@ GNU AS assembler header file for OSSerialOp
@ Written by DefMod (Dec  9 2012) on Sun Dec  9 15:49:36 2012
@ Jonathan Coxhead, jonathan@doves.demon.co.uk, 29 June 1995

@ OSLib---efficient, type-safe, transparent, extensible,
@ register-safe API coverage of RISC OS
@ 
@ Copyright (c) 1994-2012 Jonathan Coxhead and OSLib maintainers
@ 
@ Licence:
@ 
@    OSLib 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 1, or (at your option)
@ any later version - and this with the following clarification and
@ special exception:
@ 
@    Linking this library statically or dynamically with other modules
@ is making a combined work based on this library. Thus, the terms
@ and conditions of the GNU General Public License cover the whole
@ combination.
@ 
@    As a special exception, the copyright holders of this library
@ give you permission to link this library with independent modules
@ to produce an executable, regardless of the license terms of these
@ independent modules, and to copy and distribute the resulting
@ executable under terms of your choice, provided that you also meet,
@ for each linked independent module, the terms and conditions of the
@ license of that module. An independent module is a module which is
@ not derived from or based on this library. If you modify this
@ library, you may extend this exception to your version of the library,
@ but you are not obliged to do so. If you do not wish to do so, delete
@ this exception statement from your version.
@ 
@    OSLib 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 programme; if not, write to the Free Software
@ Foundation, Inc, 675 Mass Ave, Cambridge, MA 02139, USA.

#ifndef OSSerialOp_Hdr
#  define OSSerialOp_Hdr

#  ifndef Get_Types
#    define Get_Types
#    include "oslib/Types.Hdr"
#  endif

#  ifndef Get_OS
#    define Get_OS
#    include "oslib/OS.Hdr"
#  endif

@Symbols for constants
#  define OSSerialOp_RS423ParityError 0x20
#  define OSSerialOp_RS423OverrunError 0x10
#  define OSSerialOp_RS423FramingError 0x8
#  define OSSerialOp_DataFormatWordSize 0x3
#  define OSSerialOp_DataFormatWordSizeShift 0x0
#  define OSSerialOp_DataFormatWordSize8Bit 0x0
#  define OSSerialOp_DataFormatWordSize7Bit 0x1
#  define OSSerialOp_DataFormatWordSize6Bit 0x3
#  define OSSerialOp_DataFormatExtraStopBits 0x4
#  define OSSerialOp_DataFormatParityEnable 0x8
#  define OSSerialOp_DataFormatParity 0x30
#  define OSSerialOp_DataFormatParityShift 0x4
#  define OSSerialOp_DataFormatParityOdd 0x0
#  define OSSerialOp_DataFormatParityEven 0x1
#  define OSSerialOp_DataFormatParity1 0x2
#  define OSSerialOp_DataFormatParity0 0x3
#  define OSSerialOp_BaudRate9600 0x7
#  define OSSerialOp_BaudRate75 0x1
#  define OSSerialOp_BaudRate150 0x2
#  define OSSerialOp_BaudRate300 0x3
#  define OSSerialOp_BaudRate1200 0x4
#  define OSSerialOp_BaudRate2400 0x5
#  define OSSerialOp_BaudRate4800 0x6
#  define OSSerialOp_BaudRate19200 0x8
#  define OSSerialOp_BaudRate50 0x9
#  define OSSerialOp_BaudRate110 0xa
#  define OSSerialOp_BaudRate134pt5 0xb
#  define OSSerialOp_BaudRate600 0xc
#  define OSSerialOp_BaudRate1800 0xd
#  define OSSerialOp_BaudRate3600 0xe
#  define OSSerialOp_BaudRate7200 0xf
#  define OSSerialOp_BaudRate38400 0x10
#  define OSSerialOp_BaudRate57600 0x11
#  define OSSerialOp_BaudRate115200 0x12

@Symbols for structure offsets and sizes
        .struct 0
        .skip   Bits
OSSerialOp_RS423Status         : 

        .struct 0
        .skip   Bits
OSSerialOp_FormatFlags         : 

        .struct 0
        .skip   Int
OSSerialOp_BaudRate            : 


@Symbols for SWI's and SWI reason codes
.set XOS_SerialOp,0x20057
.set OS_SerialOp,0x57

#  define OSSerialOp_Status 0x0
   @Entry
   @  R0 = &0
   @  R1 = eor_mask (Bits)
   @  R2 = and_mask (Bits)
   @Exit
   @  R1 = old_value (Bits)
   @  R2 = new_value (Bits)

#  define OSSerialOp_DataFormat 0x1
   @Entry
   @  R0 = &1
   @  R1 = data_format (OSSerialOp_FormatFlags)
   @Exit
   @  R1 = old_value (OSSerialOp_FormatFlags)

#  define OSSerialOp_Break 0x2
   @Entry
   @  R0 = &2
   @  R1 = period (Int)

#  define OSSerialOp_BPut 0x3
   @Entry
   @  R0 = &3
   @  R1 = c (Byte)

#  define OSSerialOp_BGet 0x4
   @Entry
   @  R0 = &4
   @Exit
   @  R1 = c (Byte)

#  define OSSerialOp_RxBaudRate 0x5
   @Entry
   @  R0 = &5
   @  R1 = rx_rate (OSSerialOp_BaudRate)
   @Exit
   @  R1 = old_rx_rate (OSSerialOp_BaudRate)

#  define OSSerialOp_TxBaudRate 0x6
   @Entry
   @  R0 = &6
   @  R1 = tx_rate (OSSerialOp_BaudRate)
   @Exit
   @  R1 = old_tx_rate (OSSerialOp_BaudRate)

#  define OSSerialOp_RxThreshold 0x8
   @Entry
   @  R0 = &8
   @  R1 = rx_threshold (Bits)
   @Exit
   @  R1 = old_rx_threshold (Bits)

#  define OSSerialOp_EnumerateBaudRates 0x9
   @Entry
   @  R0 = &9
   @Exit
   @  R1 -> table (Int)
   @  R2 = table_size (Int)

#  define SerialV 0x24

#  define Event_RS423Error 0x7
   @Entry
   @  R0 = &7
   @  R1 = status (OSSerialOp_RS423Status)
   @  R2 = b (Byte)

#endif
