
$2000 - $3FFF
$4000 - $5FFF
$6000 - $7FFF

It's a little screwy semantics to the VIC 20 user. ramsize of 5k = 1k + 4k, and 8k means 1K + 3K + 4K, so it makes sense, but VICE expresses it differently in terms of "expansion", not in aggregate.

I don't know if you can "bank" in RAM into the $A000 - $BFFF address space. Of course, you can use to load an 4kb/8kb ROM cartridge image with the -cart option, but can you "write" to it is another matter. Never tried to.

nbla000 · Post by **nbla000** » Thu Sep 09, 2010 6:01 am

It seems strange to me but I will try, thanks.