72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
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/*
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* libtilemcore - Graphing calculator emulation library
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*
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* Copyright (C) 2001 Solignac Julien
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* Copyright (C) 2004-2011 Benjamin Moody
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <stdio.h>
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#include <tilem.h>
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#include "x1.h"
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void x1_z80_wrmem(TilemCalc* calc, dword A, byte v)
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{
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dword pa = 0x4000 * calc->mempagemap[(A)>>14] + (A & 0x3FFF);
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if (pa >= 0x8000) {
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*(calc->mem + 0x8000 + (pa & 0x1fff)) = v;
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if ((((pa - 0x8000 - calc->lcd.addr) >> 6)
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< (unsigned) calc->lcd.rowstride)
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&& calc->hwregs[HW_VERSION] < 2)
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calc->z80.lastlcdwrite = calc->z80.clock;
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}
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}
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byte x1_z80_rdmem(TilemCalc* calc, dword A)
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{
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dword pa = 0x4000 * calc->mempagemap[(A)>>14] + (A & 0x3FFF);
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if (pa >= 0x8000)
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return (*(calc->mem + 0x8000 + (pa & 0x1fff)));
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else
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return (*(calc->mem + (pa & 0x7fff)));
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}
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dword x1_mem_ltop(TilemCalc* calc, dword A)
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{
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dword pa = 0x4000 * calc->mempagemap[(A)>>14] + (A & 0x3FFF);
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if (pa >= 0x8000)
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return (0x8000 + (pa & 0x1fff));
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else
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return (pa);
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}
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dword x1_mem_ptol(TilemCalc* calc TILEM_ATTR_UNUSED, dword A)
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{
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if (A & 0x8000)
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return (0xE000 + (A & 0x1fff));
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else
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return (A);
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}
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