Renesas SH-4A User Manual page 381

Microcomputer development environment system
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2.
Then, enable the VP_MAP tables. (When the tables are disabled, addresses are not translated.)
>ve enable (RET)
>vd (RET)
<VADDR_TOP>
00010000
00011000
ENABLE
Here, virtual addresses correspond to physical addresses as shown in figure 6.59.
H'10000
H'10FFF
H'11000
H'11FFF
H'12000
H'12FFF
Virtual address
Figure 6.59 Address Translation according to VP_MAP Tables
How to translate addresses depends on the settings of the radio buttons of the [Memory area]
group in the [Configuration] dialog box. The following shows how to translate addresses in each
setting state.
• When the Normal radio button is selected:
The VP_MAP table has a priority over the TLB. When the VP_MAP table is enabled and the
specified address is within the VP_MAP table settings, the emulator translates the address
according to the VP_MAP table. If the specified address is outside the VP_MAP table settings
even when the VP_MAP table is enabled, or when the VP_MAP table is disabled, the emulator
translates the address according to the MMU state.
• When the Physical radio button is selected:
The address is not translated.
<VADDR_END>
<PADDR_TOP>
00010fff
04000000
00011fff
00000000
H'0
H'FFF
H'12000
H'12FFF
H'4000000
H'4000FFF
Physical address
357

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