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|
/***************************************************************************
Atari 400/800
Machine driver
Juergen Buchmueller, June 1998
***************************************************************************/
#include "driver.h"
#include "cpu/m6502/m6502.h"
#include "includes/atari.h"
#include "sound/pokey.h"
#include "machine/6821pia.h"
#include "sound/dac.h"
#include "video/gtia.h"
#define VERBOSE_POKEY 0
#define VERBOSE_SERIAL 0
#define VERBOSE_TIMERS 0
//#define LOG(x) if (errorlog) fprintf x
static int atari = 0;
#define ATARI_5200 0
#define ATARI_400 1
#define ATARI_800 2
#define ATARI_600XL 3
#define ATARI_800XL 4
#ifdef MESS
static int a800_cart_loaded = 0;
static int a800_cart_is_16k = 0;
#endif
static void a800xl_mmu(UINT8 new_mmu);
static void a600xl_mmu(UINT8 new_mmu);
static void pokey_reset(running_machine *machine);
void atari_interrupt_cb(int mask)
{
#if VERBOSE_POKEY
if (mask & 0x80)
logerror("atari interrupt_cb BREAK\n");
if (mask & 0x40)
logerror("atari interrupt_cb KBCOD\n");
#endif
#if VERBOSE_SERIAL
if (mask & 0x20)
logerror("atari interrupt_cb SERIN\n");
if (mask & 0x10)
logerror("atari interrupt_cb SEROR\n");
if (mask & 0x08)
logerror("atari interrupt_cb SEROC\n");
#endif
#if VERBOSE_TIMERS
if (mask & 0x04)
logerror("atari interrupt_cb TIMR4\n");
if (mask & 0x02)
logerror("atari interrupt_cb TIMR2\n");
if (mask & 0x01)
logerror("atari interrupt_cb TIMR1\n");
#endif
cpunum_set_input_line(0, 0, HOLD_LINE);
}
/**************************************************************
*
* PIA interface
*
**************************************************************/
static READ8_HANDLER(atari_pia_pa_r)
{
return atari_input_disabled() ? 0xFF : readinputportbytag_safe("djoy_0_1", 0);
}
static READ8_HANDLER(atari_pia_pb_r)
{
return atari_input_disabled() ? 0xFF : readinputportbytag_safe("djoy_2_3", 0);
}
static WRITE8_HANDLER(a600xl_pia_pb_w) { a600xl_mmu(data); }
static WRITE8_HANDLER(a800xl_pia_pb_w) { a800xl_mmu(data); }
#ifdef MESS
extern WRITE8_HANDLER(atari_pia_cb2_w);
#else
#define atari_pia_cb2_w (0)
#endif
static const pia6821_interface atari_pia_interface =
{
/*inputs : A/B,CA/B1,CA/B2 */ atari_pia_pa_r, atari_pia_pb_r, 0, 0, 0, 0,
/*outputs: A/B,CA/B2 */ 0, 0, 0, atari_pia_cb2_w,
/*irqs : A/B */ 0, 0
};
static const pia6821_interface a600xl_pia_interface =
{
/*inputs : A/B,CA/B1,CA/B2 */ atari_pia_pa_r, atari_pia_pb_r, 0, 0, 0, 0,
/*outputs: A/B,CA/B2 */ 0, a600xl_pia_pb_w, 0, atari_pia_cb2_w,
/*irqs : A/B */ 0, 0
};
static const pia6821_interface a800xl_pia_interface =
{
/*inputs : A/B,CA/B1,CA/B2 */ atari_pia_pa_r, atari_pia_pb_r, 0, 0, 0, 0,
/*outputs: A/B,CA/B2 */ 0, a800xl_pia_pb_w, 0, atari_pia_cb2_w,
/*irqs : A/B */ 0, 0
};
/**************************************************************
*
* Reset hardware
*
**************************************************************/
void a600xl_mmu(UINT8 new_mmu)
{
read8_handler rbank2;
write8_handler wbank2;
/* check if self-test ROM changed */
if ( new_mmu & 0x80 )
{
logerror("%s MMU SELFTEST RAM\n", Machine->gamedrv->name);
rbank2 = MRA8_NOP;
wbank2 = MWA8_NOP;
}
else
{
logerror("%s MMU SELFTEST ROM\n", Machine->gamedrv->name);
rbank2 = MRA8_BANK2;
wbank2 = MWA8_ROM;
}
memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0x5000, 0x57ff, 0, 0, rbank2);
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0x5000, 0x57ff, 0, 0, wbank2);
if (rbank2 == MRA8_BANK2)
memory_set_bankptr(2, memory_region(REGION_CPU1)+0x5000);
}
void a800xl_mmu(UINT8 new_mmu)
{
read8_handler rbank1, rbank2, rbank3, rbank4;
write8_handler wbank1, wbank2, wbank3, wbank4;
UINT8 *base1, *base2, *base3, *base4;
/* check if memory C000-FFFF changed */
if( new_mmu & 0x01 )
{
logerror("%s MMU BIOS ROM\n", Machine->gamedrv->name);
rbank3 = MRA8_BANK3;
wbank3 = MWA8_ROM;
base3 = memory_region(REGION_CPU1)+0x14000; /* 8K lo BIOS */
rbank4 = MRA8_BANK4;
wbank4 = MWA8_ROM;
base4 = memory_region(REGION_CPU1)+0x15800; /* 4K FP ROM + 8K hi BIOS */
}
else
{
logerror("%s MMU BIOS RAM\n", Machine->gamedrv->name);
rbank3 = MRA8_BANK3;
wbank3 = MWA8_BANK3;
base3 = memory_region(REGION_CPU1)+0x0c000; /* 8K RAM */
rbank4 = MRA8_BANK4;
wbank4 = MWA8_BANK4;
base4 = memory_region(REGION_CPU1)+0x0d800; /* 4K RAM + 8K RAM */
}
memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0xc000, 0xcfff, 0, 0, rbank3);
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xc000, 0xcfff, 0, 0, wbank3);
memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0xd800, 0xffff, 0, 0, rbank4);
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xd800, 0xffff, 0, 0, wbank4);
memory_set_bankptr(3, base3);
memory_set_bankptr(4, base4);
/* check if BASIC changed */
if( new_mmu & 0x02 )
{
logerror("%s MMU BASIC RAM\n", Machine->gamedrv->name);
rbank1 = MRA8_BANK1;
wbank1 = MWA8_BANK1;
base1 = memory_region(REGION_CPU1)+0x0a000; /* 8K RAM */
}
else
{
logerror("%s MMU BASIC ROM\n", Machine->gamedrv->name);
rbank1 = MRA8_BANK1;
wbank1 = MWA8_ROM;
base1 = memory_region(REGION_CPU1)+0x10000; /* 8K BASIC */
}
memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0xa000, 0xbfff, 0, 0, rbank1);
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0xa000, 0xbfff, 0, 0, wbank1);
memory_set_bankptr(1, base1);
/* check if self-test ROM changed */
if( new_mmu & 0x80 )
{
logerror("%s MMU SELFTEST RAM\n", Machine->gamedrv->name);
rbank2 = MRA8_BANK2;
wbank2 = MWA8_BANK2;
base2 = memory_region(REGION_CPU1)+0x05000; /* 0x0800 bytes */
}
else
{
logerror("%s MMU SELFTEST ROM\n", Machine->gamedrv->name);
rbank2 = MRA8_BANK2;
wbank2 = MWA8_ROM;
base2 = memory_region(REGION_CPU1)+0x15000; /* 0x0800 bytes */
}
memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0x5000, 0x57ff, 0, 0, rbank2);
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0x5000, 0x57ff, 0, 0, wbank2);
memory_set_bankptr(2, base2);
}
/**************************************************************
*
* Keyboard
*
**************************************************************/
#define AKEY_L 0x00
#define AKEY_J 0x01
#define AKEY_SEMICOLON 0x02
#define AKEY_BREAK 0x03 /* this not really a scancode */
#define AKEY_K 0x05
#define AKEY_PLUS 0x06
#define AKEY_ASTERISK 0x07
#define AKEY_O 0x08
#define AKEY_NONE 0x09
#define AKEY_P 0x0a
#define AKEY_U 0x0b
#define AKEY_ENTER 0x0c
#define AKEY_I 0x0d
#define AKEY_MINUS 0x0e
#define AKEY_EQUALS 0x0f
#define AKEY_V 0x10
#define AKEY_C 0x12
#define AKEY_B 0x15
#define AKEY_X 0x16
#define AKEY_Z 0x17
#define AKEY_4 0x18
#define AKEY_3 0x1a
#define AKEY_6 0x1b
#define AKEY_ESC 0x1c
#define AKEY_5 0x1d
#define AKEY_2 0x1e
#define AKEY_1 0x1f
#define AKEY_COMMA 0x20
#define AKEY_SPACE 0x21
#define AKEY_STOP 0x22
#define AKEY_N 0x23
#define AKEY_M 0x25
#define AKEY_SLASH 0x26
#define AKEY_ATARI 0x27
#define AKEY_R 0x28
#define AKEY_E 0x2a
#define AKEY_Y 0x2b
#define AKEY_TAB 0x2c
#define AKEY_T 0x2d
#define AKEY_W 0x2e
#define AKEY_Q 0x2f
#define AKEY_9 0x30
#define AKEY_0 0x32
#define AKEY_7 0x33
#define AKEY_BSP 0x34
#define AKEY_8 0x35
#define AKEY_LESSER 0x36
#define AKEY_GREATER 0x37
#define AKEY_F 0x38
#define AKEY_H 0x39
#define AKEY_D 0x3a
#define AKEY_CAPS 0x3c
#define AKEY_G 0x3d
#define AKEY_S 0x3e
#define AKEY_A 0x3f
#define ASHF_L 0x40
#define ASHF_J 0x41
#define ASHF_COLON 0x42
#define ASHF_BREAK 0x43 /* this not really a scancode */
#define ASHF_K 0x45
#define ASHF_BACKSLASH 0x46
#define ASHF_TILDE 0x47
#define ASHF_O 0x48
#define ASHF_SHIFT 0x49
#define ASHF_P 0x4a
#define ASHF_U 0x4b
#define ASHF_ENTER 0x4c
#define ASHF_I 0x4d
#define ASHF_UNDERSCORE 0x4e
#define ASHF_BAR 0x4f
#define ASHF_V 0x50
#define ASHF_C 0x52
#define ASHF_B 0x55
#define ASHF_X 0x56
#define ASHF_Z 0x57
#define ASHF_DOLLAR 0x58
#define ASHF_HASH 0x5a
#define ASHF_AMPERSAND 0x5b
#define ASHF_ESC 0x5c
#define ASHF_PERCENT 0x5d
#define ASHF_DQUOTE 0x5e
#define ASHF_EXCLAM 0x5f
#define ASHF_LBRACE 0x60
#define ASHF_SPACE 0x61
#define ASHF_RBRACE 0x62
#define ASHF_N 0x63
#define ASHF_M 0x65
#define ASHF_QUESTION 0x66
#define ASHF_ATARI 0x67
#define ASHF_R 0x68
#define ASHF_E 0x6a
#define ASHF_Y 0x6b
#define ASHF_TAB 0x6c
#define ASHF_T 0x6d
#define ASHF_W 0x6e
#define ASHF_Q 0x6f
#define ASHF_LPAREN 0x70
#define ASHF_RPAREN 0x72
#define ASHF_QUOTE 0x73
#define ASHF_BSP 0x74
#define ASHF_AT 0x75
#define ASHF_CLEAR 0x76
#define ASHF_INSERT 0x77
#define ASHF_F 0x78
#define ASHF_H 0x79
#define ASHF_D 0x7a
#define ASHF_CAPS 0x7c
#define ASHF_G 0x7d
#define ASHF_S 0x7e
#define ASHF_A 0x7f
#define ACTL_L 0x80
#define ACTL_J 0x81
#define ACTL_SEMICOLON 0x82
#define ACTL_BREAK 0x83 /* this not really a scancode */
#define ACTL_K 0x85
#define ACTL_PLUS 0x86
#define ACTL_ASTERISK 0x87
#define ACTL_O 0x88
#define ACTL_CONTROL 0x89
#define ACTL_P 0x8a
#define ACTL_U 0x8b
#define ACTL_ENTER 0x8c
#define ACTL_I 0x8d
#define ACTL_MINUS 0x8e
#define ACTL_EQUALS 0x8f
#define ACTL_V 0x90
#define ACTL_C 0x92
#define ACTL_B 0x95
#define ACTL_X 0x96
#define ACTL_Z 0x97
#define ACTL_4 0x98
#define ACTL_3 0x9a
#define ACTL_6 0x9b
#define ACTL_ESC 0x9c
#define ACTL_5 0x9d
#define ACTL_2 0x9e
#define ACTL_1 0x9f
#define ACTL_COMMA 0xa0
#define ACTL_SPACE 0xa1
#define ACTL_STOP 0xa2
#define ACTL_N 0xa3
#define ACTL_M 0xa5
#define ACTL_SLASH 0xa6
#define ACTL_ATARI 0xa7
#define ACTL_R 0xa8
#define ACTL_E 0xaa
#define ACTL_Y 0xab
#define ACTL_TAB 0xac
#define ACTL_T 0xad
#define ACTL_W 0xae
#define ACTL_Q 0xaf
#define ACTL_9 0xb0
#define ACTL_0 0xb2
#define ACTL_7 0xb3
#define ACTL_BSP 0xb4
#define ACTL_8 0xb5
#define ACTL_LESSER 0xb6
#define ACTL_GREATER 0xb7
#define ACTL_F 0xb8
#define ACTL_H 0xb9
#define ACTL_D 0xba
#define ACTL_CAPS 0xbc
#define ACTL_G 0xbd
#define ACTL_S 0xbe
#define ACTL_A 0xbf
#define ACSH_L 0xc0
#define ACSH_J 0xc1
#define ACSH_COLON 0xc2
#define ACSH_BREAK 0xc3 /* this not really a scancode */
#define ACSH_K 0xc5
#define ACSH_BACKSLASH 0xc6
#define ACSH_TILDE 0xc7
#define ACSH_O 0xc8
#define ACSH_CTRLSHIFT 0xc9
#define ACSH_P 0xca
#define ACSH_U 0xcb
#define ACSH_ENTER 0xcc
#define ACSH_I 0xcd
#define ACSH_UNDERSCORE 0xce
#define ACSH_BAR 0xcf
#define ACSH_V 0xd0
#define ACSH_C 0xd2
#define ACSH_B 0xd5
#define ACSH_X 0xd6
#define ACSH_Z 0xd7
#define ACSH_DOLLAR 0xd8
#define ACSH_HASH 0xda
#define ACSH_AMPERSAND 0xdb
#define ACSH_ESC 0xdc
#define ACSH_PERCENT 0xdd
#define ACSH_DQUOTE 0xde
#define ACSH_EXCLAM 0xdf
#define ACSH_LBRACE 0xe0
#define ACSH_SPACE 0xe1
#define ACSH_RBRACE 0xe2
#define ACSH_N 0xe3
#define ACSH_M 0xe5
#define ACSH_QUESTION 0xe6
#define ACSH_ATARI 0xe7
#define ACSH_R 0xe8
#define ACSH_E 0xea
#define ACSH_Y 0xeb
#define ACSH_TAB 0xec
#define ACSH_T 0xed
#define ACSH_W 0xee
#define ACSH_Q 0xef
#define ACSH_LPAREN 0xf0
#define ACSH_RPAREN 0xf2
#define ACSH_QUOTE 0xf3
#define ACSH_BSP 0xf4
#define ACSH_AT 0xf5
#define ACSH_CLEAR 0xf6
#define ACSH_INSERT 0xf7
#define ACSH_F 0xf8
#define ACSH_H 0xf9
#define ACSH_D 0xfa
#define ACSH_CAPS 0xfc
#define ACSH_G 0xfd
#define ACSH_S 0xfe
#define ACSH_A 0xff
static const UINT8 keys[64][4] = {
{AKEY_NONE ,AKEY_NONE ,AKEY_NONE ,AKEY_NONE }, /* "" CODE_NONE */
{AKEY_ESC ,ASHF_ESC ,ACTL_ESC ,ACSH_ESC }, /*"Escape" KEYCODE_ESC */
{AKEY_1 ,ASHF_EXCLAM ,ACTL_1 ,ACSH_EXCLAM }, /* "1 !" KEYCODE_1 */
{AKEY_2 ,ASHF_DQUOTE ,ACTL_2 ,ACSH_DQUOTE }, /* "2 \"" KEYCODE_2 */
{AKEY_3 ,ASHF_HASH ,ACTL_3 ,ACSH_HASH }, /* "3 #" KEYCODE_3 */
{AKEY_4 ,ASHF_DOLLAR ,ACTL_4 ,ACSH_DOLLAR }, /* "4 $" KEYCODE_4 */
{AKEY_5 ,ASHF_PERCENT ,ACTL_5 ,ACSH_PERCENT }, /* "5 %" KEYCODE_5 */
{AKEY_6 ,ASHF_TILDE ,ACTL_6 ,ACSH_AMPERSAND }, /* "6 ^" KEYCODE_6 */
{AKEY_7 ,ASHF_AMPERSAND ,ACTL_7 ,ACSH_N }, /* "7 &" KEYCODE_7 */
{AKEY_8 ,AKEY_ASTERISK ,ACTL_8 ,ACSH_M }, /* "8 *" KEYCODE_8 */
{AKEY_9 ,ASHF_LPAREN ,ACTL_9 ,ACSH_LBRACE }, /* "9 (" KEYCODE_9 */
{AKEY_0 ,ASHF_RPAREN ,ACTL_0 ,ACSH_RBRACE }, /* "0 )" KEYCODE_0 */
{AKEY_MINUS ,ASHF_UNDERSCORE ,ACTL_MINUS ,ACSH_UNDERSCORE }, /* "- _" KEYCODE_MINUS */
{AKEY_EQUALS ,AKEY_PLUS ,ACTL_EQUALS ,ACTL_PLUS }, /* "= +" KEYCODE_EQUALS */
{AKEY_BSP ,ASHF_BSP ,ACTL_BSP ,ACSH_BSP }, /* "Backsp" KEYCODE_BACKSPACE */
{AKEY_TAB ,ASHF_TAB ,ACTL_TAB ,ACSH_TAB }, /* "Tab" KEYCODE_TAB */
{AKEY_Q ,ASHF_Q ,ACTL_Q ,ACSH_Q }, /* "q Q" KEYCODE_Q */
{AKEY_W ,ASHF_W ,ACTL_W ,ACSH_W }, /* "w W" KEYCODE_W */
{AKEY_E ,ASHF_E ,ACTL_E ,ACSH_E }, /* "e E" KEYCODE_E */
{AKEY_R ,ASHF_R ,ACTL_R ,ACSH_R }, /* "r R" KEYCODE_R */
{AKEY_T ,ASHF_T ,ACTL_T ,ACSH_T }, /* "t T" KEYCODE_T */
{AKEY_Y ,ASHF_Y ,ACTL_Y ,ACSH_Y }, /* "y Y" KEYCODE_Y */
{AKEY_U ,ASHF_U ,ACTL_U ,ACTL_U }, /* "u U" KEYCODE_U */
{AKEY_I ,ASHF_I ,ACTL_I ,ACTL_I }, /* "i I" KEYCODE_I */
{AKEY_O ,ASHF_O ,ACTL_O ,ACTL_O }, /* "o O" KEYCODE_O */
{AKEY_P ,ASHF_P ,ACTL_P ,ACTL_P }, /* "p P" KEYCODE_P */
{ASHF_LBRACE ,ACTL_COMMA ,ACTL_COMMA ,ACSH_LBRACE }, /* "[ {" KEYCODE_LBRACE */
{ASHF_RBRACE ,ACTL_STOP ,ACTL_STOP ,ACSH_RBRACE }, /* "] }" KEYCODE_RBRACE */
{AKEY_ENTER ,ASHF_ENTER ,ACTL_ENTER ,ACSH_ENTER }, /* "Enter" KEYCODE_ENTER */
{AKEY_A ,ASHF_A ,ACTL_A ,ACSH_A }, /* "a A" KEYCODE_A */
{AKEY_S ,ASHF_S ,ACTL_S ,ACSH_S }, /* "s S" KEYCODE_S */
{AKEY_D ,ASHF_D ,ACTL_D ,ACSH_D }, /* "d D" KEYCODE_D */
{AKEY_F ,ASHF_F ,ACTL_F ,ACSH_F }, /* "f F" KEYCODE_F */
{AKEY_G ,ASHF_G ,ACTL_G ,ACSH_G }, /* "g G" KEYCODE_G */
{AKEY_H ,ASHF_H ,ACTL_H ,ACSH_H }, /* "h H" KEYCODE_H */
{AKEY_J ,ASHF_J ,ACTL_J ,ACSH_J }, /* "j J" KEYCODE_J */
{AKEY_K ,ASHF_K ,ACTL_K ,ACSH_K }, /* "k K" KEYCODE_K */
{AKEY_L ,ASHF_L ,ACTL_L ,ACSH_L }, /* "l L" KEYCODE_L */
{AKEY_SEMICOLON ,ASHF_COLON ,ACTL_SEMICOLON ,ACSH_COLON }, /* "; :" KEYCODE_COLON */
{ASHF_QUOTE ,ACSH_QUOTE ,ASHF_DQUOTE ,ACSH_DQUOTE }, /* "+ \\" KEYCODE_QUOTE */
{ASHF_QUOTE ,ACSH_QUOTE ,ACTL_ASTERISK ,ACSH_TILDE }, /* "* ^" KEYCODE_TILDE */
{ASHF_BACKSLASH ,ASHF_BAR ,ACSH_BACKSLASH ,ACSH_BAR }, /* "\ |" KEYCODE_BACKSLASH */
{AKEY_Z ,ASHF_Z ,ACTL_Z ,ACSH_Z }, /* "z Z" KEYCODE_Z */
{AKEY_X ,ASHF_X ,ACTL_X ,ACTL_X }, /* "x X" KEYCODE_X */
{AKEY_C ,ASHF_C ,ACTL_C ,ACTL_C }, /* "c C" KEYCODE_C */
{AKEY_V ,ASHF_V ,ACTL_V ,ACTL_V }, /* "v V" KEYCODE_V */
{AKEY_B ,ASHF_B ,ACTL_B ,ACTL_B }, /* "b B" KEYCODE_B */
{AKEY_N ,ASHF_N ,ACTL_N ,ACTL_N }, /* "n N" KEYCODE_N */
{AKEY_M ,ASHF_M ,ACTL_M ,ACTL_M }, /* "m M" KEYCODE_M */
{AKEY_COMMA ,AKEY_LESSER ,ACTL_COMMA ,ACTL_LESSER }, /* ", [" KEYCODE_COMMA */
{AKEY_STOP ,AKEY_GREATER ,ACTL_STOP ,ACTL_GREATER }, /* ". ]" KEYCODE_STOP */
{AKEY_SLASH ,ASHF_QUESTION ,ACTL_SLASH ,ACSH_QUESTION }, /* "/ ?" KEYCODE_SLASH */
{ASHF_BACKSLASH ,ASHF_BAR ,ACSH_BACKSLASH ,ACSH_BAR }, /* "\ |" KEYCODE_BACKSLASH2 */
{AKEY_ATARI ,ASHF_ATARI ,ACTL_ATARI ,ACSH_ATARI }, /* "Atari" KEYCODE_LALT */
{AKEY_SPACE ,ASHF_SPACE ,ACTL_SPACE ,ACSH_SPACE }, /* "Space" KEYCODE_SPACE */
{AKEY_CAPS ,ASHF_CAPS ,ACTL_CAPS ,ACSH_CAPS }, /* "Caps" KEYCODE_CAPSLOCK */
{ASHF_CLEAR ,ASHF_CLEAR ,ACSH_CLEAR ,ACSH_CLEAR }, /* "Clear" KEYCODE_HOME */
{ASHF_INSERT ,ASHF_INSERT ,ASHF_INSERT ,ASHF_INSERT }, /* "Insert" KEYCODE_INSERT */
{AKEY_BSP ,AKEY_BSP ,AKEY_BSP ,AKEY_BSP }, /* "Delete" KEYCODE_DEL */
{AKEY_BREAK ,ASHF_BREAK ,ACTL_BREAK ,ACSH_BREAK }, /* "Break" KEYCODE_PGUP */
{ACTL_PLUS ,ACTL_PLUS ,ACTL_PLUS ,ACTL_PLUS }, /* "(Left)" KEYCODE_LEFT */
{ACTL_ASTERISK ,ACTL_ASTERISK ,ACTL_ASTERISK ,ACTL_ASTERISK }, /* "(Right)"KEYCODE_RIGHT */
{ACTL_MINUS ,ACTL_MINUS ,ACTL_MINUS ,ACTL_MINUS }, /* "(Up)" KEYCODE_UP */
{ACTL_EQUALS ,ACTL_EQUALS ,ACTL_EQUALS ,ACTL_EQUALS } /* "(Down)" KEYCODE_DOWN */
};
void a800_handle_keyboard(void)
{
static int atari_last = 0xff;
int i, modifiers, atari_code;
char tag[64];
modifiers = 0;
/* with shift ? */
if( input_code_pressed(KEYCODE_LSHIFT) || input_code_pressed(KEYCODE_RSHIFT) )
modifiers |= 1;
/* with control ? */
if( input_code_pressed(KEYCODE_LCONTROL) || input_code_pressed(KEYCODE_RCONTROL) )
modifiers |= 2;
for( i = 0; i < 64; i++ )
{
sprintf(tag, "keyboard_%d", i / 16);
if( readinputportbytag_safe(tag, 0) & (1 << (i&15)) )
{
atari_code = keys[i][modifiers];
if( atari_code != AKEY_NONE )
{
if( atari_code == atari_last )
return;
atari_last = atari_code;
if( (atari_code & 0x3f) == AKEY_BREAK )
{
pokey1_break_w(atari_code & 0x40);
return;
}
pokey1_kbcode_w(atari_code, 1);
return;
}
}
}
/* remove key pressed status bit from skstat */
pokey1_kbcode_w(AKEY_NONE, 0);
atari_last = AKEY_NONE;
}
#define VKEY_BREAK 0x10
/* absolutely no clue what to do here :((( */
void a5200_handle_keypads(void)
{
int i, modifiers;
static int atari_last = 0xff;
modifiers = 0;
/* with shift ? */
if (input_code_pressed(KEYCODE_LSHIFT) || input_code_pressed(KEYCODE_RSHIFT))
modifiers |= 1;
/* with control ? */
if (input_code_pressed(KEYCODE_LCONTROL) || input_code_pressed(KEYCODE_RCONTROL))
modifiers |= 2;
/* check keypad */
for (i = 0; i < 16; i++)
{
if( readinputportbytag("keypad") & (1 << i) )
{
if( i == atari_last )
return;
atari_last = i;
if( i == 0 )
{
pokey1_break_w(i & 0x40);
return;
}
pokey1_kbcode_w((i << 1) | 0x21, 1);
return;
}
}
/* check top button */
if ((readinputportbytag("djoy_b") & 0x10) == 0)
{
if (atari_last == 0xFE)
return;
pokey1_kbcode_w(0x61, 1);
//pokey1_break_w(0x40);
atari_last = 0xFE;
return;
}
else if (atari_last == 0xFE)
pokey1_kbcode_w(0x21, 1);
/* remove key pressed status bit from skstat */
pokey1_kbcode_w(0xFF, 0);
atari_last = 0xff;
}
#ifdef MESS
DRIVER_INIT( atari )
{
offs_t ram_top;
offs_t ram_size;
if (!strcmp(machine->gamedrv->name, "a400")
|| !strcmp(machine->gamedrv->name, "a400pal")
|| !strcmp(machine->gamedrv->name, "a800")
|| !strcmp(machine->gamedrv->name, "a800pal")
|| !strcmp(machine->gamedrv->name, "a800xl"))
{
ram_size = 0xA000;
}
else
{
ram_size = 0x8000;
}
/* install RAM */
ram_top = MIN(mess_ram_size, ram_size) - 1;
memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM,
0x0000, ram_top, 0, 0, MRA8_BANK2);
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM,
0x0000, ram_top, 0, 0, MWA8_BANK2);
memory_set_bankptr(2, mess_ram);
}
#endif
/*************************************
*
* Generic Atari Code
*
*************************************/
#ifdef MESS
static void a800_setbank(int n)
{
void *read_addr;
void *write_addr;
UINT8 *mem = memory_region(REGION_CPU1);
switch (n)
{
case 1:
read_addr = &mem[0x10000];
write_addr = NULL;
break;
default:
if( atari <= ATARI_400 )
{
/* Atari 400 has no RAM here, so install the NOP handler */
read_addr = NULL;
write_addr = NULL;
}
else
{
read_addr = &mess_ram[0x08000];
write_addr = &mess_ram[0x08000];
}
break;
}
memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM, 0x8000, 0xbfff, 0, 0,
read_addr ? MRA8_BANK1 : MRA8_NOP);
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM, 0x8000, 0xbfff, 0, 0,
write_addr ? MWA8_BANK1 : MWA8_NOP);
if (read_addr)
memory_set_bankptr(1, read_addr);
if (write_addr)
memory_set_bankptr(1, write_addr);
}
#endif
static void pokey_reset(running_machine *machine)
{
pokey1_w(15,0);
}
static void cart_reset(running_machine *machine)
{
#ifdef MESS
if (a800_cart_loaded)
a800_setbank(1);
#endif /* MESS */
}
static UINT8 console_read(void)
{
return readinputportbytag("console");
}
static void console_write(UINT8 data)
{
if (data & 0x08)
DAC_data_w(0, -120);
else
DAC_data_w(0, +120);
}
static void _pia_reset(running_machine *machine)
{
pia_reset();
}
static void _antic_reset(running_machine *machine)
{
antic_reset();
}
static void atari_machine_start(int type, const pia6821_interface *pia_intf, int has_cart)
{
gtia_interface gtia_intf;
atari = type;
/* GTIA */
memset(>ia_intf, 0, sizeof(gtia_intf));
if (port_tag_to_index("console") >= 0)
gtia_intf.console_read = console_read;
if (sndti_exists(SOUND_DAC, 0))
gtia_intf.console_write = console_write;
gtia_init(>ia_intf);
/* pokey */
add_reset_callback(Machine, pokey_reset);
/* PIA */
if (pia_intf)
{
pia_config(0, pia_intf);
add_reset_callback(Machine, _pia_reset);
}
/* ANTIC */
add_reset_callback(Machine, _antic_reset);
/* cartridge */
if (has_cart)
add_reset_callback(Machine, cart_reset);
#ifdef MESS
{
offs_t ram_top;
offs_t ram_size;
if (!strcmp(Machine->gamedrv->name, "a400")
|| !strcmp(Machine->gamedrv->name, "a400pal")
|| !strcmp(Machine->gamedrv->name, "a800")
|| !strcmp(Machine->gamedrv->name, "a800pal")
|| !strcmp(Machine->gamedrv->name, "a800xl"))
{
ram_size = 0xA000;
}
else
{
ram_size = 0x8000;
}
/* install RAM */
ram_top = MIN(mess_ram_size, ram_size) - 1;
memory_install_read8_handler(0, ADDRESS_SPACE_PROGRAM,
0x0000, ram_top, 0, 0, MRA8_BANK2);
memory_install_write8_handler(0, ADDRESS_SPACE_PROGRAM,
0x0000, ram_top, 0, 0, MWA8_BANK2);
memory_set_bankptr(2, mess_ram);
}
#endif /* MESS */
/* save states */
state_save_register_global_pointer(((UINT8 *) &antic.r), sizeof(antic.r));
state_save_register_global_pointer(((UINT8 *) &antic.w), sizeof(antic.w));
}
/*************************************
*
* Atari 400
* Atari 600XL
*
*************************************/
MACHINE_START( a400 )
{
atari_machine_start(ATARI_400, &atari_pia_interface, TRUE);
}
MACHINE_START( a600xl )
{
atari_machine_start(ATARI_600XL, &a600xl_pia_interface, TRUE);
}
/*************************************
*
* Atari 800
*
*************************************/
MACHINE_START( a800 )
{
atari_machine_start(ATARI_800, &atari_pia_interface, TRUE);
}
#ifdef MESS
DEVICE_LOAD( a800_cart )
{
UINT8 *mem = memory_region(REGION_CPU1);
int size;
/* load an optional (dual) cartridge (e.g. basic.rom) */
if( image_index_in_device(image) > 0 )
{
size = image_fread(image, &mem[0x12000], 0x2000);
a800_cart_is_16k = (size == 0x2000);
logerror("%s loaded right cartridge '%s' size 16K\n", Machine->gamedrv->name, image_filename(image) );
}
else
{
size = image_fread(image, &mem[0x10000], 0x2000);
a800_cart_loaded = size > 0x0000;
size = image_fread(image, &mem[0x12000], 0x2000);
a800_cart_is_16k = size > 0x2000;
logerror("%s loaded left cartridge '%s' size %s\n", Machine->gamedrv->name, image_filename(image) , (a800_cart_is_16k) ? "16K":"8K");
}
return INIT_PASS;
}
DEVICE_UNLOAD( a800_cart )
{
if( image_index_in_device(image) > 0 )
{
a800_cart_is_16k = 0;
a800_setbank(1);
}
else
{
a800_cart_loaded = 0;
a800_setbank(0);
}
}
#endif
/*************************************
*
* Atari 800XL
*
*************************************/
MACHINE_START( a800xl )
{
atari_machine_start(ATARI_800XL, &a800xl_pia_interface, TRUE);
}
#ifdef MESS
DEVICE_LOAD( a800xl_cart )
{
UINT8 *mem = memory_region(REGION_CPU1);
astring *fname;
mame_file *basic_fp;
file_error filerr;
unsigned size;
fname = astring_assemble_3(astring_alloc(), Machine->gamedrv->name, PATH_SEPARATOR, "basic.rom");
filerr = mame_fopen(SEARCHPATH_ROM, astring_c(fname), OPEN_FLAG_READ, &basic_fp);
astring_free(fname);
if (filerr != FILERR_NONE)
{
size = mame_fread(basic_fp, &mem[0x14000], 0x2000);
if( size < 0x2000 )
{
logerror("%s image '%s' load failed (less than 8K)\n", Machine->gamedrv->name, astring_c(fname));
mame_fclose(basic_fp);
return 2;
}
}
/* load an optional (dual) cartidge (e.g. basic.rom) */
if (filerr != FILERR_NONE)
{
{
size = image_fread(image, &mem[0x14000], 0x2000);
a800_cart_loaded = size / 0x2000;
size = image_fread(image, &mem[0x16000], 0x2000);
a800_cart_is_16k = size / 0x2000;
logerror("%s loaded cartridge '%s' size %s\n",
Machine->gamedrv->name, image_filename(image), (a800_cart_is_16k) ? "16K":"8K");
}
mame_fclose(basic_fp);
}
return INIT_PASS;
}
#endif
/*************************************
*
* Atari 5200 console
*
*************************************/
MACHINE_START( a5200 )
{
atari_machine_start(ATARI_800XL, NULL, FALSE);
}
#ifdef MESS
DEVICE_LOAD( a5200_cart )
{
UINT8 *mem = memory_region(REGION_CPU1);
int size;
/* load an optional (dual) cartidge */
size = image_fread(image, &mem[0x4000], 0x8000);
if (size<0x8000) memmove(mem+0x4000+0x8000-size, mem+0x4000, size);
// mirroring of smaller cartridges
if (size <= 0x1000) memcpy(mem+0xa000, mem+0xb000, 0x1000);
if (size <= 0x2000) memcpy(mem+0x8000, mem+0xa000, 0x2000);
if (size <= 0x4000)
{
const char *info;
memcpy(&mem[0x4000], &mem[0x8000], 0x4000);
info = image_extrainfo(image);
if (info!=NULL && strcmp(info, "A13MIRRORING")==0)
{
memcpy(&mem[0x8000], &mem[0xa000], 0x2000);
memcpy(&mem[0x6000], &mem[0x4000], 0x2000);
}
}
logerror("%s loaded cartridge '%s' size %dK\n",
Machine->gamedrv->name, image_filename(image) , size/1024);
return INIT_PASS;
}
DEVICE_UNLOAD( a5200_cart )
{
UINT8 *mem = memory_region(REGION_CPU1);
/* zap the cartridge memory (again) */
memset(&mem[0x4000], 0x00, 0x8000);
}
#endif
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