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https://git.code.sf.net/p/fuse-emulator/fuse
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45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
/* ula.h: ULA routines
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Copyright (c) 1999-2016 Philip Kendall, Darren Salt
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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 along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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Author contact information:
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E-mail: philip-fuse@shadowmagic.org.uk
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*/
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#ifndef FUSE_ULA_H
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#define FUSE_ULA_H
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#define ULA_CONTENTION_SIZE 80000
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/* How much contention do we get at every tstate when MREQ is active? */
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extern libspectrum_byte ula_contention[ ULA_CONTENTION_SIZE ];
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/* And how much when it is inactive */
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extern libspectrum_byte ula_contention_no_mreq[ ULA_CONTENTION_SIZE ];
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void ula_register_startup( void );
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libspectrum_byte ula_last_byte( void );
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libspectrum_byte ula_tape_level( void );
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void ula_contend_port_early( libspectrum_word port );
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void ula_contend_port_late( libspectrum_word port );
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#endif /* #ifndef FUSE_ULA_H */
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