1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
/*
* Simulator of microcontrollers (regsstm8.h)
*
* some z80 code base from Karl Bongers karl@turbobit.com
*
* Copyright (C) 1999,99 Drotos Daniel, Talker Bt.
*
* To contact author send email to drdani@mazsola.iit.uni-miskolc.hu
*
*/
/* This file is part of microcontroller simulator: ucsim.
UCSIM 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.
UCSIM 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 UCSIM; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
/*@1@*/
#ifndef REGSTM8_HEADER
#define REGSTM8_HEADER
#include "ddconfig.h"
struct t_regs
{
u8_t A;
u16_t X;
u16_t Y;
u16_t SP;
u8_t CC;
//u8_t VECTOR;
};
#define BIT_C 0x01 // carry status(out of bit 7)
#define BIT_Z 0x02 // zero status, 1=zero, 0=nonzero
#define BIT_N 0x04 // sign, 1=negative, 0=positive (or zero)
#define BIT_I0 0x08 // interrupt mask, 1=disabled, 0=enabled
#define BIT_H 0x10 // half carry status(out of bit 3)
#define BIT_I1 0x20 // interrupt mask, 1=disabled, 0=enabled
#define BIT_V 0x80 // signed overflow, 1=overflow
#define BIT_ALL (BIT_C |BIT_Z |BIT_N |BIT_I0 |BIT_H |BIT_I1 |BIT_V) // all bits
#define BITPOS_C 0 // 1
#define BITPOS_Z 1 // 2H
#define BITPOS_N 2 // 4H
#define BITPOS_I0 3 // 8H
#define BITPOS_H 4 // 10H
#define BITPOS_I1 5 // 20H
#define BITPOS_V 7 // 80H
#endif
/* End of stm8.src/regsstm8.h */
|