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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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TMS320C80GF Scheda tecnica(PDF) 62 Page - Texas Instruments |
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TMS320C80GF Scheda tecnica(HTML) 62 Page - Texas Instruments |
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62 / 171 page  TMS320C80 DIGITAL SIGNAL PROCESSOR SPRS023B – JULY 1994 – REVISED OCTOBER 1997 59 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 ALU-operation code (continued) Table 20. Function Modifier Codes FUNCTION MODIFIER BITS MODIFICATION PERFORMED 58 56 54 52 0 0 0 0 Normal operation 0 0 0 1 cin 0 0 1 0 %! if maskgen instruction, lmo if not maskgen 0 0 1 1 %! and cin if maskgen instruction, rmo if not maskgen 0 1 0 0 A port = 0 0 1 0 1 A port = 0 and cin 0 1 1 0 A port = 0 and %! if maskgen, lmbc if not maskgen 0 1 1 1 A port = 0, %! and cin if maskgen, rmbc if not maskgen 1 0 0 0 mf bit(s) set by carry out(s). (mc) 1 0 0 1 mf bit(s) set based on status register MSS field. (me) 1 0 1 0 Rotate mf by Asize, mf bit(s) set by carry out(s). (mrc) 1 0 1 1 Rotate mf by Asize, mf bit(s) set based on status register MSS field. (mre) 1 1 0 0 Clear mf, mf bit(s) set by carry out(s). (mzc) 1 1 0 1 Clear mf, mf bit(s) set based on status register MSS field. (mze) 1 1 1 0 No setting of bits in mf register. (mx) 1 1 1 1 Reserved Legend: cin Carry in from sr(C) %! Modified mask generator lmbc Leftmost-bit change rmbc Rightmost-bit change lmo Leftmost one rmo Rightmost one miscellaneous operation code For data-unit opcode format E, the operation field selects one of the miscellaneous operations codes as shown in Table 21. Table 21. Miscellaneous Operation Codes OPCODE BITS MNEMONIC OPERATION 43 42 41 40 39 MNEMONIC OPERATION 0 0 0 0 0 nop No data-unit operation. Status not modified 0 0 0 0 1 qwait Wait until comm Q bit is clear 0 0 0 1 0 eint Global-interrupt enable 0 0 0 1 1 dint Global-interrupt disable 0 0 1 0 0 eloop Global loop enable 0 0 1 0 1 dloop Global loop disable 0 0 1 1 x reserved 0 1 x x x reserved 1 x x x x reserved |
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