// ---------------------------------------------------
// asdec65.hpp 25-Feb-11 Running on Mac OS X 10.6.6
// S/n 2011-1042-654321 Written by Douglas W. Goodall
// Copyright(c)2011 Douglas W. Goodall, United States.
// ---------------------------------------------------
// This file is part of Vintage Modern Assembler Plus Tools.
//
// VMAPT 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.
//
// VMAPT 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 VMAPT. If not, see <http://www.gnu.org/licenses/>.
//
static char szAsdec65Hpp[] = "$Id: asdec65.hpp,v 1.1 2011/03/24 11:58:05 doug Exp $";
/*
When calculating branches a forward branch of 6 skips the following 6 g_ucBytes so, effectively the program counter points to the address that is 8 g_ucBytes beyond the address of the branch g_szOpcode; and a backward branch of $FA (256-6) goes to an add
ress 7 g_ucBytes before the branch instruction
*/
void decode_6502(void)
{
int rc;
unsigned int value;
// The strupr function happens to fold
// strings. This code preserves the
// orginal case, to be restored after
// g_szOpcode processing (see below)
strcpy(g_szRawLabel,g_szLabel);
strcpy(g_szRawOpcode,g_szOpcode);
strcpy(g_szRawParms,g_szParms);
strcpy(g_szRawComments,g_szComments);
if( (strlen(g_szLabel)==0) && (strlen(g_szOpcode)==0) &&
(strlen(g_szParms)==0) && (strlen(g_szComments)>0) ) {
g_iLineType = TYPE_COMMENT;
g_iErrorNo ^= ERROR_UNKOP;
}
if( (strlen(g_szLabel)==0) && (strlen(g_szOpcode)==0) &&
(strlen(g_szParms)==0) && (strlen(g_szComments)==0) ) {
g_iLineType = TYPE_EMPTY;
g_iErrorNo ^= ERROR_UNKOP;
}
//#ifdef NEVER
if(0 < strlen(g_szOpcode)) {
#include "as6502/decoincl.hpp"
}
//#endif
// This code restores the original case of
// strings that were unintentionally folded
// to upper case by strupr function.
strcpy(g_szLabel,g_szRawLabel);
strcpy(g_szOpcode,g_szRawOpcode);
strcpy(g_szParms,g_szRawParms);
strcpy(g_szComments,g_szRawComments);
}
// eof - asdec65.hpp