HD6437020 Datasheet, PDF (135/507 Pages) Hitachi Semiconductor – SuperH™ RISC engine

H'B000000
Logical address space
H'3000000
H'B3FFFFF
H'B400000 _H'33FFFFF
H'3400000
H'B7FFFFF
H'B800000 _H'37FFFFF
H'BBFFFFF ^H'3800000
H'BC00000 _H'3BFFFFF
H'3C00000
H'BFFFFFF
H'3FFFFFF
16-bit space
Shadow
(A23, A22 = 00)
Shadow
(A23, A22 = 01)
Shadow
(A23, A22 = 10)
Shadow
(A23, A22 = 11)
8-bit space
a. Shadow allocation
Actual space
Area
accessible
with A21–A0
4 Mbytes
Logical address space
H'3000000
H'3200000
H'33FFFFF
Location indicated
by address
H'3400000
H'3600000
H'37FFFFF
H'3800000
Location indicated
by address
H'3A00000
H'3BFFFFF
H'3C00000
Location indicated
by address
Actual space
Location actually
accessed
H'3E00000
Location indicated
H'3FFFFFF
by address
8-bit space
b. Actual space accessed when addresses are specified
Figure 8.4 Shadows
HITACHI 119