1 /*------------------------------------------------------------------------- 2 at89Sx051.h - Register Declarations for Atmel AT89S2051 and AT89S4051 3 Processors 4 5 Copyright (C) 2009, Ben Boeckel mathstuf AT gmail.com 6 7 This library is free software; you can redistribute it and/or modify it 8 under the terms of the GNU General Public License as published by the 9 Free Software Foundation; either version 2, or (at your option) any 10 later version. 11 12 This library is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this library; see the file COPYING. If not, write to the 19 Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston, 20 MA 02110-1301, USA. 21 22 As a special exception, if you link this library with other files, 23 some of which are compiled with SDCC, to produce an executable, 24 this library does not by itself cause the resulting executable to 25 be covered by the GNU General Public License. This exception does 26 not however invalidate any other reasons why the executable file 27 might be covered by the GNU General Public License. 28 -------------------------------------------------------------------------*/ 29 30 /*------------------------------------------------------------------------- 31 based on 8051.h (8051.h must be in mcs51 subdirectory) 32 33 KEIL C compatible definitions are included 34 -------------------------------------------------------------------------*/ 35 36 #ifndef AT89Sx051_H 37 #define AT89Sx051_H 38 39 #include <at89x051.h> /* at89Sx051 adds to at89Cx051 definitions */ 40 41 /* BYTE Register */ 42 __sfr __at (0x8F) CLKREG ; 43 __sfr __at (0x97) ACSR ; 44 __sfr __at (0xA9) SADDR ; 45 __sfr __at (0xB7) IPH ; 46 __sfr __at (0xB9) SADEN ; 47 48 /* BIT register */ 49 /* IE */ 50 __sbit __at (0xAE) EC ; 51 52 /* IP */ 53 __sbit __at (0xBE) PC ; 54 55 /* BIT definitions for bits that are not directly accessible */ 56 /* PCON */ 57 #define PWMEN 0x20 58 #define SMOD0 0x40 59 #define SMOD1 0x80 60 61 /* CLKREG */ 62 #define X2 0x01 63 #define PWDEX 0x02 64 65 /* ACSR */ 66 #define CM0 0x01 67 #define CM1 0x02 68 #define CM2 0x04 69 #define CEN 0x08 70 #define CF 0x10 71 72 /* IPH */ 73 #define PX0H 0x01 74 #define PT0H 0x02 75 #define PX1H 0x04 76 #define PT1H 0x08 77 #define PSH 0x10 78 #define PCH 0x40 79 80 81 /* Interrupt numbers: address = (number * 8) + 3 */ 82 #define CF0_VECTOR 6 /* 0x33 analog comparator */ 83 84 #endif 85