root/as6502/bcc.hpp

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DEFINITIONS

This source file includes following definitions.
  1. strcmp

// ---------------------------------------------------
// bcc.hpp      22-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/>.
//

// 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 address 7 g_ucBytes before the branch instruction

        if(0 == strcmp(strupr(g_szOpcode),"BCC")) {
                fprintf(g_flog,"Processing 6502 BCC g_szOpcode\n");
                g_ucBytes[g_iBytesIndex++] = 0x90;
                g_iLineType = TYPE_6502;
                g_iErrorNo ^= ERROR_UNKOP;
                #include "_bshort.hpp"
        }


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