Keil MCB517AC, User Manual

Page: 13 / 61

MCB517AC Evaluation Board User’s Guide 7
Monitor: Default ON
The Monitor switch selects if the Monitor is used for debugging or if the
MCB517AC operates with and user application EPROM at IC23. When
Monitor is ON, a the Monitor Memory Mapping is enabled and you must
operate the MCB517AC board with the supplied Monitor EPROM. When
Monitor is OFF the User Memory Mapping is selected and you may insert an
EPROM with your application.
S1: Default OFF
S2: Default OFF
The S1 and S2 switches select the memory map and banking configuration for
the MCB517AC. The memory map used on the MCB517AC board depends on
the setting of the Monitor DIP switch. The memory maps for both settings are
shown in the following tables.
Monitor Memory Mapping (Monitor DIP Switch is ON)
S0 S1 used Pins von Neumann RAM Monitor EPROM Banking
OFF OFF --- 0000h–E7FFh C:E800h–FFFFh disabled
OFF ON illegal illegal illegal illegal
ON OFF illegal illegal illegal illegal
ON ON P6.5-P6.7 Common: 0000h–7FFFh
Bank 0-5: 8000h-E7FFh
C:E800h–FFFFh enabled
User Memory Mapping (Monitor DIP Switch is OFF)
S0 S1 used Pins RAM EPROM Banking
OFF OFF --- X: 0000h–E7FFh C:0000h–FFFFh disabled
OFF ON P6.5 X: 0000h–E7FFh Common: 0000h–7FFFh
Bank 0-1: 8000h-FFFFh
enabled
OFF OFF P6.5-P6.5 X: 0000h–E7FFh Common: 0000h–7FFFh
Bank 0-3: 8000h-FFFFh
enabled
ON OFF P6.5-P6.7 X: 0000h–E7FFh Common: 0000h–7FFFh
Bank 0-6: 8000h-FFFFh
enabled
The CAN interface is always mapped to the address range X:F700h-F7FFh and
the optional user chip select to X:F600h-F6FFh. The 2Kb on-chip XRAM is
available from X:F800h-FFFFh when the SFR-bit XMAP0 is cleared.