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Fix cycle counting for relative branches. The original creator of the cycle counting code appears to have mangled two different approaches to counting the cycles for relative branches into the final product which led to counting too many cycles for the branch instructions. The comments in the cycle table were correct but the code was doing some incorrect things. Also add the missing LBRN entry to the cycle table. The one labelled LBRN was not, in fact, LBRN, but one of the actual useful branch instructions.
author William Astle <lost@l-w.ca>
date Thu, 03 Mar 2016 21:38:21 -0700
parents 4c8925f97eb5
children b9917c4dc6cf
line wrap: on
line source

/*
cycle.c

Copyright (c) 2015 Erik Gavriluk
Dual-licensed BSD 3-CLAUSE and GPL as per below.
Thanks to John Kowalksi for cycle count verification.

This file is part of LWTOOLS.

LWTOOLS is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.

You should have received a copy of the GNU General Public License along with
this program. If not, see <http://www.gnu.org/licenses/>.
*/

#include "lwasm.h"

typedef struct
{
	int opc;
	int cycles_6809;
	int cycles_6309;
	cycle_flags flags;
} cycletable_t;

static cycletable_t cycletable[] =
{
	{ 0x3a, 3, 1, 0 },					// ABX

	{ 0x89, 2, 2, 0 },					// ADCA
	{ 0x99, 4, 3, 0 },
	{ 0xa9, 4, 4, CYCLE_ADJ },
	{ 0xb9, 5, 4, 0 },

	{ 0xc9, 2, 2, 0 },					// ADCB
	{ 0xd9, 4, 3, 0 },
	{ 0xe9, 4, 4, CYCLE_ADJ },
	{ 0xf9, 5, 4, 0 },

	{ 0x1089, 5, 4, 0 },				// ADCD
	{ 0x1099, 7, 5, 0 },
	{ 0x10a9, 7, 6, CYCLE_ADJ },
	{ 0x10b9, 8, 6, 0 },

	{ 0x8b, 2, 2, 0 },					// ADDA
	{ 0x9b, 4, 3, 0 },
	{ 0xab, 4, 4, CYCLE_ADJ },
	{ 0xbb, 5, 4, 0 },

	{ 0xcb, 2, 2, 0 },					// ADDB
	{ 0xdb, 4, 3, 0 },
	{ 0xeb, 4, 4, CYCLE_ADJ },
	{ 0xfb, 5, 4, 0 },

	{ 0xc3, 4, 3, 0 },					// ADDD
	{ 0xd3, 6, 4, 0 },
	{ 0xe3, 6, 5, CYCLE_ADJ },
	{ 0xf3, 7, 5, 0 },

	{ 0x118b, 3, 3, 0 },				// ADDE
	{ 0x119b, 5, 4, 0 },
	{ 0x11ab, 5, 5, CYCLE_ADJ },
	{ 0x11bb, 6, 5, 0 },

	{ 0x11cb, 3, 3, 0 },				// ADDF
	{ 0x11db, 5, 4, 0 },
	{ 0x11eb, 5, 5, CYCLE_ADJ },
	{ 0x11fb, 6, 5, 0 },

	{ 0x1031, 4, 4, 0 },				// ADCR
	{ 0x1030, 4, 4, 0 },				// ADDR
	{ 0x1034, 4, 4, 0 },				// ANDR
	{ 0x1037, 4, 4, 0 },				// CMPR
	{ 0x1036, 4, 4, 0 },				// EORR
	{ 0x1035, 4, 4, 0 },				// ORR
	{ 0x1033, 4, 4, 0 },				// SBCR
	{ 0x1032, 4, 4, 0 },				// SUBR

	{ 0x108b, 5, 4, 0 },				// ADDW
	{ 0x109b, 7, 5, 0 },
	{ 0x10ab, 7, 6, CYCLE_ADJ },
	{ 0x10bb, 8, 6, 0 },

	{ 0x02, 6, 6, 0 },					// AIM
	{ 0x62, 7, 7, CYCLE_ADJ },
	{ 0x72, 7, 7, 0 },

	{ 0x84, 2, 2, 0 },					// ANDA
	{ 0x94, 4, 3, 0 },
	{ 0xa4, 4, 4, CYCLE_ADJ },
	{ 0xb4, 5, 4, 0 },

	{ 0xc4, 2, 2, 0 },					// ANDB
	{ 0xd4, 4, 3, 0 },
	{ 0xe4, 4, 4, CYCLE_ADJ },
	{ 0xf4, 5, 4, 0 },

	{ 0x1c, 3, 2, 0 },					// ANDCC

	{ 0x1084, 5, 4, 0 },				// ANDD
	{ 0x1094, 7, 5, 0 },
	{ 0x10a4, 7, 6, CYCLE_ADJ },
	{ 0x10b4, 8, 6, 0 },

	{ 0x48, 2, 1, 0 },					// ASL
	{ 0x58, 2, 1, 0 },
	{ 0x1048, 3, 2, 0 },
	{ 0x08, 6, 5, 0 },
	{ 0x68, 6, 6, CYCLE_ADJ },
	{ 0x78, 7, 6, 0 },

	{ 0x47, 2, 1, 0 },					// ASR
	{ 0x57, 2, 1, 0 },
	{ 0x1047, 3, 2, 0 },
	{ 0x07, 6, 6, 0 },
	{ 0x67, 6, 6, CYCLE_ADJ },
	{ 0x77, 7, 6, 0 },

	{ 0x1130, 7, 6, 0 },				// BAND
	{ 0x1131, 7, 6, 0 },				// BIAND
	{ 0x1132, 7, 6, 0 },				// BOR
	{ 0x1133, 7, 6, 0 },				// BIOR
	{ 0x1134, 7, 6, 0 },				// BEOR
	{ 0x1135, 7, 6, 0 },				// BIEOR

	{ 0x85, 2, 2, 0 },					// BITA
	{ 0x95, 4, 3, 0 },
	{ 0xa5, 4, 4, CYCLE_ADJ },
	{ 0xb5, 5, 4, 0 },

	{ 0xc5, 2, 2, 0 },					// BITB
	{ 0xd5, 4, 3, 0 },
	{ 0xe5, 4, 4, CYCLE_ADJ },
	{ 0xf5, 5, 4, 0 },

	{ 0x1085, 5, 4, 0 },				// BITD
	{ 0x1095, 7, 5, 0 },
	{ 0x10a5, 7, 6, CYCLE_ADJ },
	{ 0x10b5, 8, 6, 0 },

	{ 0x113c, 4, 4, 0 },				// BITMD

	{ 0x20, 3, 3, 0 },					// BRA
	{ 0x21, 3, 3, 0 },
	{ 0x22, 3, 3, 0 },
	{ 0x23, 3, 3, 0 },
	{ 0x24, 3, 3, 0 },
	{ 0x25, 3, 3, 0 },
	{ 0x26, 3, 3, 0 },
	{ 0x27, 3, 3, 0 },
	{ 0x28, 3, 3, 0 },
	{ 0x29, 3, 3, 0 },
	{ 0x2a, 3, 3, 0 },
	{ 0x2b, 3, 3, 0 },
	{ 0x2c, 3, 3, 0 },
	{ 0x2d, 3, 3, 0 },
	{ 0x2e, 3, 3, 0 },
	{ 0x2f, 3, 3, 0 },

	{ 0x8d, 7, 6, 0 },					// BSR

	{ 0x4f, 2, 1, 0 },					// CLR
	{ 0x5f, 2, 1, 0 },
	{ 0x104f, 3, 2, 0 },
	{ 0x114f, 3, 2, 0 },
	{ 0x115f, 3, 2, 0 },
	{ 0x105f, 3, 2, 0 },
	{ 0x0f, 6, 5, 0 },
	{ 0x6f, 6, 6, CYCLE_ADJ },
	{ 0x7f, 7, 6, 0 },

	{ 0x81, 2, 2, 0 },					// CMPA
	{ 0x91, 4, 3, 0 },
	{ 0xa1, 4, 4, CYCLE_ADJ },
	{ 0xb1, 5, 4, 0 },

	{ 0xc1, 2, 2, 0 },					// CMPB
	{ 0xd1, 4, 3, 0 },
	{ 0xe1, 4, 4, CYCLE_ADJ },
	{ 0xf1, 5, 4, 0 },

	{ 0x1083, 5, 4, 0 },				// CMPD
	{ 0x1093, 7, 5, 0 },
	{ 0x10a3, 7, 6, CYCLE_ADJ },
	{ 0x10b3, 8, 6, 0 },

	{ 0x1081, 3, 3, 0 },				// CMPE
	{ 0x1091, 5, 4, 0 },
	{ 0x10a1, 5, 5, CYCLE_ADJ },
	{ 0x10b1, 6, 5, 0 },

	{ 0x10c1, 3, 3, 0 },				// CMPF
	{ 0x10d1, 5, 4, 0 },
	{ 0x10e1, 5, 5, CYCLE_ADJ },
	{ 0x10f1, 6, 5, 0 },

	{ 0x118c, 5, 4, 0 },				// CMPS
	{ 0x119c, 7, 5, 0 },
	{ 0x11ac, 7, 6, CYCLE_ADJ },
	{ 0x11bc, 8, 6, 0 },

	{ 0x1183, 5, 4, 0 },				// CMPU
	{ 0x1193, 7, 5, 0 },
	{ 0x11a3, 7, 6, CYCLE_ADJ },
	{ 0x11b3, 8, 6, 0 },

	{ 0x1181, 5, 4, 0 },				// CMPW
	{ 0x1191, 7, 5, 0 },
	{ 0x11a1, 7, 6, CYCLE_ADJ },
	{ 0x11b1, 8, 6, 0 },

	{ 0x8c, 4, 3, 0 },					// CMPX
	{ 0x9c, 6, 4, 0 },
	{ 0xac, 6, 5, CYCLE_ADJ },
	{ 0xbc, 7, 5, 0 },

	{ 0x108c, 5, 4, 0 },				// CMPY
	{ 0x109c, 7, 5, 0 },
	{ 0x10ac, 7, 6, CYCLE_ADJ },
	{ 0x10bc, 8, 6, 0 },

	{ 0x43, 2, 1, 0 },					// COMA
	{ 0x53, 2, 1, 0 },					// COMB
	{ 0x1043, 3, 2, 0 },				// COMD
	{ 0x1143, 3, 2, 0 },				// COME
	{ 0x1153, 3, 2, 0 },				// COMF
	{ 0x1053, 3, 2, 0 },				// COMW

	{ 0x03, 6, 5, 0 },					// COM
	{ 0x63, 6, 6, CYCLE_ADJ },
	{ 0x73, 7, 6, 0 },

	{ 0x3c, 22, 20, CYCLE_ESTIMATED },	// CWAI

	{ 0x19, 2, 1, 0 },					// DAA

	{ 0x4a, 2, 1, 0 },					// DECA
	{ 0x5a, 2, 1, 0 },					// DECB
	{ 0x104a, 3, 2, 0 },				// DECD
	{ 0x114a, 3, 2, 0 },				// DECE
	{ 0x115a, 3, 2, 0 },				// DECF
	{ 0x105a, 3, 2, 0 },				// DECW

	{ 0x0a, 6, 5, 0 },					// DEC
	{ 0x6a, 6, 6, CYCLE_ADJ },
	{ 0x7a, 7, 6, 0 },

	{ 0x118d, 25, 25, 0 },				// DIVD
	{ 0x119d, 27, 26, 0 },
	{ 0x11ad, 27, 27, CYCLE_ADJ },
	{ 0x11bd, 28, 27, 0 },

	{ 0x118e, 34, 34, 0 },				// DIVQ
	{ 0x119e, 36, 35, 0 },
	{ 0x11ae, 36, 36, 0 },
	{ 0x11be, 37, 36, 0 },

	{ 0x05, 6, 6, 0 },					// EIM
	{ 0x65, 7, 7, CYCLE_ADJ },
	{ 0x75, 7, 7, 0 },

	{ 0x88, 2, 2, 0 },					// EORA
	{ 0x98, 4, 3, 0 },
	{ 0xa8, 4, 4, CYCLE_ADJ },
	{ 0xb8, 5, 4, 0 },

	{ 0xc8, 2, 2, 0 },					// EORB
	{ 0xd8, 4, 3, 0 },
	{ 0xe8, 4, 4, CYCLE_ADJ },
	{ 0xf8, 5, 4, 0 },

	{ 0x1088, 5, 4, 0 },				// EORD
	{ 0x1098, 7, 5, 0 },
	{ 0x10a8, 7, 6, CYCLE_ADJ },
	{ 0x10b8, 8, 6, 0 },

	{ 0x1e, 8, 5, 0 },					// EXG

	{ 0x4c, 2, 1, 0 },					// INCA
	{ 0x5c, 2, 1, 0 },					// INCB
	{ 0x104c, 3, 2, 0 },				// INCD
	{ 0x114c, 3, 2, 0 },				// INCE
	{ 0x115c, 3, 2, 0 },				// INCF
	{ 0x105c, 3, 2, 0 },				// INCW

	{ 0x0c, 6, 5, 0 },					// INC
	{ 0x6c, 6, 6, CYCLE_ADJ },
	{ 0x7c, 7, 6, 0 },

	{ 0x0e, 3, 2, 0 },					// JMP
	{ 0x6e, 3, 3, CYCLE_ADJ },
	{ 0x7e, 4, 3, 0 },

	{ 0x9d, 7, 6, 0 },					// JSR
	{ 0xad, 7, 6, CYCLE_ADJ },
	{ 0xbd, 8, 7, 0 },

	{ 0x16, 5, 4, 0 },					// LBRA
	{ 0x17, 9, 7, 0 },					// LBSR
	{ 0x1021, 5, 5, 0 },				// LBRN
	{ 0x1022, 5, 5, 0 },				// remaining long branches are estimated on 6809 only:
	{ 0x1023, 5, 5, 0 },				//
	{ 0x1024, 5, 5, 0 },				// 6809: 5 cycles, +1 cycle if the branch is taken
	{ 0x1025, 5, 5, 0 },				// 6309 native: always 5 cycles
	{ 0x1026, 5, 5, 0 },				//
	{ 0x1027, 5, 5, 0 },				// this is handled as a special case elsewhere
	{ 0x1028, 5, 5, 0 },		
	{ 0x1029, 5, 5, 0 },		
	{ 0x102a, 5, 5, 0 },
	{ 0x102b, 5, 5, 0 },
	{ 0x102c, 5, 5, 0 },
	{ 0x102d, 5, 5, 0 },
	{ 0x102e, 5, 5, 0 },
	{ 0x102f, 5, 5, 0 },

	{ 0x86, 2, 2, 0 },					// LDA
	{ 0x96, 4, 3, 0 },
	{ 0xa6, 4, 4, CYCLE_ADJ },
	{ 0xb6, 5, 4, 0 },

	{ 0xc6, 2, 2, 0 },					// LDB
	{ 0xd6, 4, 3 },
	{ 0xe6, 4, 4, CYCLE_ADJ },
	{ 0xf6, 5, 4, 0 },

	{ 0x1136, 7, 6, 0 },				// LDBT

	{ 0xcc, 3, 3, 0 },					// LDD
	{ 0xdc, 5, 4, 0 },
	{ 0xec, 5, 5, CYCLE_ADJ },
	{ 0xfc, 6, 5, 0 },

	{ 0x1186, 3, 3, 0 },				// LDE
	{ 0x1196, 5, 4, 0 },
	{ 0x11a6, 5, 5, CYCLE_ADJ },
	{ 0x11b6, 6, 5, 0 },

	{ 0x11c6, 3, 3, 0 },				// LDF
	{ 0x11d6, 5, 4, 0 },
	{ 0x11e6, 5, 5, CYCLE_ADJ },
	{ 0x11f6, 6, 5, 0 },

	{ 0xcd, 5, 5, 0 },					// LDQ
	{ 0x10dc, 8, 7, 0 },
	{ 0x10ec, 8, 8, CYCLE_ADJ },
	{ 0x10fc, 9, 8, 0 },

	{ 0x10ce, 4, 4, 0 },				// LDS
	{ 0x10de, 6, 5, 0 },
	{ 0x10ee, 6, 6, CYCLE_ADJ },
	{ 0x10fe, 7, 6, 0 },

	{ 0xce, 3, 3, 0 },					// LDU
	{ 0xde, 5, 4, 0 },
	{ 0xee, 5, 5, CYCLE_ADJ },
	{ 0xfe, 6, 5, 0 },

	{ 0x1086, 4, 4, 0 },				// LDW
	{ 0x1096, 6, 5, 0 },
	{ 0x10a6, 6, 6, CYCLE_ADJ },
	{ 0x10b6, 7, 6, 0 },

	{ 0x8e, 3, 3, 0 },					// LDX
	{ 0x9e, 5, 4, 0 },
	{ 0xae, 5, 5, CYCLE_ADJ },
	{ 0xbe, 6, 5, 0 },

	{ 0x108e, 4, 4, 0 },				// LDY
	{ 0x109e, 6, 5, 0 },
	{ 0x10ae, 6, 6, CYCLE_ADJ },
	{ 0x10be, 7, 6, 0 },

	{ 0x113d, 5, 5, 0 },				// LDMD

	{ 0x30, 4, 4, CYCLE_ADJ },			// LEA
	{ 0x31, 4, 4, CYCLE_ADJ },
	{ 0x32, 4, 4, CYCLE_ADJ },
	{ 0x33, 4, 4, CYCLE_ADJ },

	{ 0x44, 2, 1, 0 },					// LSRA
	{ 0x54, 2, 1, 0 },					// LSRB
	{ 0x1044, 3, 2, 0 },				// LSRD
	{ 0x1054, 3, 2, 0 },				// LSRW

	{ 0x04, 6, 5, 0 },					// LSR
	{ 0x64, 6, 6, CYCLE_ADJ },
	{ 0x74, 7, 6, 0 },

	{ 0x3d, 11, 10, 0 },				// MUL

	{ 0x118f, 28, 28, 0 },				// MULD
	{ 0x119f, 30, 29, 0 },	
	{ 0x11af, 30, 30, CYCLE_ADJ },
	{ 0x11bf, 31, 30, 0 },

	{ 0x40, 2, 1, 0 },					// NEGA
	{ 0x50, 2, 1, 0 },					// NEGB
	{ 0x1040, 3, 2, 0 },				// NEGD

	{ 0x00, 6, 5, 0 },					// NEG
	{ 0x60, 6, 6, CYCLE_ADJ },
	{ 0x70, 7, 6, 0 },

	{ 0x12, 2, 1, 0 },					// NOP

	{ 0x01, 6, 6, 0 },					// OIM
	{ 0x61, 7, 7, CYCLE_ADJ },
	{ 0x71, 7, 7, 0 },

	{ 0x8a, 2, 2, 0 },					// ORA
	{ 0x9a, 4, 3, 0 },
	{ 0xaa, 4, 4, CYCLE_ADJ },
	{ 0xba, 5, 4, 0 },

	{ 0xca, 2, 2, 0 },					// ORB
	{ 0xda, 4, 3, 0 },
	{ 0xea, 4, 4, CYCLE_ADJ },
	{ 0xfa, 5, 4, 0 },

	{ 0x1a, 3, 2, 0 },					// ORCC

	{ 0x108a, 5, 4, 0 },				// ORD
	{ 0x109a, 7, 5, 0 },
	{ 0x10aa, 7, 6, CYCLE_ADJ },
	{ 0x10ba, 8, 6, 0 },

	{ 0x34, 5, 4, CYCLE_ADJ },			// PSHS
	{ 0x36, 5, 4, CYCLE_ADJ },			// PSHU
	{ 0x35, 5, 4, CYCLE_ADJ },			// PULS
	{ 0x37, 5, 4, CYCLE_ADJ },			// PULU
	{ 0x1038, 6, 6, 0 },				// PSHSW
	{ 0x103a, 6, 6, 0 },				// PSHUW
	{ 0x1039, 6, 6, 0 },				// PULSW
	{ 0x103b, 6, 6, 0 },				// PULUW

	{ 0x49, 2, 1, 0 },					// ROLA
	{ 0x59, 2, 1, 0 },					// ROLB
	{ 0x1049, 3, 2, 0 },				// ROLD
	{ 0x1059, 3, 2, 0 },				// ROLW

	{ 0x09, 6, 5, 0 },					// ROL
	{ 0x69, 6, 6, CYCLE_ADJ },
	{ 0x79, 7, 6, 0 },

	{ 0x46, 2, 1, 0 },					// RORA
	{ 0x56, 2, 1, 0 },					// RORB
	{ 0x1046, 3, 2, 0 },				// RORD
	{ 0x1056, 3, 2, 0 },				// RORW

	{ 0x06, 6, 5, 0 },					// ROR
	{ 0x66, 6, 6, CYCLE_ADJ },
	{ 0x76, 7, 6, 0 },

	{ 0x3b, 6, 17, CYCLE_ESTIMATED },	// RTI

	{ 0x39, 5, 4, 0 },					// RTS

	{ 0x82, 2, 2, 0 },					// SBCA
	{ 0x92, 4, 3, 0 },
	{ 0xa2, 4, 4, CYCLE_ADJ },
	{ 0xb2, 5, 4, 0 },

	{ 0xc2, 2, 2, 0 },					// SBCB
	{ 0xd2, 4, 3, 0 },
	{ 0xe2, 4, 4, CYCLE_ADJ },
	{ 0xf2, 5, 4, 0 },

	{ 0x1082, 5, 4, 0 },				// SBCD
	{ 0x1092, 7, 5, 0 },
	{ 0x10a2, 7, 6, CYCLE_ADJ },
	{ 0x10b2, 8, 6, 0 },

	{ 0x1d, 2, 1, 0 },					// SEX
	{ 0x14, 4, 4, 0 },					// SEXW

	{ 0x97, 4, 3, 0 },					// STA
	{ 0xa7, 4, 4, CYCLE_ADJ },
	{ 0xb7, 5, 4, 0 },

	{ 0xd7, 4, 3, 0 },					// STB
	{ 0xe7, 4, 4, CYCLE_ADJ },
	{ 0xf7, 5, 4, 0 },

	{ 0x1137, 8, 7, 0 },				// STBT

	{ 0xdd, 5, 4, 0 },					// STD
	{ 0xed, 5, 5, CYCLE_ADJ },
	{ 0xfd, 6, 5, 0 },

	{ 0x1197, 5, 4, 0 },				// STE
	{ 0x11a7, 5, 5, CYCLE_ADJ },
	{ 0x11b7, 6, 5, 0 },

	{ 0x11d7, 5, 4, 0 },				// STF
	{ 0x11e7, 5, 5, CYCLE_ADJ },
	{ 0x11f7, 6, 5, 0 },

	{ 0x10dd, 8, 7, 0 },				// STQ
	{ 0x10ed, 8, 8, CYCLE_ADJ },
	{ 0x10fd, 9, 8, 0 },

	{ 0x10df, 6, 5, 0 },				// STS
	{ 0x10ef, 6, 6, CYCLE_ADJ },
	{ 0x10ff, 7, 6, 0 },

	{ 0xdf, 5, 4, 0 },					// STU
	{ 0xef, 5, 5, CYCLE_ADJ },
	{ 0xff, 6, 5, 0 },

	{ 0x1097, 6, 5, 0 },				// STW
	{ 0x10a7, 6, 6, CYCLE_ADJ },
	{ 0x10b7, 7, 6, 0 },

	{ 0x9f, 5, 4, 0 },					// STX
	{ 0xaf, 5, 5, CYCLE_ADJ },
	{ 0xbf, 6, 5, 0 },

	{ 0x109f, 6, 5, 0 },				// STY
	{ 0x10af, 6, 6, CYCLE_ADJ },
	{ 0x10bf, 7, 6, 0 },

	{ 0x80, 2, 2, 0 },					// SUBA
	{ 0x90, 4, 3, 0 },
	{ 0xa0, 4, 4, CYCLE_ADJ },
	{ 0xb0, 5, 4, 0 },

	{ 0xc0, 2, 2, 0 },					// SUBB
	{ 0xd0, 4, 3, 0 },
	{ 0xe0, 4, 4, CYCLE_ADJ },
	{ 0xf0, 5, 4, 0 },

	{ 0x83, 4, 3, 0 },					// SUBD
	{ 0x93, 6, 4, 0 },
	{ 0xa3, 6, 5, CYCLE_ADJ },
	{ 0xb3, 7, 5, 0 },

	{ 0x1180, 3, 3, 0 },				// SUBE
	{ 0x1190, 5, 4, 0 },
	{ 0x11a0, 5, 5, CYCLE_ADJ },
	{ 0x11b0, 6, 5, 0 },

	{ 0x11c0, 3, 3, 0 },				// SUBF
	{ 0x11d0, 5, 4, 0 },
	{ 0x11e0, 5, 5, CYCLE_ADJ },
	{ 0x11f0, 6, 5, 0 },

	{ 0x1080, 5, 4, 0 },				// SUBW
	{ 0x1090, 7, 5, 0 },
	{ 0x10a0, 7, 6, CYCLE_ADJ },
	{ 0x10b0, 8, 6, 0 },

	{ 0x3f, 19, 21, 0 },				// SWI
	{ 0x103f, 20, 22, 0 },				// SWI2
	{ 0x113f, 20, 22, 0 },				// SWI3

	{ 0x13, 2, 1, CYCLE_ESTIMATED },	// SYNC

	{ 0x1f, 6, 4, 0 },					// TFR

	{ 0x0b, 6, 6, CYCLE_ESTIMATED },	// TIM
	{ 0x6b, 7, 7, CYCLE_ADJ | CYCLE_ESTIMATED },
	{ 0x7b, 5, 5, CYCLE_ESTIMATED },

	{ 0x1138, 6, 6, CYCLE_ESTIMATED },	// TFM
	{ 0x1139, 6, 6, CYCLE_ESTIMATED },	
	{ 0x113a, 6, 6, CYCLE_ESTIMATED },	
	{ 0x113b, 6, 6, CYCLE_ESTIMATED },	

	{ 0x4d, 2, 1, 0 },					// TSTA
	{ 0x5d, 2, 1, 0 },					// TSTB
	{ 0x104d, 3, 2, 0 },				// TSTD
	{ 0x114d, 3, 2, 0 },				// TSTE
	{ 0x115d, 3, 2, 0 },				// TSTF
	{ 0x105d, 3, 2, 0 },				// TSTW

	{ 0x0d, 6, 4, 0 },					// TST
	{ 0x6d, 6, 5, CYCLE_ADJ },
	{ 0x7d, 7, 5, 0 },

	{ -1, -1 }
};

typedef struct
{
	int cycles_6809_indexed;
	int cycles_6309_indexed;
	int cycles_6809_indirect;
	int cycles_6309_indirect;
} indtab_t;

static indtab_t indtab[] =
{
	{ 2, 1, -1, -1, },	// 0000		,R+   
	{ 3, 2, 6, 6, },	// 0001		,R++	[,R++]
	{ 2, 1, -1, -1, },	// 0010		,-R   
	{ 3, 2, 6, 6, },	// 0011		,--R	[,--R]
	{ 0, 0, 3, 3, },	// 0100		,R		[,R]
	{ 1, 1, 4, 4, },	// 0101		B,R		[B,R]
	{ 1, 1, 4, 4, },	// 0110		A,R		[A,R]
	{ 1, 1, 1, 1, },	// 0111		E,R		[E,R]
	{ 1, 1, 4, 4, },	// 1000		n,R		[n,R]
	{ 4, 3, 7, 7, },	// 1001		n,R		[n,R]  (16 bit)
	{ 1, 1, 1, 1, },	// 1010		F,R		[F,R] 
	{ 4, 2, 4, 4, },	// 1011		D,R		[D,R] 
	{ 1, 1, 4, 4, },	// 1100		n,PC	[n,PC]
	{ 5, 3, 8, 8, },	// 1101		n,PC	[n,PC] (16 bit)
	{ 4, 1, 4, 4, },	// 1110		W,R		[W,R]
	{ -1, -1, 5, 5, },	// 1111				[n]	   (16 bit)
};

/* calculates additional ticks from post byte in both indexed and indirect modes */
int lwasm_cycle_calc_ind(line_t *cl)
{
	int pb = cl->pb;

	if ((pb & 0x80) == 0) /* 5 bit offset */
		return 1;

	if (pb & 0x10) /* indirect */
		return CURPRAGMA(cl, PRAGMA_6809) ? indtab[pb & 0xf].cycles_6809_indirect : indtab[pb & 0xf].cycles_6309_indirect;
	else
		return CURPRAGMA(cl, PRAGMA_6809) ? indtab[pb & 0xf].cycles_6809_indexed : indtab[pb & 0xf].cycles_6309_indexed;
}

/* calculate additional ticks from post byte in rlist (PSHS A,B,X...) */
int lwasm_cycle_calc_rlist(line_t *cl)
{
	int i, cycles = 0;

	for (i = 0; i < 8; i++)
	{
		// 1 cycle for 8 bit regs CC-DP (bits 0-3)
		// otherwise 2
		if (cl->pb & 1 << i)
			cycles += (i <= 3) ? 1 : 2;
	}

	return cycles;
}

void lwasm_cycle_update_count(line_t *cl, int opc)
{
	int i;
	for (i = 0; 1; i++)
	{
		if (cycletable[i].opc == -1) return;

		if (cycletable[i].opc == opc)
		{
			cl->cycle_base = CURPRAGMA(cl, PRAGMA_6809) ? cycletable[i].cycles_6809 : cycletable[i].cycles_6309;
			cl->cycle_flags = cycletable[i].flags;
			cl->cycle_adj = 0;

			// long branches are estimated on 6809
			if (CURPRAGMA(cl, PRAGMA_6809) && (opc >= 0x1022 && opc <= 0x102f))
				cl->cycle_flags |= CYCLE_ESTIMATED;

			return;
		}
	}
}