[Instruction] Contents

Advanced Function InstructionFUN 48 PDISTNIBBLE DISTRIBUTEFUN 48 PDISTS : Source data to be distributedN : Number of nibbles to be distributedD : Starting register storing distribution dataS, N, D may combine with V, Z, P0~P9 toserve indirect address applicationOperandRangeWX WY WM WS TMR CTR HR IR OR SR ROR DR K XRWX0∣WX240WY0∣WY240WM0∣WM1896WS0∣WS984T0∣T255C0∣C255R0∣R3839R3840∣R3903R3904∣R3967R3968∣R4167R5000∣R8071D0∣D409516-bit+/-numberP0~P9S ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○N ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ 1~4 ○D ○ ○ ○ ○ ○ ○ ○ ○* ○* ○ ○V、Z• When distribution control "EN" = 1 or "EN↑" ( P instruction) has a transition from 0 to 1, will take Nsuccessive nibbles starting from the lowest nibble NB0 within S, and distribute them in ascending order intothe 0 nibbles of N registers starting from D. The nibbles other than NB0 in each of the registers within D areall set to zero. (A nibble is comprised by 4 bits. Starting from the lowest bit in a register, B0, each successive4 bits form a nibble, so B0~B3 form nibble 0, B4~B7 form nibble 1, etc...)• This instruction only provides WORD (16 bit) operand. Therefore there are usually only 4 nibbles can beinvolved, so the effective value of N is 1~4. Beyond this range, will set the N value error flag "ERR" to 1, anddo not carry out this instruction.X048P.DISTEN S : WY 0N : 3D : R 0ERR• The instruction at left writes NB0~NB2 from the WX0register into the NB0 of the 3 consecutive registersR0~R2.N=3 NB3 NB2 NB1 NB0X15 X11 X0 B15 B0S WX0 0000010000100001 D R0 0000 0000 0000 0001NB3 NB2 NB1 NB0 D+1 R1 0 0 0 0 0000 0000 0010X0=D+2 R2 0 0 0 0 0000 0000 0100NB1~NB3 are all set a "0 "7-23