<> <> <> <> <<>> <> SparcSoftcard: CEDAR DEFINITIONS ~ { <> <> <<>> <> <<>> <> <<>> <> <<>> <> <<>> <<- In the current software implementation a part of this memory is used as memory extension for the Cedar system running on the CP. This Cedar memory is defined as follow:>> cedarMemoryStartByteAddress: CARD32 ~ 0H; <> cedarMemoryByteSize: CARD32 ~ 200000H; <> <<>> <<- The remaining of the memory can be used as Sparc memory. A small amount of it is still visible from the CP and IOP. It is called Backdoor and is used as communication area. Any page of this Backdoor can be set to point anywhere in the Sparc memory. This feature will allow in the future direct IO communications. >> <<>> <> <<>> <> <<>> <> <<>> <> <<>> <> <> <<>> IOBaseByte : CARD32 ~ 0380000H; -- 3.5 Meg <> cedarMemoryExtensionBaseByte: CARD32 ~ 0180000H; -- 1.5 Meg <> cedarMemoryExtensionSizeByte: CARD32 ~ 0200000H; -- 2.0 Meg <> <<>> cedarBackDoorBaseByte: CARD32 ~ 03C0000H; -- 3.75 Meg <> <<>> cedarMemoryEndByte: CARD32 ~ 0400000H; -- 4.0 Meg <> <<>> <<>> <> <<>> sparcIOASI: CARD16 ~ 080H; sparcMapBaseByte : CARD32 ~ 0H; sparcMemoryBankSizeByte : CARD32 ~ 800000H; <