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* Andreas Boose <viceteam@t-online.de>
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* This file is part of VICE, the Versatile Commodore Emulator.
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* See README for copyright notice.
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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#include "drive-overflow.h"
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#include "drivetypes.h"
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#include "interrupt.h"
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static void drive_clk_overflow_callback(CLOCK sub, void *data)
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dnr = (unsigned int)data;
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drive = drive_context[dnr]->drive;
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if (drive->byte_ready_active == 0x06)
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rotation_rotate_disk(drive);
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rotation_overflow_callback(sub, dnr);
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if (drive->attach_clk > (CLOCK) 0)
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drive->attach_clk -= sub;
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if (drive->detach_clk > (CLOCK) 0)
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drive->detach_clk -= sub;
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if (drive->attach_detach_clk > (CLOCK) 0)
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drive->attach_detach_clk -= sub;
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alarm_context_time_warp(drive_context[dnr]->cpu->alarm_context, sub, -1);
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interrupt_cpu_status_time_warp(drive_context[dnr]->cpu->int_status, sub,
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void drive_overflow_init(void)
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for (dnr = 0; dnr < DRIVE_NUM; dnr++) {
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clk_guard_add_callback(drive_context[dnr]->cpu->clk_guard,
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drive_clk_overflow_callback, (void *)dnr);