ModuleWare Reference Guide - Hornad

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Arithmetic PartsIncrementer Decrementer (incdec)Incrementer Decrementer (incdec)This part increments or decrements the value of the input port din andplaces the result in the output port dout. The carry out from this result isplaced in scalar output port cout.The addition or subtraction is decided by the value of the scalar input portinc_dec. The polarity of this port is controlled by the enumeratedparameter inc_dec_type.The parameter sign_type selects one of two decrement modes: Unsignedand Signed.Parameter cout_type controls the polarity of port cout.This part is equivalent to an n-bit Incrementer or Decrementer; where n isthe width of the ports din and dout. The implementation of the increment or decrement iscontrolled via the synthesis script.The default action is increment. Use the Incrementer (inc) part if only the increment operation isneeded. Synthesis tools may infer both an increment and decrement for the IncrementerDecrementer (incdec) part.Functiondout = din0 + 1= din0 - 1= din0 + 1= din0 - 1if inc_dec = 1 and inc_dec_type = ActiveHighif inc_dec = 0 and inc_dec_type = ActiveHighif inc_dec = 0 and inc_dec_type = ActiveLowif inc_dec = 1 and inc_dec_type = ActiveLowThe arithmetic is unsigned or signed, depending on the value of the parameter sign_type.cout = 1= 0if there is a carry out during the arithmetic operationotherwiseTruth TableA 3-bit example (sign_type = unsigned, positive polarities):Table 6-28. Incrementer Decrementer Truth Table — 3-bit, Unsigned, PositivePolaritiesdin incdec dout cout000 1 001 0001 1 010 0010 1 011 0011 1 100 0100 1 101 0101 1 110 0120ModuleWare Reference Manual, Library Version 1.9September 18, 2008
110 1 111 0111 1 000 1000 0 111 1001 0 000 0010 0 001 0011 0 010 0100 0 011 0101 0 100 0110 0 101 0111 0 110 0A 3-bit example (sign_type = signed):Arithmetic PartsIncrementer Decrementer (incdec)Table 6-28. Incrementer Decrementer Truth Table — 3-bit, Unsigned, PositivePolarities (cont.)din incdec dout coutTable 6-29. Incrementer Decrementer Truth Table — 3-bit, Signeddin incdec dout cout000 1 001 0001 1 010 0010 1 011 0011 1 100 1100 1 101 0101 1 110 0110 1 111 0111 1 000 0000 0 111 0001 0 000 0010 0 001 0011 0 010 0100 0 011 1101 0 100 0110 0 101 0111 0 110 0ModuleWare Reference Manual, Library Version 1.9 121September 18, 2008
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ModuleWare Reference Manualfor the
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Table of ContentsGated OR (or1) . .
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Table of ContentsBufif0 Primitive (
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List of TablesTable 5-18. N-Way Spl
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List of TablesTable 7-20. RS Flip-F
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List of TablesTable 10-41. XNOR Pri
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IntroductionNaming ConventionsNamin
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IntroductionSupported VHDL Packages
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IntroductionReset/Clear BehaviorYou
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IntroductionSet/Preset BehaviorSet/
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IntroductionGate BehaviorFunctioncl
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IntroductionEnable/Load BehaviorFun
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IntroductionVHDL Coding StyleNotes
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IntroductionDesign Rule CheckingFor
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IntroductionSlice SupportOtherwise
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Logic PartsN-Input AND Gate (and)N-
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Logic PartsN-Input XOR Gate (xor)N-
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Logic PartsN-Input NOR Gate (nor)N-
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Logic PartsAssign (assignment)Assig
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Logic PartsBit Setter (bitset)suffi
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Logic PartsBus Driver (busdrive)Bus
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Logic PartsGated OR (or1)Gated OR (
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Logic PartsInverter (inv)Inverter (
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Logic PartsReduction OR (tor)Reduct
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Logic PartsThree-state Buffer (trib
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Logic PartsThree-state bus (tribus)
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Logic PartsVariable Width N-Input A
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Logic PartsVariable Width N-Input X
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ConstantsConstant Value (constval)C
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ConstantsPower (vdd)Power (vdd)This
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Combinatorial PartsDecoder, Separat
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Combinatorial PartsDecoder, Separat
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Combinatorial PartsDecoder, Combine
Page 70 and 71: Combinatorial PartsEncoder (encoder
Page 72 and 73: Combinatorial PartsN-Input Multiple
Page 74 and 75: Combinatorial PartsN-Input One-hot
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Page 78 and 79: Combinatorial PartsW-Bit Multiplexe
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Page 82 and 83: Bit Manipulation PartsN-Bus Merge (
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Page 86 and 87: Bit Manipulation PartsN-Way Splitte
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Page 90 and 91: Bit Manipulation PartsBus Fill (wor
Page 92 and 93: Bit Manipulation PartsFixed Bit Sel
Page 94 and 95: Bit Manipulation PartsFixed Shifter
Page 96 and 97: Bit Manipulation PartsFixed Shifter
Page 98 and 99: Arithmetic Parts181 ALU (alu181)181
Page 100 and 101: Arithmetic Parts181 ALU (alu181)ovf
Page 102 and 103: Arithmetic PartsAbsolute Value (abs
Page 104 and 105: Arithmetic PartsAccumulator (acc)ad
Page 106 and 107: Arithmetic PartsAdder (add)Adder (a
Page 108 and 109: Arithmetic PartsAdder (add)Table 6-
Page 110 and 111: Arithmetic PartsAdder Subtractor (a
Page 112 and 113: Arithmetic PartsAdder Subtractor (a
Page 114 and 115: Arithmetic PartsComparator (cmp)Com
Page 116 and 117: Arithmetic PartsDecrementer (dec)De
Page 118 and 119: Arithmetic PartsIncrementer (inc)In
Page 122 and 123: Arithmetic PartsIncrementer Decreme
Page 124 and 125: Arithmetic PartsLeft Shifter (lshif
Page 126 and 127: Arithmetic PartsMultiplier (mult)A
Page 128 and 129: Arithmetic PartsRight Shifter (rshi
Page 130 and 131: Arithmetic PartsSubtractor (sub)Sub
Page 132 and 133: Arithmetic PartsSubtractor (sub)Tab
Page 134 and 135: Arithmetic PartsUni-function Compar
Page 136 and 137: Arithmetic PartsVariable Shifter (v
Page 138 and 139: Arithmetic PartsVariable Shifter (v
Page 140 and 141: Register PartsD Flip-Flop (adff)D F
Page 142 and 143: Register PartsD Flip-Flop (adff)Par
Page 144 and 145: Register PartsD Latch (dlatch)If lo
Page 146 and 147: Register PartsD Latch (dlatch)Table
Page 148 and 149: Register PartsJK Flip-Flop (jkff)Fu
Page 150 and 151: Register PartsJK Latch (jklatch)JK
Page 152 and 153: Register PartsJK Latch (jklatch)Asy
Page 154 and 155: Register PartsRS Flip-Flop (rsff)RS
Page 156 and 157: Register PartsRS Flip-Flop (rsff)Ta
Page 158 and 159: Register PartsRS Latch (rslatch)Fun
Page 160 and 161: Register PartsRS Latch (rslatch)Syn
Page 162 and 163: Register PartsT Flip-Flop (tff)Func
Page 164 and 165: Register PartsT Latch (tlatch)T Lat
Page 166 and 167: Register PartsT Latch (tlatch)Async
Page 168 and 169: Register PartsT Latch (tlatch)168Mo
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Sequential PartsBank of Flip-Flops
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Sequential PartsBank of Flip-Flops
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Sequential PartsBank of Latches (la
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Sequential PartsClock Divider (clkd
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Sequential PartsConfigurable Counte
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Sequential PartsModulo Counter (mod
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Sequential PartsParallel to Serial
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Sequential PartsParallel to Serial
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Sequential PartsSerial to Parallel
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Sequential PartsThree-state Bank of
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Sequential PartsThree-state Bank of
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Memory PartsDual Port RAM (ram2p)Du
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Memory PartsFirst In First Out (fif
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Memory PartsFirst In First Out (fif
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Memory PartsSingle Port RAM (ram)Si
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Memory PartsRegister File (regfile)
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Memory PartsROM (rom)ROM (rom)This
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Memory PartsROM (rom)The correspond
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Memory PartsROM (rom)Extended segme
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Memory PartsStack (stack)The reset
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Memory PartsStack (stack)Parameters
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Memory PartsSynthesizable Dual-Port
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Memory PartsSynthesizable Single-Po
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Primitive PartsIntroductionIntroduc
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Primitive PartsIntroductionTable 10
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Primitive PartsBuffer Primitive (pb
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Primitive PartsBufif0 Primitive (pb
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Primitive PartsBufif1 Primitive (pb
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Primitive PartsCMOS Primitive (pcmo
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Primitive PartsNAND Primitive (pnan
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Primitive PartsNOR Primitive (pnor)
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Primitive PartsNOT Primitive (pnot)
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Primitive PartsNotif0 Primitive (pn
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Primitive PartsNotif1 Primitive (pn
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Primitive PartsPMOS Primitive (ppmo
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Primitive PartsPullup Primitive (pp
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Primitive PartsRCMOS Primitive (prc
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Primitive PartsRPMOS Primitive (prp
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Primitive PartsXNOR Primitive (pxno
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Stimulus PartsSimple Clock (clk)Sim
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Stimulus PartsCompound Clock (cmpdc
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Stimulus PartsPulse (pulse)Pulse (p
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Stimulus PartsConstant Wave (constw
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Stimulus PartsRandom Value (random)
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Stimulus PartsRandom Value (random)
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Stimulus PartsCounter Value (counte
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Stimulus PartsCounter Value (counte
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Name ListName Description Pagedlatc
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Name ListName Description Pagesplit
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Function ListFunction Description P
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Function ListFunction Description P
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Function List286ModuleWare Referenc
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A BC D E F G H I J K L M N O P Q R
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A BC D E F G H I J K L M N O P Q R
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4. RESTRICTIONS ON USE. You may cop
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15. CONTROLLING LAW, JURISDICTION A
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ModuleWare Reference Guide - Hornad

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