Zilog Z8F0130 - Manual (Page 416)

Using the Debugger UM013037-1212
392
Zilog Developer Studio II – Z8 Encore!
User Manual
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The PRAM can be used as additional on-chip Register RAM by setting the PRAM_M
option bit low in the device option bits. When the PRAM_M option bit is set the low, the
PRAM at
0xE000 is no longer available and the memory is used as additional Register
RAM. If you want to map PRAM to Register RAM, you must increase the range for
EData (in the Address Spaces page) to include the appropriate amount of PRAM and set
the option bit low.
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For example:
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FLASH_OPTION1 = 0xFD;
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Then, if your device supports
0x800 bytes of Register RAM and 0x400 bytes of PRAM,
the EData range can be extended to 0xBFF by mapping the PRAM to Register RAM. In
this example, the new address range for Rdata is 0x0-0xFF , and the new address range
for Edata is 0x100-0xBFF . When the address range is extended, the complier takes full
advantage of the extra memory.
The following sections describe how to use the Memory window:
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Changing Values – see page 392
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Viewing Addresses – see page 393
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Filling Memory – see page 394
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Saving to a File – see page 395
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Loading from a File – see page 396
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Performing a Cyclic Redundancy Check – see page 396
The Page Up and Page Down keys (on your keyboard) are not functional in the Memory
window. Instead, use the up and down arrow buttons to the right of the Space and Address
fields.
Changing Values
To change the values in the Memory window, perform the following tasks:
1. In the window, highlight the value you want to change. The values begin in the second
column after the Address column.
2. Enter the new value and press the Enter key. The changed value is displayed in red.
Note: