Mitsubishi Electric M32R Series User Manual page 54

2
(5) Memory (signed) to register transfer
• Signed 32 bits
LD24 Rsrc, #label
LD Rdest, @Rsrc
• Signed 16 bits
LD24 Rsrc, #label
LDH Rdest, @Rsrc
• Signed 8 bits
LD24 Rsrc, #label
LDB Rdest, @Rsrc
Figure 2.6.7 Memory (signed) to register transfer
(6) Memory (unsigned) to register transfer
• Unsigned 32 bits
LD24 Rsrc, #label
LD Rdest, @Rsrc
• Unsigned 16 bits
LD24 Rsrc, #label
LDUH Rdest, @Rsrc
• Unsigned 8 bits
LD24 Rsrc, #label
LDUB Rdest, @Rsrc
Figure 2.6.8 Memory (unsigned) to register transfer
Memory
label
+0 +1 +2
label
+0 +1 +2
Check the MSB
0 = positive
1 = negative
label
+0 +1 +2
Check the MSB
0 = positive
1 = negative
Memory
label
+0 +1 +2
label
+0 +1 +2
label
+0 +1 +2
2-12
2.6 Data Formats
Register
Rdest
+3
0
Rdest
00 00
+3
FF FF
0
Rdest
00 00
+3
FF FF
0
Register
Rdest
+3 0
Rdest
00 00
+3 0
Rdest
00 00
+3 0
CPU
31
31
00
FF
31
31
31
00
31
Ver.0.10