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[/] [opencores/] [trunk/] [doc/] [work_flag.txt] - Rev 12
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// update all flags from alu8 for logic operations pv <= parity else ofl
ADCsA_A = 'h8F,// ADC A,A ; 8F
ADCsA_B = 'h88,// ADC A,B ; 88
ADCsA_C = 'h89,// ADC A,C ; 89
ADCsA_D = 'h8A,// ADC A,D ; 8A
ADCsA_E = 'h8B,// ADC A,E ; 8B
ADCsA_H = 'h8C,// ADC A,H ; 8C
ADCsA_L = 'h8D,// ADC A,L ; 8D
ADCsA_N = 'hCE,// ADC A,N ; CE XX
ADDsA_A = 'h87,// ADD A,A ; 87
ADDsA_B = 'h80,// ADD A,B ; 80
ADDsA_C = 'h81,// ADD A,C ; 81
ADDsA_D = 'h82,// ADD A,D ; 82
ADDsA_E = 'h83,// ADD A,E ; 83
ADDsA_H = 'h84,// ADD A,H ; 84
ADDsA_L = 'h85,// ADD A,L ; 85
ADDsA_N = 'hC6,// ADD A,N ; C6 XX
ANDsA = 'hA7,// AND A ; A7
ANDsB = 'hA0,// AND B ; A0
ANDsC = 'hA1,// AND C ; A1
ANDsD = 'hA2,// AND D ; A2
ANDsE = 'hA3,// AND E ; A3
ANDsH = 'hA4,// AND H ; A4
ANDsL = 'hA5,// AND L ; A5
ANDsN = 'hE6,// AND N ; E6 XX
CPsA = 'hBF,// CP A ; BF
CPsB = 'hB8,// CP B ; B8
CPsC = 'hB9,// CP C ; B9
CPsD = 'hBA,// CP D ; BA
CPsE = 'hBB,// CP E ; BB
CPsH = 'hBC,// CP H ; BC
CPsL = 'hBD,// CP L ; BD
CPsN = 'hFE,// CP N ; FE XX
ORsA = 'hB7,// OR A ; B7
ORsB = 'hB0,// OR B ; B0
ORsC = 'hB1,// OR C ; B1
ORsD = 'hB2,// OR D ; B2
ORsE = 'hB3,// OR E ; B3
ORsH = 'hB4,// OR H ; B4
ORsL = 'hB5,// OR L ; B5
ORsN = 'hF6,// OR N ; F6 XX
SBCsA = 'h9F,// SBC A ; 9F
SBCsA_N = 'hDE,// SBC A,N ; DE XX
SBCsB = 'h98,// SBC B ; 98
SBCsC = 'h99,// SBC C ; 99
SBCsD = 'h9A,// SBC D ; 9A
SBCsE = 'h9B,// SBC E ; 9B
SBCsH = 'h9C,// SBC H ; 9C
SBCsL = 'h9D,// SBC L ; 9D
SUBsA = 'h97,// SUB A ; 97
SUBsB = 'h90,// SUB B ; 90
SUBsC = 'h91,// SUB C ; 91
SUBsD = 'h92,// SUB D ; 92
SUBsE = 'h93,// SUB E ; 93
SUBsH = 'h94,// SUB H ; 94
SUBsL = 'h95,// SUB L ; 95
SUBsN = 'hD6,// SUB N ; D6 XX
XORsA = 'hAF,// XOR A ; AF
XORsB = 'hA8,// XOR B ; A8
XORsC = 'hA9,// XOR C ; A9
XORsD = 'hAA,// XOR D ; AA
XORsE = 'hAB,// XOR E ; AB
XORsH = 'hAC,// XOR H ; AC
XORsL = 'hAD,// XOR L ; AD
XORsN = 'hEE,// XOR N ; EE XX
// same as above but no cf change oh my god why?
DECsA = 'h3D,// DEC A ; 3D
DECsB = 'h05,// DEC B ; 05
DECsC = 'h0D,// DEC C ; 0D
DECsD = 'h15,// DEC D ; 15
DECsE = 'h1D,// DEC E ; 1D
DECsH = 'h25,// DEC H ; 25
DECsL = 'h2D,// DEC L ; 2D
INCsA = 'h3C,// INC A ; 3C
INCsB = 'h04,// INC B ; 04
INCsC = 'h0C,// INC C ; 0C
INCsD = 'h14,// INC D ; 14
INCsE = 'h1C,// INC E ; 1C
INCsH = 'h24,// INC H ; 24
INCsL = 'h2C,// INC L ; 2C
// update h n c (f5, f3) from alu16
ADDsHL_BC = 'h09,// ADD HL,BC ; 09
ADDsHL_DE = 'h19,// ADD HL,DE ; 19
ADDsHL_HL = 'h29,// ADD HL,HL ; 29
ADDsHL_SP = 'h39,// ADD HL,SP ; 39
INCsBC = 'h03,// INC BC ; 03
INCsDE = 'h13,// INC DE ; 13
INCsHL = 'h23,// INC HL ; 23
INCsSP = 'h33,// INC SP ; 33
// update all flags from alu16
ED_SBCsHL_REG = 6'b01__0010, // compair with {ir[7:6],ir[3:0]}
ED_ADCsHL_REG = 6'b01__1010, // compair with {ir[7:6],ir[3:0]}
// the shifts probably muck with all flags (some operations are
// guarenteed not to change certain flags )
// crap docs say sf and zf never change for these ops.
RLA = 'h17,// RLA ; 17
RLCA = 'h07,// RLCA ; 07
RRA = 'h1F,// RRA ; 1F
RRCA = 'h0F,// RRCA ; 0F
// sf and zf do change for theses
CB_RLC = 5'b00_000, // these must be compaired with ir[7:3]
CB_RRC = 5'b00_001, // these must be compaired with ir[7:3]
CB_RL = 5'b00_010, // these must be compaired with ir[7:3]
CB_RR = 5'b00_011, // these must be compaired with ir[7:3]
CB_SLA = 5'b00_100, // these must be compaired with ir[7:3]
CB_SRA = 5'b00_101, // these must be compaired with ir[7:3]
CB_SLL = 5'b00_110, // these must be compaired with ir[7:3]
CB_SRL = 5'b00_111, // these must be compaired with ir[7:3]
// pretty nomal stuff here
CB_BIT = 2'b01, // these must be compaired with ir[7:6]
// which alu? --
ED_NEG = 5'b01___100, // compair with {ir[7:6],ir[2:0]} all A<= -A
// rmw 8 types
INCs6HL7 = 'h34,// INC (HL) ; 34
DECs6HL7 = 'h35,// DEC (HL) ; 35
// ED Block Move messyness
// hf and nf <= 0 pnf<= BC==0
ED_LDI = 'hA0// LDI ; ED A0 (DE++) <= (HL++) , BC--
ED_LDD = 'hA8// LDD ; ED A8 (DE--) <= (HL--) , BC--
ED_LDIR = 'hB0// LDIR ; ED B0 (DE++) <= (HL++) , BC-- Repeat til BC==0
ED_LDDR = 'hB8// LDDR ; ED B8 (DE--) <= (HL--) , BC-- Repeat til BC==0
// only c not affected - nf<=1 ?
ED_CPI = 'hA1// CPI ; ED A1 A - (HL++) , BC--
ED_CPD = 'hA9// CPD ; ED A9 A - (HL--) , BC--
ED_CPIR = 'hB1// CPIR ; ED B1 A - (HL++) , BC-- repeat if(|B
ED_CPDR = 'hB9// CPDR ; ED B9 A - (HL--) , BC-- repeat if(|B
// all the ed i/o muck with all flags -- wonderful cf?
// use the aluoutput for the b-1 computation.
ED_INI = 'hA2// INI ; ED A2 (HL++) <- (Cio) , B--
ED_IND = 'hAA// IND ; ED AA (HL--) <- (Cio) , B--
ED_INIR = 'hB2// INIR ; ED B2 (HL++) <- (Cio) , B-- repeat if(|B)
ED_INDR = 'hBA// INDR ; ED BA (HL--) <- (Cio) , B-- repeat if(|B)
ED_OUTI = 'hA3// OUTI ; ED A3 (Cio) <-(HL++) , B--
ED_OUTD = 'hAB// OUTD ; ED AB (Cio) <-(HL--) , B--
ED_OTIR = 'hB3// OTIR ; ED B3 (Cio) <-(HL++) , B-- rpt if(|B)
ED_OTDR = 'hBB// OTDR ; ED BB (Cio) <-(HL--) , B-- rpt if(|B)
ED_INsREG_6C7 = 5'b01___000,// compair with {ir[7:6],ir[2:0]} really (BCio)
ED_OUTs6C7_REG = 5'b01___001,// compair with {ir[7:6],ir[2:0]}
// special problems
CCF = 'h3F,// CCF ; 3F // h<=c c<=1C N<=0 F3,F5?
CPL = 'h2F,// CPL ; 2F // H<=1 N<=1 F3,F5?
DAA = 'h27,// DAA ; 27 // H<=0???
SCF = 'h37,// SCF ; 37
ED_RRD = 'h67// RRD ; ED 67 nibble roates A HL
ED_RLD = 'h6F// RLD ; ED 6F nibble roates A HL
ED_LDsA_I = 'h57// LD A,I ; ED 57 move I to A
// no changes
CB_RES = 2'b10, // these must be compaired with ir[7:6]
CB_SET = 2'b11, // these must be compaired with ir[7:6]
DECsBC = 'h0B,// DEC BC ; 0B
DECsDE = 'h1B,// DEC DE ; 1B
DECsHL = 'h2B,// DEC HL ; 2B
DECsSP = 'h3B,// DEC SP ; 3B
DI = 'hF3,// DI ; F3
EI = 'hFB,// EI ; FB
EXX = 'hD9,// EXX ; D9
EXsAF_AFp = 'h08,// EX AF,AF' ; 08
EXsDE_HL = 'hEB,// EX DE,HL ; EB
HALT = 'h76,// HALT ; 76
LDsA_A = 'h7F,// LD A,A ; 7F
LDsA_B = 'h78,// LD A,B ; 78
LDsA_C = 'h79,// LD A,C ; 79
LDsA_D = 'h7A,// LD A,D ; 7A
LDsA_E = 'h7B,// LD A,E ; 7B
LDsA_H = 'h7C,// LD A,H ; 7C
LDsA_L = 'h7D,// LD A,L ; 7D
LDsA_N = 'h3E,// LD A,N ; 3E XX
LDsBC_nn = 'h01,// LD BC,NN ; 01 XX XX
LDsB_A = 'h47,// LD B,A ; 47
LDsB_B = 'h40,// LD B,B ; 40
LDsB_C = 'h41,// LD B,C ; 41
LDsB_D = 'h42,// LD B,D ; 42
LDsB_E = 'h43,// LD B,E ; 43
LDsB_H = 'h44,// LD B,H ; 44
LDsB_L = 'h45,// LD B,L ; 45
LDsB_N = 'h06,// LD B,N ; 06 XX
LDsC_A = 'h4F,// LD C,A ; 4F
LDsC_B = 'h48,// LD C,B ; 48
LDsC_C = 'h49,// LD C,C ; 49
LDsC_D = 'h4A,// LD C,D ; 4A
LDsC_E = 'h4B,// LD C,E ; 4B
LDsC_H = 'h4C,// LD C,H ; 4C
LDsC_L = 'h4D,// LD C,L ; 4D
LDsC_N = 'h0E,// LD C,N ; 0E XX
LDsDE_NN = 'h11,// LD DE,NN ; 11 XX XX
LDsD_A = 'h57,// LD D,A ; 57
LDsD_B = 'h50,// LD D,B ; 50
LDsD_C = 'h51,// LD D,C ; 51
LDsD_D = 'h52,// LD D,D ; 52
LDsD_E = 'h53,// LD D,E ; 53
LDsD_H = 'h54,// LD D,H ; 54
LDsD_L = 'h55,// LD D,L ; 55
LDsD_N = 'h16,// LD D,N ; 16 XX
LDsE_A = 'h5F,// LD E,A ; 5F
LDsE_B = 'h58,// LD E,B ; 58
LDsE_C = 'h59,// LD E,C ; 59
LDsE_D = 'h5A,// LD E,D ; 5A
LDsE_E = 'h5B,// LD E,E ; 5B
LDsE_H = 'h5C,// LD E,H ; 5C
LDsE_L = 'h5D,// LD E,L ; 5D
LDsE_N = 'h1E,// LD E,N ; 1E XX
LDsHL_NN = 'h21,// LD HL,NN ; 21 XX XX
LDsH_A = 'h67,// LD H,A ; 67
LDsH_B = 'h60,// LD H,B ; 60
LDsH_C = 'h61,// LD H,C ; 61
LDsH_D = 'h62,// LD H,D ; 62
LDsH_E = 'h63,// LD H,E ; 63
LDsH_H = 'h64,// LD H,H ; 64
LDsH_L = 'h65,// LD H,L ; 65
LDsH_N = 'h26,// LD H,N ; 26 XX
LDsL_A = 'h6F,// LD L,A ; 6F
LDsL_B = 'h68,// LD L,B ; 68
LDsL_C = 'h69,// LD L,C ; 69
LDsL_D = 'h6A,// LD L,D ; 6A
LDsL_E = 'h6B,// LD L,E ; 6B
LDsL_H = 'h6C,// LD L,H ; 6C
LDsL_L = 'h6D,// LD L,L ; 6D
LDsL_N = 'h2E,// LD L,N ; 2E XX
LDsSP_HL = 'hF9,// LD SP,HL ; F9
LDsSP_NN = 'h31,// LD SP,NN ; 31 XX XX
NOP = 'h00,// NOP ; 00
ED_IMs0 = 'h46// IM 0 ; ED 46 set IM0
ED_LDsI_A = 'h47// LD I,A ; ED 47 move a to I
ED_IMs1 = 'h56// IM 1 ; ED 56 set IM1
ED_IMs2 = 'h5E// IM 2 ; ED 5E set IM2
// load 8 types
LDsA_6BC7 = 'h0A,// LD A,(BC) ; 0A
LDsA_6DE7 = 'h1A,// LD A,(DE) ; 1A
LDsB_6HL7 = 'h46,// LD B,(HL) ; 46
LDsD_6HL7 = 'h56,// LD D,(HL) ; 56
LDsH_6HL7 = 'h66,// LD H,(HL) ; 66
ADDsA_6HL7 = 'h86,// ADD A,(HL) ; 86
SUBs6HL7 = 'h96,// SUB (HL) ; 96
ANDs6HL7 = 'hA6,// AND (HL) ; A6
ORs6HL7 = 'hB6,// OR (HL) ; B6
LDsC_6HL7 = 'h4E,// LD C,(HL) ; 4E
LDsE_6HL7 = 'h5E,// LD E,(HL) ; 5E
LDsL_6HL7 = 'h6E,// LD L,(HL) ; 6E
LDsA_6HL7 = 'h7E,// LD A,(HL) ; 7E
ADCsA_6HL7 = 'h8E,// ADC A,(HL) ; 8E
SBCs6HL7 = 'h9E,// SBC (HL) ; 9E
XORs6HL7 = 'hAE,// XOR (HL) ; AE
CPs6HL7 = 'hBE,// CP (HL) ; BE
LDsA_6NN7 = 'h3A,// LD A,(NN) ; 3A XX XX
CB_MEM & CB_BIT = 2'b01, // (HL) these must be compaired with ir[7:6]
// load 16 types
LDsHL_6NN7 = 'h2A,// LD HL,(NN) ; 2A XX XX
POPsAF = 'hF1,// POP AF ; F1 AF<- (SP++ ++)
POPsBC = 'hC1,// POP BC ; C1 BC<- (SP++ ++)
POPsDE = 'hD1,// POP DE ; D1 DE<- (SP++ ++)
POPsHL = 'hE1,// POP HL ; E1 HL<- (SP++ ++)
ED_LDsREG_6NN7 = 6'b01__1011, // compair with {ir[7:6],ir[3:0]} REG = BC,DE,HL,SP
// store 8 types
LDs6HL7_N = 'h36,// LD (HL),N ; 36 XX
LDs6BC7_A = 'h02,// LD (BC),A ; 02
LDs6DE7_A = 'h12,// LD (DE),A ; 12
LDs6HL7_A = 'h77,// LD (HL),A ; 77
LDs6HL7_B = 'h70,// LD (HL),B ; 70
LDs6HL7_C = 'h71,// LD (HL),C ; 71
LDs6HL7_D = 'h72,// LD (HL),D ; 72
LDs6HL7_E = 'h73,// LD (HL),E ; 73
LDs6HL7_H = 'h74,// LD (HL),H ; 74
LDs6HL7_L = 'h75,// LD (HL),L ; 75
LDs6NN7_A = 'h32,// LD (NN),A ; 32 XX XX
// store 16 types
PUSHsAF = 'hF5,// PUSH AF ; F5 (-- --SP) <- AF
PUSHsBC = 'hC5,// PUSH BC ; C5 (-- --SP) <- BC
PUSHsDE = 'hD5,// PUSH DE ; D5 (-- --SP) <- DE
PUSHsHL = 'hE5,// PUSH HL ; E5 (-- --SP) <- HL
LDs6NN7_HL = 'h22,// LD (NN),HL ; 22 XX XX
ED_LDs6NN7_REG = 6'b01__0011,// XX XX compair with {ir[7:6],ir[3:0]} REG = BC,DE,HL,SP
// rmw 16 types
EXs6SP7_HL = 'hE3,// EX (SP),HL ; E3
// Jumps only trick here is that next inst is not valid - ignore it
JRs$t2 = 'h18,// JR $+2 ; 18 XX
JRsC_$t2 = 'h38,// JR C,$+2 ; 38
JRsNC_$t2 = 'h30,// JR NC,$+2 ; 30
JRsNZ_$t2 = 'h20,// JR NZ,$+2 ; 20
JRsZ_$t2 = 'h28,// JR Z,$+2 ; 28
DJNZs$t2 = 'h10,// DJNZ $+2 ; 10 XX XX
JPs = 'hC3,// JP $+3 ; C3 XX XX
JPsC = 'hDA,// JP C,$+3 ; DA XX XX
JPsHL = 'hE9,// JP HL ; E9 // documented as indirect IS NOT
JPsM = 'hFA,// JP M,$+3 ; FA XX XX
JPsNC = 'hD2,// JP NC,$+3 ; D2 XX XX
JPsNZ = 'hC2,// JP NZ,$+3 ; C2 XX XX
JPsPE = 'hEA,// JP PE,$+3 ; EA XX XX
JPsPO = 'hE2,// JP PO,$+3 ; E2 XX XX
JPsP = 'hF2,// JP P,$+3 ; F2 XX XX
JPsZ = 'hCA,// JP Z,$+3 ; CA XX XX
RSTs0 = 'hC7,// RST 0 ; C7
RSTs8H = 'hCF,// RST 8H ; CF
RSTs10H = 'hD7,// RST 10H ; D7
RSTs18H = 'hDF,// RST 18H ; DF
RSTs20H = 'hE7,// RST 20H ; E7
RSTs28H = 'hEF,// RST 28H ; EF
RSTs30H = 'hF7,// RST 30H ; F7
RSTs38H = 'hFF,// RST 38H ; FF
// calls
CALLsC_NN = 'hDC,// CALL C,NN ; DC XX XX (-- --SP) <- PC, PC<-NN
CALLsM_NN = 'hFC,// CALL M,NN ; FC XX XX (-- --SP) <- PC, PC<-NN
CALLsNC_NN = 'hD4,// CALL NC,NN ; D4 XX XX (-- --SP) <- PC, PC<-NN
CALLsNN = 'hCD,// CALL NN ; CD XX XX (-- --SP) <- PC, PC<-NN
CALLsNZ_NN = 'hC4,// CALL NZ,NN ; C4 XX XX (-- --SP) <- PC, PC<-NN
CALLsPE_NN = 'hEC,// CALL PE,NN ; EC XX XX (-- --SP) <- PC, PC<-NN
CALLsPO_NN = 'hE4,// CALL PO,NN ; E4 XX XX (-- --SP) <- PC, PC<-NN
CALLsP_NN = 'hF4,// CALL P,NN ; F4 XX XX (-- --SP) <- PC, PC<-NN
CALLsZ_NN = 'hCC,// CALL Z,NN ; CC XX XX (-- --SP) <- PC, PC<-NN
//returns
RET = 'hC9,// RET ; C9 PC <- (SP++ ++)
RETsC = 'hD8,// RET C ; D8 PC <- (SP++ ++)
RETsM = 'hF8,// RET M ; F8 PC <- (SP++ ++)
RETsNC = 'hD0,// RET NC ; D0 PC <- (SP++ ++)
RETsNZ = 'hC0,// RET NZ ; C0 PC <- (SP++ ++)
RETsP = 'hF0,// RET P ; F0 PC <- (SP++ ++)
RETsPE = 'hE8,// RET PE ; E8 PC <- (SP++ ++)
RETsPO = 'hE0,// RET PO ; E0 PC <- (SP++ ++)
RETsZ = 'hC8,// RET Z ; C8 PC <- (SP++ ++)
ED_RETN = 5'b01___101; // compair with {ir[7:6],ir[2:0]} and !reti
//io input no flag chnges for this one
INsA_6N7 = 'hDB,// IN A,(N) ; DB XX A<-(Nio)//silly
//io output
OUTs6N7_A = 'hD3,// OUT (N),A ; D3 XX A-> (Nio)
CBgrp = 'hCB,// CBgrp is rotates and bit munging below
EDgrp = 'hED,// EDgrp ED
FDgrp = 'hFD,// FDgrp FD
DDgrp = 'hDD,// DDgrp
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