Maxim Integrated DS4830 Optical Microcontroller - Manual (Page 224)

DS4830 User’s Guide
224
25.3.4 – UROM_moveDP1
Function UROM_moveDP1
Summary Reads the byte/word value pointed to by DP[1].
Inputs DP[1]: Address to read data space (include 8000h offset if reading from flash).
Outputs GR: Data byte/word read.
Destroys None
Notes:

Before calling this function, DPC should be set appropriately to configure DP[1] for byte or word mode.

The address passed to this function should be based on the data memory mapping for the utility ROM, as shown
in Figure 25-1. When a byte mode address is used, CDA0 must be set appropriately to access either the upper or
lower half of program flash memory.

This function automatically selects DP[1] as the data pointer before reading the byte/word value.

Implemented as: move GR, @DP[1]
25.3.5 – UROM_moveDP1inc
Function UROM_moveDP1inc
Summary Reads the byte/word value pointed to by DP[1], then increments DP[1].
Inputs DP[1]: Address to read from data space (include 8000h offset if reading from flash).
Outputs GR: Data byte/word read. DP[1] is incremented.
Destroys None
Notes:

Before calling this function, DPC should be set appropriately to configure DP[1] for byte or word mode.

The address passed to this function should be based on the data memory mapping for the utility ROM, as shown
in Figure 25-1. When a byte mode address is used, CDA0 must be set appropriately to access either the upper or
lower half of program flash memory.

This function automatically selects DP[1] as the data pointer before reading the byte/word value.

Implemented as: move GR, @DP[1]++
25.3.6 – UROM_moveDP1dec
Function UROM_moveDP1dec
Summary Reads the byte/word value pointed to by DP[1], then decrements DP[1].
Inputs DP[1]: Address to read from data space (include 8000h offset if reading from flash).
Outputs GR: Data byte/word read. DP[1] is decremented.
Destroys None
Notes:

Before calling this function, DPC should be set appropriately to configure DP[1] for byte or word mode.

The address passed to this function should be based on the data memory mapping for the utility ROM, as shown
in Figure 25-1. When a byte mode address is used, CDA0 must be set appropriately to access either the upper or
lower half of program flash memory.

This function automatically selects DP[1] as the data pointer before reading the byte/word value.

Implemented as: move GR, @DP[1]--