jcs.org
fork of PCE focusing on macplus, supporting DaynaPort SCSI network emulation
1/*****************************************************************************
2 * pce *
3 *****************************************************************************/
4
5/*****************************************************************************
6 * File name: src/cpu/e6502/internal.h *
7 * Created: 2004-05-23 by Hampa Hug <hampa@hampa.ch> *
8 * Copyright: (C) 2004-2011 Hampa Hug <hampa@hampa.ch> *
9 *****************************************************************************/
10
11/*****************************************************************************
12 * This program is free software. You can redistribute it and / or modify it *
13 * under the terms of the GNU General Public License version 2 as published *
14 * by the Free Software Foundation. *
15 * *
16 * This program is distributed in the hope that it will be useful, but *
17 * WITHOUT ANY WARRANTY, without even the implied warranty of *
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General *
19 * Public License for more details. *
20 *****************************************************************************/
21
22
23#ifndef PCE_E6502_INTERNAL_H
24#define PCE_E6502_INTERNAL_H 1
25
26
27#include "e6502.h"
28
29
30#define e6502_set_clk(cpu, cnt, clk) do { \
31 (cpu)->pc = ((cpu)->pc + (cnt)) & 0xffff; \
32 (cpu)->delay += (clk); \
33 } while (0)
34
35#define e6502_get_inst1(c) do { \
36 (c)->inst[1] = e6502_get_mem8 (c, (c->pc + 1) & 0xffff); \
37 } while (0)
38
39#define e6502_get_inst2(c) do { \
40 (c)->inst[1] = e6502_get_mem8 (c, (c->pc + 1) & 0xffff); \
41 (c)->inst[2] = e6502_get_mem8 (c, (c->pc + 2) & 0xffff); \
42 } while (0)
43
44#define e6502_mk_uint16(lo, hi) \
45 ((((hi) & 0xff) << 8) + ((lo) & 0xff))
46
47#define e6502_mk_sint16(lo) \
48 (((lo) & 0x80) ? ((lo) | 0xff00) : ((lo) & 0xff))
49
50
51#define e6502_get_idx_ind_x(c) e6502_get_mem8 (c, e6502_get_ea_idx_ind_x (c))
52#define e6502_get_zpg(c) e6502_get_mem8 (c, e6502_get_ea_zpg (c))
53#define e6502_get_abs(c) e6502_get_mem8 (c, e6502_get_ea_abs (c))
54#define e6502_get_ind_idx_y(c) e6502_get_mem8 (c, e6502_get_ea_ind_idx_y (c))
55#define e6502_get_zpg_x(c) e6502_get_mem8 (c, e6502_get_ea_zpg_x (c))
56#define e6502_get_zpg_y(c) e6502_get_mem8 (c, e6502_get_ea_zpg_y (c))
57#define e6502_get_abs_y(c) e6502_get_mem8 (c, e6502_get_ea_abs_y (c))
58#define e6502_get_abs_x(c) e6502_get_mem8 (c, e6502_get_ea_abs_x (c))
59#define e6502_set_ea(c, v) e6502_set_mem8 ((c), (c)->ea, (v))
60
61
62int e6502_hook_all (e6502_t *c);
63int e6502_hook_undefined (e6502_t *c);
64int e6502_hook_brk (e6502_t *c);
65
66
67unsigned char e6502_get_imm (e6502_t *c);
68unsigned short e6502_get_ea_idx_ind_x (e6502_t *c);
69unsigned short e6502_get_ea_zpg (e6502_t *c);
70unsigned short e6502_get_ea_abs (e6502_t *c);
71unsigned short e6502_get_ea_ind_idx_y (e6502_t *c);
72unsigned short e6502_get_ea_zpg_x (e6502_t *c);
73unsigned short e6502_get_ea_zpg_y (e6502_t *c);
74unsigned short e6502_get_ea_abs_y (e6502_t *c);
75unsigned short e6502_get_ea_abs_x (e6502_t *c);
76
77
78extern e6502_opcode_f e6502_opcodes[256];
79
80unsigned char e6502_pull (e6502_t *c);
81unsigned short e6502_pull16 (e6502_t *c);
82void e6502_push (e6502_t *c, unsigned char val);
83void e6502_push16 (e6502_t *c, unsigned short val);
84void e6502_trap (e6502_t *c, unsigned short addr);
85
86
87#endif