This is via.h in view mode; [Download] [Up]
/* * via.h - VIA emulation. * * Written by * André Fachat (fachat@physik.tu-chemnitz.de) * * This file is part of VICE, the Versatile Commodore Emulator. * See README for copyright notice. * * This program 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 2 of the License, or * (at your option) any later version. * * This program 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 this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA * 02111-1307 USA. * */ #ifndef _VIA_H #define _VIA_H /* MOS 6522 registers */ #define VIA_PRB 0 /* Port B */ #define VIA_PRA 1 /* Port A */ #define VIA_DDRB 2 /* Data direction register for port B */ #define VIA_DDRA 3 /* Data direction register for port A */ #define VIA_T1CL 4 /* Timer 1 count low */ #define VIA_T1CH 5 /* Timer 1 count high */ #define VIA_T1LL 6 /* Timer 1 latch low */ #define VIA_T1LH 7 /* Timer 1 latch high */ #define VIA_T2CL 8 /* Timer 2 count low - read only */ #define VIA_T2LL 8 /* Timer 2 latch low - write only */ #define VIA_T2CH 9 /* Timer 2 latch/count high */ #define VIA_SR 10 /* Serial port shift register */ #define VIA_ACR 11 /* Auxiliary control register */ #define VIA_PCR 12 /* Peripheral control register */ #define VIA_IFR 13 /* Interrupt flag register */ #define VIA_IER 14 /* Interrupt control register */ #define VIA_PRA_NHS 15 /* Port A with no handshake */ /* * Interrupt Masks */ /* MOS 6522 */ #define VIA_IM_IRQ 128 /* Control Bit */ #define VIA_IM_T1 64 /* Timer 1 underflow */ #define VIA_IM_T2 32 /* Timer 2 underflow */ #define VIA_IM_CB1 16 /* Handshake */ #define VIA_IM_CB2 8 /* Handshake */ #define VIA_IM_SR 4 /* Shift Register completion */ #define VIA_IM_CA1 2 /* Handshake */ #define VIA_IM_CA2 1 /* Handshake */ /* * signal values (for signaling edges on the control lines) */ #define VIA_SIG_CA1 0 #define VIA_SIG_CA2 1 #define VIA_SIG_CB1 2 #define VIA_SIG_CB2 3 #define VIA_SIG_FALL 0 #define VIA_SIG_RISE 1 #endif /* _VIA_H */
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.