UNIF/FARID UNROM 8-IN-1: Difference between revisions

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UNIF MAPR '''FARID_UNROM_8-IN-1''' (note underscores) describes a multicart designed by Farid in 2013. It contains eight 128 KiB UNROM games.
#REDIRECT [[NES 2.0 Mapper 324]]
 
It adds a shadowed "outer bank" register on top of the normal UNROM banking register:
 
Note: bus conflicts are present!
 
$8000-$FFFF: [KOOO .III]
              ||||  |||
              ||||  +++-- Normal UNROM bank register; now inner bank
              |+++------- Outer bank
              +---------- 0 then 1: Latch value written to outer bank and prevent any subsequent writes to outer bank
 
On both warm and cold boot, only the outer bank register is cleared.
 
See also:
* http://forums.nesdev.org/viewtopic.php?t=11099

Latest revision as of 04:48, 27 September 2018

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