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/projects/cubeos/src_current/hardware/mc68681.h

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/*  src_experimental/hardware/mc68681.h
    CubeOS Version 0.4.90 experimental
    Copyright (C) 1999,2000 Holger Kenn

    CubeOS is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or any later version.

    CubeOS 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
    Library General Public License for more details.

*/  
/* mc68681.h -- Motorola mc68681 DUART register offsets. */

#define DUART_ADDR(nr) (DUART_BASE + nr)

#define DUART_MR1A      DUART_ADDR(0x00)  // Mode Register A 
#define DUART_MR2A      DUART_ADDR(0x00)  // Mode Register A 
#define DUART_SRA       DUART_ADDR(0x01)  // Status Register A 
#define DUART_CSRA      DUART_ADDR(0x01)  // Clock-Select Register A 
#define DUART_CRA       DUART_ADDR(0x02)  // Command Register A 
#define DUART_RBA       DUART_ADDR(0x03)  // Receive Buffer A 
#define DUART_TBA       DUART_ADDR(0x03)  // Transmit Buffer A 
#define DUART_IPCR      DUART_ADDR(0x04)  // Input Port Change Register 
#define DUART_ACR       DUART_ADDR(0x04)  // Auxiliary Control Register 
#define DUART_ISR       DUART_ADDR(0x05)  // Interrupt Status Register 
#define DUART_IMR       DUART_ADDR(0x05)  // Interrupt Mask Register 
#define DUART_CUR       DUART_ADDR(0x06)  // Counter Mode: current MSB 
#define DUART_CTUR      DUART_ADDR(0x06)  // Counter/Timer upper reg 
#define DUART_CLR       DUART_ADDR(0x07)  // Counter Mode: current LSB 
#define DUART_CTLR      DUART_ADDR(0x07)  // Counter/Timer lower reg 
#define DUART_MR1B      DUART_ADDR(0x08)  // Mode Register B 
#define DUART_MR2B      DUART_ADDR(0x08)  // Mode Register B 
#define DUART_SRB       DUART_ADDR(0x09)  // Status Register B 
#define DUART_CSRB      DUART_ADDR(0x09)  // Clock-Select Register B 
#define DUART_CRB       DUART_ADDR(0x0A)  // Command Register B 
#define DUART_RBB       DUART_ADDR(0x0B)  // Receive Buffer B 
#define DUART_TBB       DUART_ADDR(0x0B)  // Transmit Buffer A 
#define DUART_IVR       DUART_ADDR(0x0C)  // Interrupt Vector Register 
#define DUART_IP        DUART_ADDR(0x0D)  // Input Port 
#define DUART_OPCR      DUART_ADDR(0x0D)  // Output Port Configuration Reg. 
#define DUART_STRTCC    DUART_ADDR(0x0E)  // Start-Counter command 
#define DUART_OPRSET    DUART_ADDR(0x0E)  // Output Port Reg, SET bits 
#define DUART_STOPCC    DUART_ADDR(0x0F)  // Stop-Counter command 
#define DUART_OPRRST    DUART_ADDR(0x0F)  // Output Port Reg, ReSeT bits 

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