hi,
can you guys help me please?
i'm reading the "TMS320C64x/C64x+ DSP CPU and Instruction Set Reference Guide", and when i read section about
dsz bits on specifying LD/ST data size selection, i'm totally confused. What the primary/secondary data sizes all about?
And take the dinc instuction set as a example, there's couple of the same instruction here with different encodes:
DSZ
sz
ld/st Mnemonic
0 x x 0 0 STW (.unit) src, *ptr[ucst2]++
0 x x 0 1 LDW (.unit) *ptr[ucst2]++, dst
0 0 0 1 0 STB (.unit) src, *ptr[ucst2]++
0 0 0 1 1 LDBU (.unit) *ptr[ucst2]++, dst
0 0 1 1 0 STB (.unit) src, *ptr[ucst2]++
0 0 1 1 1 LDB (.unit) *ptr[ucst2]++, dst
0 1 0 1 0 STH (.unit) src, *ptr[ucst2]++
0 1 0 1 1 LDHU (.unit) *ptr[ucst2]++, dst
0 1 1 1 0 STH (.unit) src, *ptr[ucst2]++
0 1 1 1 1 LDH (.unit) *ptr[ucst2]++, dst
1 0 0 1 0 STW (.unit) src, *ptr[ucst2]++
1 0 0 1 1 LDW (.unit) *ptr[ucst2]++, dst
1 0 1 1 0 STB (.unit) src, *ptr[ucst2]++
1 0 1 1 1 LDB (.unit) *ptr[ucst2]++, dst
1 1 0 1 0 STNW (.unit) src, *ptr[ucst2]++
1 1 0 1 1 LDNW (.unit) *ptr[ucst2]++, dst
1 1 1 1 0 STH (.unit) src, *ptr[ucst2]++
1 1 1 1 1 LDH (.unit) *ptr[ucst2]++, dst
So, can someone help me out please? really appreciate it
