Motorola DSP56824ADM, User Manual, Page: 28 / 58

2-12 DSP56824ADM User’s Manual MOTOROLA
DSP56824ADM Technical Summary
Jumper Configuration
Example 2-2 shows the code that implements a recall from the flash to the SRAM.
2.6.5 Data Memory Configuration
Jumper group JG4 is used to select one of two DSP external data memory options. The
default setting is JG4 1–2 and 3–4. Data memory is setup from P:0000–$FFFF. See
Table 2-5
for JG4 data memory configuration.
Note: The DSP56824ADM is factory configured for data memory in the range
X:0000–$FFFF.
Example 2-2 Flash Recall to SRAM Code
org p:0
move #$8e38,r0
nop
move p:(r0)+,x0
move #$b1c7,r0
nop
move p:(r0)+,x0
move #$83e0,r0
nop
move p:(r0)+,x0
move #$bc1f,r0
nop
move p:(r0)+,x0
move #$b03f,r0
nop
move p:(r0)+,x0
move #$8c63,r0
nop
move p:(r0)+,x0
debug
Table 2-5 Data Memory Configuration
Configuration JG4 Comment
0 (default) 1–2, 3–4 X:0000–$FFFF, zero wait states
1 5–6 X:0000–$7FFF, one wait state
X:8000–$FFFF User expanded memory
2 1–2 X:0000–$7FFF, zero wait states
X:$8000–$FFFF Shadow of X:0000–$7FFF