Q T16 ----------------------------------------------------------------------- Memory personal computer YAMAHA YIS503IIR 00 01 02 83 87 8B 8F Slot: 0 1 2 3 Ext. slot: 0 1 2 3 +-----+-----+ +-----+ +-----+ +-----+ +-----+-----+-----+-----+ |FFFF:| 3 | | | | | | | | | | RAM | | |C000:| | | | | | | | | | | | | +-----+-----+ +-----+ +-----+ +-----+ +-----+-----+-----+-----+ |BFFF:| 2 | | | | | | | | | | RAM | | |8000:| | | | | | | | | | | | | +-----+-----+ +-----+ +-----+ +-----+ +-----+-----+-----+-----+ |7FFF:| 1 | | ROM | |Cartr| |Cartr| | | RS | RAM | | |4000:| | |Basic| | A | | B | | | ROM | | | +-----+-----+ +-----+ +-----+ +-----+ +-----+-----+-----+-----+ |3FFF:| 0 | | ROM | | | | | | | | RAM | | |0000:| | |BIOS | | | | | | | | | | +-----+-----+ +-----+ +-----+ +-----+ +-----+-----+-----+-----+ ----------------------------------------------------------------------- Memory personal computer YAMAHA YIS503IIIR 00 01 02 83 87 8B 8F Slot: 0 1 2 3 Ext. slot: 0 1 2 3 +-----+-----+ +-----+ +-----+ +-----+ +-----+-----+-----+-----+ |FFFF:| 3 | | | | | | | | | | RAM | | |C000:| | | | | | | | | | | | | +-----+-----+ +-----+ +-----+ +-----+ +-----+-----+-----+-----+ |BFFF:| 2 | | | | | | | | | | RAM | NET | |8000:| | | | | | | | | | | | ROM | +-----+-----+ +-----+ +-----+ +-----+ +-----+-----+-----+-----+ |7FFF:| 1 | | ROM | |Cartr| |Cartr| |CP/M | | RAM | NET | |4000:| | |Basic| | A | | B | | ROM | | | ROM | +-----+-----+ +-----+ +-----+ +-----+ +-----+-----+-----+-----+ |3FFF:| 0 | | ROM | | | | | |Ext. | | RAM | | |0000:| | |BIOS | | | | | |MSX 2| | | | +-----+-----+ +-----+ +-----+ +-----+ +-----+-----+-----+-----+ ----------------------------------------------------------------------- Memory personal computer YAMAHA YIS805/128 R2 00 01 02 83 87 8B 8F Slot: 0 1 2 3 Ext. slot: 0 1 2 3 +-----+-----+ +-----+ +-----+ +-----+ +-----+-----+-----+-----+ |FFFF:| 3 | | | | | | | |Paint| | RAM | | |C000:| | | | | | | | | er | | | | +-----+-----+ +-----+ +-----+ +-----+ +-----+-----+-----+-----+ |BFFF:| 2 | | | | | | | |Paint| | RAM | NET | |8000:| | | | | | | | | er | | | ROM | +-----+-----+ +-----+ +-----+ +-----+ +-----+-----+-----+-----+ |7FFF:| 1 | | ROM | |Cartr| |Cartr| |Paint| ROM | RAM | NET | |4000:| | |Basic| | A | | B | | er |BDOS | | ROM | +-----+-----+ +-----+ +-----+ +-----+ +-----+-----+-----+-----+ |3FFF:| 0 | | ROM | | | | | |Paint|Ext. | RAM | | |0000:| | |BIOS | | | | | | er |MSX 2| | | +-----+-----+ +-----+ +-----+ +-----+ +-----+-----+-----+-----+ ----------------------------------------------------------------------- SLOT 0-3 Prymary slot: Data ----> port (A8h) Data for port A8h: Bits: 7 6 5 4 3 2 1 0 +-+-+-+-+-+-+-+-+ Data: |D D|C C|B B|A A| +-+-+-+-+-+-+-+-+ | | | +------ Page 0 | | +---------- Page 1 | +-------------- Page 2 +------------------ Page 3 ----------------------------------------------------------------------- SLOT 3 Secondary slot: Data ----> (FFFFh) Data for FFFFh: Bits: 7 6 5 4 3 2 1 0 +-+-+-+-+-+-+-+-+ Data: |D D|C C|B B|A A| +-+-+-+-+-+-+-+-+ | | | +------ Page 0 | | +---------- Page 1 | +-------------- Page 2 +------------------ Page 3 ----------------------------------------------------------------------- RAM MSX2: +---+ Data for page 0,1,2,3: (ports FCh,FDh,FEh,FFh) 00:|16K| +---+ +-+-+-+-+-+-+-+-+ 01:|16K| |1|1|1|1|1|x x x| +---+ +-+-+-+-+-+-+-+-+ 02:|16K| +---+ 03:|16K| +---+ xxx - number RAM (0-7) for MSX2 04:|16K| +---+ 05:|16K| +---+ 06:|16K| +---+ 07:|16K| +---+ -----------------------------------------------------------------------