Maxim-integrated DS4830 Optical Microcontroller Instrukcja Użytkownika Pobierz pdf (Strona 225)

DS4830 User’s Guide

225

25.3.7 – UROM_moveBP

Function

UROM_moveBP

Summary

Reads the byte/word value pointed to by BP[OFFS].

Inputs

BP[OFFS]: Address to read from 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 BP[OFFS] 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 BP[OFFS] as the data pointer before reading the byte/word value.

 Implemented as: move GR, @BP[OFFS]

25.3.8 – UROM_moveBPinc

Function

UROM_moveBPinc

Summary

Reads the byte/word value pointed to by BP[OFFS], then increments OFFS.

Inputs

BP[OFFS]: Address to read from data space (include 8000h offset if reading from flash).

Outputs

GR: Data byte/word read. OFFS is incremented.

Destroys

None

Notes:

 Before calling this function, DPC should be set appropriately to configure BP[OFFS] 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 BP[OFFS] as the data pointer before reading the byte/word value.

 Implemented as: move GR, @BP[OFFS++]

25.3.9 – UROM_moveBPdec

Function

UROM_moveBPdec

Summary

Reads the byte/word value pointed to by BP[OFFS], then decrements OFFS.

Inputs

BP[OFFS]: Address to read from data space (include 8000h offset if reading from flash).

Outputs

GR: Data byte/word read. OFFS is decremented.

Destroys

None

Notes:

 Before calling this function, DPC should be set appropriately to configure BP[OFFS] 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 BP[OFFS] as the data pointer before reading the byte/word value.

 Implemented as: move GR, @BP[OFFS--]

1 2 ... 220 221 222 223 224 225 226 227

Komentarze do niniejszej Instrukcji

Brak uwag

Maxim-integrated DS4830 Optical Microcontroller Instrukcja Użytkownika Strona 225

Komentarze do niniejszej Instrukcji

Powiązane produkty i podręczniki dla Sprzęt komputerowy Maxim-integrated DS4830 Optical Microcontroller