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FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/lindev/@/dev/ic/via6522reg.h |
/* * Copyright 2004 by Peter Grehan. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD: release/9.1.0/sys/dev/ic/via6522reg.h 153030 2005-12-02 22:36:14Z grehan $ */ #ifndef _VIA6522REG_H_ #define _VIA6522REG_H_ /* Registers */ #define REG_OIRB 0 /* Input/output register B */ #define REG_OIRA 1 /* Input/output register A */ #define REG_DDRB 2 /* Data direction register B */ #define REG_DDRA 3 /* Data direction register A */ #define REG_T1CL 4 /* T1 low-order latch/low-order counter */ #define REG_T1CH 5 /* T1 high-order counter */ #define REG_T1LL 6 /* T1 low-order latches */ #define REG_T1LH 7 /* T1 high-order latches */ #define REG_T2CL 8 /* T2 low-order latch/low-order counter */ #define REG_T2CH 9 /* T2 high-order counter */ #define REG_SR 10 /* Shift register */ #define REG_ACR 11 /* Auxiliary control register */ #define REG_PCR 12 /* Peripheral control register */ #define REG_IFR 13 /* Interrupt flag register */ #define REG_IER 14 /* Interrupt-enable register */ #define REG_OIRA_NH 15 /* Input/output register A: no handshake */ /* Auxiliary control register (11) */ #define ACR_SR_NONE 0x0 /* Disabled */ #define ACR_SR_DIR 0x4 /* Bit for shift-register direction 1=out */ #define ACR_SRI_T2 0x1 /* Shift in under control of T2 */ #define ACR_SRI_PHI2 0x2 /* " " " " " PHI2 */ #define ACR_SRI_EXTCLK 0x3 /* " " " " " external clk */ #define ACR_SRO 0x4 /* Shift out free running at T2 rate */ #define ACR_SRO_T2 0x5 /* Shift out under control of T2 */ #define ACR_SRO_PHI2 0x6 /* " " " " " PHI2 */ #define ACR_SRO_EXTCLK 0x7 /* " " " " " external clk */ #define ACR_T1_SHIFT 5 /* bits 7-5 */ #define ACR_SR_SHIFT 2 /* bits 4-2 */ /* Peripheral control register (12) */ #define PCR_INTCNTL 0x01 /* interrupt active edge: +ve=1, -ve=0 */ #define PCR_CNTL_MASK 0x3 /* 3 bits */ #define PCR_CNTL_NEDGE 0x0 /* Input - negative active edge */ #define PCR_CNTL_INEDGE 0x1 /* Interrupt - negative active edge */ #define PCR_CNTL_PEDGE 0x2 /* Input - positive active edge */ #define PCR_CNTL_IPEDGE 0x3 /* Interrupt - positive active edge */ #define PCR_CNTL_HSHAKE 0x4 /* Handshake output */ #define PCR_CNTL_PULSE 0x5 /* Pulse output */ #define PCR_CNTL_LOW 0x6 /* Low output */ #define PCR_CNTL_HIGH 0x7 /* High output */ #define PCR_CB2_SHIFT 5 /* bits 7-5 */ #define PCR_CB1_SHIFT 4 /* bit 4 */ #define PCR_CA2_SHIFT 1 /* bits 3-1 */ #define PCR_CA1_SHIFT 0 /* bit 0 */ /* Interrupt flag register (13) */ #define IFR_CA2 0x01 #define IFR_CA1 0x02 #define IFR_SR 0x04 #define IFR_CB2 0x08 #define IFR_CB1 0x10 #define IFR_T2 0x20 #define IFR_T1 0x40 #define IFR_IRQB 0x80 /* status of IRQB output pin */ /* Interrupt enable register (14) */ #define IER_CA2 IFR_CA2 #define IER_CA1 IFR_CA1 #define IER_SR IFR_SR #define IER_CB2 IFR_CB2 #define IER_CB1 IFR_CB1 #define IER_T2 IFR_T2 #define IER_T1 IFR_T1 #define IER_IRQB IFR_IRQB #endif /* _VIA6522REG_H_ */