MAXQ Family User’s Guide:
MAXQ2000 Supplement
Function: moveDP0dec
Summary: Reads the byte/word value pointed to by DP[0], then decrements DP[0].
Inputs: DP[0]: Address to read from
Outputs: GR: Data byte/word read
DP[0] is decremented
Destroys: None
Notes:
1) Before calling this function, DPC should be set appropriately to configure DP[0] for byte or word mode.
2) The address passed to this function should be based on the data memory mapping for the utility ROM, as shown in Figure 3. When a
byte mode address is used, CDA0 must be set appropriately to access either the upper or lower half of program flash/ROM memory.
3) This function automatically refreshes the data pointer before reading the byte/word value.
Function: moveDP1
Summary: Reads the byte/word value pointed to by DP[1].
Inputs: DP[1]: Address to read from
Outputs: GR: Data byte/word read
Destroys: None
Notes:
1) Before calling this function, DPC should be set appropriately to configure DP[1] for byte or word mode.
2) The address passed to this function should be based on the data memory mapping for the Utility ROM, as shown in Figure 3. When a
byte mode address is used, CDA0 must be set appropriately to access either the upper or lower half of program flash/ROM memory.
3) This function automatically refreshes the data pointer before reading the byte/word value.
Function: moveDP1inc
Summary: Reads the byte/word value pointed to by DP[1], then increments DP[1].
Inputs: DP[1]: Address to read from
Outputs: GR: Data byte/word read
DP[1] is incremented
Destroys: None
Notes:
1) Before calling this function, DPC should be set appropriately to configure DP[1] for byte or word mode.
2) The address passed to this function should be based on the data memory mapping for the utility ROM, as shown in Figure 3. When a
byte mode address is used, CDA0 must be set appropriately to access either the upper or lower half of program flash/ROM memory.
3) This function automatically refreshes the data pointer before reading the byte/word value.
Function: moveDP1dec
Summary: Reads the byte/word value pointed to by DP[1], then decrements DP[1].
Inputs: DP[1]: Address to read from
Outputs: GR: Data byte/word read
DP[1] is decremented
Destroys: None
Notes:
1) Before calling this function, DPC should be set appropriately to configure DP[1] for byte or word mode.
2) The address passed to this function should be based on the data memory mapping for the utility ROM, as shown in Figure 3. When a
byte mode address is used, CDA0 must be set appropriately to access either the upper or lower half of program flash/ROM memory.
3) This function automatically refreshes the data pointer before reading the byte/word value.
(147 paginas)
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