Category:Mappers with large PRG RAM: Difference between revisions
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[[Category:Mappers]] | |||
These [[mapper]]s can bankswitch PRG RAM. | These [[mapper]]s can bankswitch PRG RAM. | ||
Specifically, they decode CPU $6000-$7FFF to a second memory chip and control that chip's upper PRG address lines while it is decoded. | Specifically, they decode CPU $6000-$7FFF to a second memory chip and control that chip's upper PRG address lines while it is decoded, allowing use of well over 8192 bytes. | ||
The mapper may have dedicated outputs for the second memory's bank number or may reuse the PRG ROM bank number outputs. | The mapper may have dedicated outputs for the second memory's bank number or may reuse the PRG ROM bank number outputs. | ||
Latest revision as of 01:21, 22 April 2015
These mappers can bankswitch PRG RAM. Specifically, they decode CPU $6000-$7FFF to a second memory chip and control that chip's upper PRG address lines while it is decoded, allowing use of well over 8192 bytes. The mapper may have dedicated outputs for the second memory's bank number or may reuse the PRG ROM bank number outputs.
Pages in category "Mappers with large PRG RAM"
The following 9 pages are in this category, out of 9 total.
