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apple2ix
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apple2ix/src/vm.c

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/*
* Apple // emulator for *ix
*
* This software package is subject to the GNU General Public License
* version 3 or later (your choice) as published by the Free Software
* Foundation.
*
* Copyright 2013-2015 Aaron Culliney
*
*/
#include "common.h"
extern const uint8_t apple_iie_rom[32768]; // rom.c
uint8_t apple_ii_64k[2][65536] = { { 0 } };
uint8_t language_card[2][8192] = { { 0 } };
uint8_t language_banks[2][8192] = { { 0 } };
const uint8_t *base_vmem = apple_ii_64k[0];
#if VM_TRACING
FILE *test_vm_fp = NULL;
typedef struct vm_trace_range_t {
uint16_t lo;
uint16_t hi;
} vm_trace_range_t;
#endif
// ----------------------------------------------------------------------------
GLUE_BANK_READ(iie_read_ram_default, BASE_RAMRD);
GLUE_BANK_WRITE(iie_write_ram_default, BASE_RAMWRT);
GLUE_BANK_READ(read_ram_bank, BASE_D000_RD);
GLUE_BANK_MAYBEWRITE(write_ram_bank, BASE_D000_WRT);
GLUE_BANK_READ(read_ram_lc, BASE_E000_RD);
GLUE_BANK_MAYBEWRITE(write_ram_lc, BASE_E000_WRT);
GLUE_BANK_READ(iie_read_ram_text_page0, BASE_TEXTRD);
GLUE_BANK_READ(iie_read_ram_hires_page0, BASE_HGRRD);
GLUE_BANK_READ(iie_read_ram_zpage_and_stack, BASE_STACKZP);
GLUE_BANK_WRITE(iie_write_ram_zpage_and_stack, BASE_STACKZP);
GLUE_BANK_MAYBE_READ_C3(iie_read_slot3, BASE_C3ROM);
GLUE_BANK_MAYBE_READ_CX(iie_read_slot4, BASE_C4ROM);
GLUE_BANK_MAYBE_READ_CX(iie_read_slot5, BASE_C5ROM);
GLUE_BANK_MAYBE_READ_CX(iie_read_slotx, BASE_CXROM);
GLUE_NOP(write_ram_nop);
GLUE_C_READ(iie_read_peripheral_card)
{
assert(((ea >> 12) & 0xf) == 0xC && "should only be called for 0xC100-0xC7FF");
uint8_t slot = ((ea >> 8) & 0xf);
// TODO FIXME : route to correct peripheral card
switch (slot) {
case 0x1:
case 0x2:
case 0x3:
case 0x7:
break;
case 0x4:
case 0x5:
return mb_read(ea); // FIXME : hardcoded Mockingboards ...
break;
case 0x6:
return apple_ii_64k[0][ea];
break;
default:
assert(false && "internal configuration error!");
break;
}
// no card in slot
return floating_bus();
}
static uint8_t read_keyboard_strobe(void) {
apple_ii_64k[0][0xC000] &= 0x7F;
apple_ii_64k[1][0xC000] &= 0x7F;
return apple_ii_64k[0][0xC000];
}
// ----------------------------------------------------------------------------
// graphics softswitches
static uint8_t iie_page2_off(void) {
if (!(run_args.softswitches & SS_PAGE2)) {
return floating_bus();
}
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches &= ~(SS_PAGE2|SS_SCREEN);
if (run_args.softswitches & SS_80STORE) {
run_args.softswitches &= ~(SS_TEXTRD|SS_TEXTWRT);
run_args.base_textrd = apple_ii_64k[0];
run_args.base_textwrt = apple_ii_64k[0];
if (run_args.softswitches & SS_HIRES) {
run_args.softswitches &= ~(SS_HGRRD|SS_HGRWRT);
run_args.base_hgrrd = apple_ii_64k[0];
run_args.base_hgrwrt = apple_ii_64k[0];
}
}
return floating_bus();
}
static uint8_t iie_page2_on(void) {
if (run_args.softswitches & SS_PAGE2) {
return floating_bus();
}
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches |= SS_PAGE2;
if (run_args.softswitches & SS_80STORE) {
run_args.softswitches |= (SS_TEXTRD|SS_TEXTWRT);
run_args.base_textrd = apple_ii_64k[1];
run_args.base_textwrt = apple_ii_64k[1];
if (run_args.softswitches & SS_HIRES) {
run_args.softswitches |= (SS_HGRRD|SS_HGRWRT);
run_args.base_hgrrd = apple_ii_64k[1];
run_args.base_hgrwrt = apple_ii_64k[1];
}
} else {
run_args.softswitches |= SS_SCREEN;
}
return floating_bus();
}
static uint8_t read_switch_graphics(void) {
if (run_args.softswitches & SS_TEXT) {
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches &= ~SS_TEXT;
}
return floating_bus();
}
static uint8_t read_switch_text(void) {
if (!(run_args.softswitches & SS_TEXT)) {
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches |= SS_TEXT;
}
return floating_bus();
}
static uint8_t read_switch_no_mixed(void) {
if (run_args.softswitches & SS_MIXED) {
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches &= ~SS_MIXED;
}
return floating_bus();
}
static uint8_t read_switch_mixed(void) {
if (!(run_args.softswitches & SS_MIXED)) {
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches |= SS_MIXED;
}
return floating_bus();
}
static uint8_t iie_annunciator(uint16_t ea)
{
if ((ea >= 0xC058) && (ea <= 0xC05B)) {
// TODO: alternate joystick management?
}
return floating_bus();
}
static uint8_t iie_hires_off(void) {
if (!(run_args.softswitches & SS_HIRES)) {
return floating_bus();
}
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches &= ~(SS_HIRES|SS_HGRRD|SS_HGRWRT);
run_args.base_hgrrd = apple_ii_64k[0];
run_args.base_hgrwrt = apple_ii_64k[0];
if (run_args.softswitches & SS_RAMRD) {
run_args.base_hgrrd = apple_ii_64k[1];
run_args.softswitches |= SS_HGRRD;
}
if (run_args.softswitches & SS_RAMWRT) {
run_args.base_hgrwrt = apple_ii_64k[1];
run_args.softswitches |= SS_HGRWRT;
}
return floating_bus();
}
static uint8_t iie_hires_on(void) {
if (run_args.softswitches & SS_HIRES) {
return floating_bus();
}
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches |= SS_HIRES;
if (run_args.softswitches & SS_80STORE) {
if (run_args.softswitches & SS_PAGE2) {
run_args.softswitches |= (SS_HGRRD|SS_HGRWRT);
run_args.base_hgrrd = apple_ii_64k[1];
run_args.base_hgrwrt = apple_ii_64k[1];
} else {
run_args.softswitches &= ~(SS_HGRRD|SS_HGRWRT);
run_args.base_hgrrd = apple_ii_64k[0];
run_args.base_hgrwrt = apple_ii_64k[0];
}
}
return floating_bus();
}
GLUE_C_WRITE(video__write_2e_text0)
{
do {
drawpage_mode_t mode = video_currentMainMode(run_args.softswitches);
if (mode == DRAWPAGE_HIRES) {
break;
}
if (!(run_args.softswitches & SS_PAGE2)) {
uint8_t b0 = run_args.base_textwrt[ea];
if (b0 != b) {
video_setDirty(A2_DIRTY_FLAG);
}
}
} while (0);
run_args.base_textwrt[ea] = b;
}
GLUE_C_WRITE(video__write_2e_text0_mixed)
{
do {
drawpage_mode_t mode = video_currentMixedMode(run_args.softswitches);
if (mode == DRAWPAGE_HIRES) {
break;
}
if (!(run_args.softswitches & SS_PAGE2)) {
uint8_t b0 = run_args.base_textwrt[ea];
if (b0 != b) {
video_setDirty(A2_DIRTY_FLAG);
}
}
} while (0);
run_args.base_textwrt[ea] = b;
}
GLUE_C_WRITE(video__write_2e_text1)
{
do {
drawpage_mode_t mode = video_currentMainMode(run_args.softswitches);
if (mode == DRAWPAGE_HIRES) {
break;
}
if ((run_args.softswitches & SS_PAGE2) && !(run_args.softswitches & SS_80STORE)) {
uint8_t b0 = run_args.base_ramwrt[ea];
if (b0 != b) {
video_setDirty(A2_DIRTY_FLAG);
}
}
} while (0);
run_args.base_ramwrt[ea] = b;
}
GLUE_C_WRITE(video__write_2e_text1_mixed)
{
do {
drawpage_mode_t mode = video_currentMixedMode(run_args.softswitches);
if (mode == DRAWPAGE_HIRES) {
break;
}
if ((run_args.softswitches & SS_PAGE2) && !(run_args.softswitches & SS_80STORE)) {
uint8_t b0 = run_args.base_ramwrt[ea];
if (b0 != b) {
video_setDirty(A2_DIRTY_FLAG);
}
}
} while (0);
run_args.base_ramwrt[ea] = b;
}
GLUE_C_WRITE(video__write_2e_hgr0)
{
do {
drawpage_mode_t mode = video_currentMainMode(run_args.softswitches);
if (mode == DRAWPAGE_TEXT) {
break;
}
if (!(run_args.softswitches & SS_PAGE2)) {
uint8_t b0 = run_args.base_hgrwrt[ea];
if (b0 != b) {
video_setDirty(A2_DIRTY_FLAG);
}
}
} while (0);
run_args.base_hgrwrt[ea] = b;
}
GLUE_C_WRITE(video__write_2e_hgr0_mixed)
{
do {
drawpage_mode_t mode = video_currentMixedMode(run_args.softswitches);
if (mode == DRAWPAGE_TEXT) {
break;
}
if (!(run_args.softswitches & SS_PAGE2)) {
uint8_t b0 = run_args.base_hgrwrt[ea];
if (b0 != b) {
video_setDirty(A2_DIRTY_FLAG);
}
}
} while (0);
run_args.base_hgrwrt[ea] = b;
}
GLUE_C_WRITE(video__write_2e_hgr1)
{
do {
drawpage_mode_t mode = video_currentMainMode(run_args.softswitches);
if (mode == DRAWPAGE_TEXT) {
break;
}
if ((run_args.softswitches & SS_PAGE2) && !(run_args.softswitches & SS_80STORE)) {
uint8_t b0 = run_args.base_ramwrt[ea];
if (b0 != b) {
video_setDirty(A2_DIRTY_FLAG);
}
}
} while (0);
run_args.base_ramwrt[ea] = b;
}
GLUE_C_WRITE(video__write_2e_hgr1_mixed)
{
do {
drawpage_mode_t mode = video_currentMixedMode(run_args.softswitches);
if (mode == DRAWPAGE_TEXT) {
break;
}
if ((run_args.softswitches & SS_PAGE2) && !(run_args.softswitches & SS_80STORE)) {
uint8_t b0 = run_args.base_ramwrt[ea];
if (b0 != b) {
video_setDirty(A2_DIRTY_FLAG);
}
}
} while (0);
run_args.base_ramwrt[ea] = b;
}
// ----------------------------------------------------------------------------
// GC softswitches : Game Controller (joystick/paddles)
#define JOY_STEP_USEC (3300.0 / 256.0)
#define CYCLES_PER_USEC (CLK_6502 / 1000000)
#define JOY_STEP_CYCLES (JOY_STEP_USEC / CYCLES_PER_USEC)
static uint8_t read_button0(void) {
uint8_t b0 = floating_bus() & (~0x80);
uint8_t b = run_args.joy_button0 & 0x80;
return b0 | b;
}
static uint8_t read_button1(void) {
uint8_t b0 = floating_bus() & (~0x80);
uint8_t b = run_args.joy_button1 & 0x80;
return b0 | b;
}
static uint8_t read_button2(void) {
uint8_t b = floating_bus() & (~0x80);
uint8_t b0 = run_args.joy_button0 & 0x80;
uint8_t b1 = run_args.joy_button1 & 0x80;
return b | b0 | b1;
}
static uint8_t read_gc_strobe(void) {
// Read Game Controller (paddle) strobe ...
// From _Understanding the Apple IIe_ :
// * 7-29, discussing PREAD : "The timer duration will vary between 2 and 3302 usecs"
// * 7-30, timer reset : "But the timer pulse may still be high from the previous [strobe access] and the timers are
// not retriggered by C07X' if they have not yet reset from the previous trigger"
if (run_args.gc_cycles_timer_0 <= 0)
{
run_args.gc_cycles_timer_0 = (int)((joy_x-5) * JOY_STEP_CYCLES);
}
if (run_args.gc_cycles_timer_1 <= 0)
{
run_args.gc_cycles_timer_1 = (int)(joy_y * JOY_STEP_CYCLES) + 2;
}
// NOTE (possible TODO FIXME): unimplemented GC2 and GC3 timers since they were not wired on the //e ...
return floating_bus();
}
static uint8_t read_gc0(void) {
if (run_args.gc_cycles_timer_0 <= 0)
{
run_args.gc_cycles_timer_0 = 0;
return 0;
}
return 0xFF;
}
static uint8_t read_gc1(void)
{
if (run_args.gc_cycles_timer_1 <= 0)
{
run_args.gc_cycles_timer_1 = 0;
return 0;
}
return 0xFF;
}
static uint8_t iie_read_gc2(void) {
return floating_bus();
}
static uint8_t iie_read_gc3(void) {
return floating_bus();
}
// ----------------------------------------------------------------------------
// LC : language card routines
static inline void _lc_to_auxmem() {
if (run_args.softswitches & SS_LCRAM) {
run_args.base_d000_rd += 0x2000;
run_args.base_e000_rd = language_card[0]-0xC000;
}
if (run_args.softswitches & SS_LCWRT) {
run_args.base_d000_wrt += 0x2000;
run_args.base_e000_wrt = language_card[0]-0xC000;
}
}
static uint8_t iie_c080(void) {
run_args.softswitches |= (SS_LCRAM|SS_BANK2);
run_args.softswitches &= ~(SS_LCSEC|SS_LCWRT);
run_args.base_d000_rd = language_banks[0]-0xD000;
run_args.base_e000_rd = language_card[0]-0xE000;
run_args.base_d000_wrt = 0;
run_args.base_e000_wrt = 0;
if (run_args.softswitches & SS_ALTZP) {
_lc_to_auxmem();
}
return floating_bus();
}
static uint8_t iie_c081(void) {
if (run_args.softswitches & SS_LCSEC) {
run_args.softswitches |= SS_LCWRT;
run_args.base_d000_wrt = language_banks[0]-0xD000;
run_args.base_e000_wrt = language_card[0]-0xE000;
}
run_args.softswitches |= (SS_LCSEC|SS_BANK2);
run_args.softswitches &= ~SS_LCRAM;
run_args.base_d000_rd = apple_ii_64k[0];
run_args.base_e000_rd = apple_ii_64k[0];
if (run_args.softswitches & SS_ALTZP) {
_lc_to_auxmem();
}
return floating_bus();
}
static uint8_t lc_c082(void) {
run_args.softswitches &= ~(SS_LCRAM|SS_LCWRT|SS_LCSEC);
run_args.softswitches |= SS_BANK2;
run_args.base_d000_rd = apple_ii_64k[0];
run_args.base_e000_rd = apple_ii_64k[0];
run_args.base_d000_wrt = 0;
run_args.base_e000_wrt = 0;
return floating_bus();
}
static uint8_t iie_c083(void) {
if (run_args.softswitches & SS_LCSEC) {
run_args.softswitches |= SS_LCWRT;
run_args.base_d000_wrt = language_banks[0]-0xD000;
run_args.base_e000_wrt = language_card[0]-0xE000;
}
run_args.softswitches |= (SS_LCSEC|SS_LCRAM|SS_BANK2);
run_args.base_d000_rd = language_banks[0]-0xD000;
run_args.base_e000_rd = language_card[0]-0xE000;
if (run_args.softswitches & SS_ALTZP) {
_lc_to_auxmem();
}
return floating_bus();
}
static uint8_t iie_c088(void) {
run_args.softswitches |= SS_LCRAM;
run_args.softswitches &= ~(SS_LCWRT|SS_LCSEC|SS_BANK2);
run_args.base_d000_rd = language_banks[0]-0xC000;
run_args.base_e000_rd = language_card[0]-0xE000;
run_args.base_d000_wrt = 0;
run_args.base_e000_wrt = 0;
if (run_args.softswitches & SS_ALTZP) {
_lc_to_auxmem();
}
return floating_bus();
}
static uint8_t iie_c089(void) {
if (run_args.softswitches & SS_LCSEC) {
run_args.softswitches |= SS_LCWRT;
run_args.base_d000_wrt = language_banks[0]-0xC000;
run_args.base_e000_wrt = language_card[0]-0xE000;
}
run_args.softswitches |= SS_LCSEC;
run_args.softswitches &= ~(SS_LCRAM|SS_BANK2);
run_args.base_d000_rd = apple_ii_64k[0];
run_args.base_e000_rd = apple_ii_64k[0];
if (run_args.softswitches & SS_ALTZP) {
_lc_to_auxmem();
}
return floating_bus();
}
static uint8_t lc_c08a(void) {
run_args.softswitches &= ~(SS_LCRAM|SS_LCWRT|SS_LCSEC|SS_BANK2);
run_args.base_d000_rd = apple_ii_64k[0];
run_args.base_e000_rd = apple_ii_64k[0];
run_args.base_d000_wrt = 0;
run_args.base_e000_wrt = 0;
return floating_bus();
}
static uint8_t iie_c08b(void) {
if (run_args.softswitches & SS_LCSEC) {
run_args.softswitches |= SS_LCWRT;
run_args.base_d000_wrt = language_banks[0]-0xC000;
run_args.base_e000_wrt = language_card[0]-0xE000;
}
run_args.softswitches |= (SS_LCRAM|SS_LCSEC);
run_args.softswitches &= ~SS_BANK2;
run_args.base_d000_rd = language_banks[0]-0xC000;
run_args.base_e000_rd = language_card[0]-0xE000;
if (run_args.softswitches & SS_ALTZP) {
_lc_to_auxmem();
}
return floating_bus();
}
// ----------------------------------------------------------------------------
// Misc //e softswitches and vm routines
static uint8_t iie_80store_off(void) {
assert((run_args.cpu65_rw&MEM_WRITE_FLAG));
if (!(run_args.softswitches & SS_80STORE)) {
return 0x0;//floating_bus();
}
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches &= ~(SS_80STORE|SS_TEXTRD|SS_TEXTWRT|SS_HGRRD|SS_HGRWRT);
run_args.base_textrd = apple_ii_64k[0];
run_args.base_textwrt = apple_ii_64k[0];
run_args.base_hgrrd = apple_ii_64k[0];
run_args.base_hgrwrt = apple_ii_64k[0];
if (run_args.softswitches & SS_RAMRD) {
run_args.softswitches |= (SS_TEXTRD|SS_HGRRD);
run_args.base_textrd = apple_ii_64k[1];
run_args.base_hgrrd = apple_ii_64k[1];
}
if (run_args.softswitches & SS_RAMWRT) {
run_args.softswitches |= (SS_TEXTWRT|SS_HGRWRT);
run_args.base_textwrt = apple_ii_64k[1];
run_args.base_hgrwrt = apple_ii_64k[1];
}
if (run_args.softswitches & SS_PAGE2) {
run_args.softswitches |= SS_SCREEN;
}
return 0x0;//floating_bus();
}
static uint8_t iie_80store_on(void) {
assert((run_args.cpu65_rw&MEM_WRITE_FLAG));
if (run_args.softswitches & SS_80STORE) {
return 0x0;//floating_bus();
}
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches |= SS_80STORE;
if (run_args.softswitches & SS_PAGE2) {
run_args.softswitches |= (SS_TEXTRD|SS_TEXTWRT);
run_args.base_textrd = apple_ii_64k[1];
run_args.base_textwrt = apple_ii_64k[1];
if (run_args.softswitches & SS_HIRES) {
run_args.softswitches |= (SS_HGRRD|SS_HGRWRT);
run_args.base_hgrrd = apple_ii_64k[1];
run_args.base_hgrwrt = apple_ii_64k[1];
}
} else {
run_args.softswitches &= ~(SS_TEXTRD|SS_TEXTWRT);
run_args.base_textrd = apple_ii_64k[0];
run_args.base_textwrt = apple_ii_64k[0];
if (run_args.softswitches & SS_HIRES) {
run_args.softswitches &= ~(SS_HGRRD|SS_HGRWRT);
run_args.base_hgrrd = apple_ii_64k[0];
run_args.base_hgrwrt = apple_ii_64k[0];
}
}
run_args.softswitches &= ~SS_SCREEN;
return 0x0;//floating_bus();
}
static uint8_t iie_ramrd_main(void) {
assert((run_args.cpu65_rw&MEM_WRITE_FLAG));
if (!(run_args.softswitches & SS_RAMRD)) {
return 0x0;//floating_bus();
}
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches &= ~SS_RAMRD;
run_args.base_ramrd = apple_ii_64k[0];
if (run_args.softswitches & SS_80STORE) {
if (!(run_args.softswitches & SS_HIRES)) {
run_args.softswitches &= ~SS_HGRRD;
run_args.base_hgrrd = apple_ii_64k[0];
}
} else {
run_args.softswitches &= ~(SS_TEXTRD|SS_HGRRD);
run_args.base_textrd = apple_ii_64k[0];
run_args.base_hgrrd = apple_ii_64k[0];
}
return 0x0;//floating_bus();
}
static uint8_t iie_ramrd_aux(void) {
assert((run_args.cpu65_rw&MEM_WRITE_FLAG));
if (run_args.softswitches & SS_RAMRD) {
return 0x0;//floating_bus();
}
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches |= SS_RAMRD;
run_args.base_ramrd = apple_ii_64k[1];
if (run_args.softswitches & SS_80STORE) {
if (!(run_args.softswitches & SS_HIRES)) {
run_args.softswitches |= SS_HGRRD;
run_args.base_hgrrd = apple_ii_64k[1];
}
} else {
run_args.softswitches |= (SS_TEXTRD|SS_HGRRD);
run_args.base_textrd = apple_ii_64k[1];
run_args.base_hgrrd = apple_ii_64k[1];
}
return 0x0;//floating_bus();
}
static uint8_t iie_ramwrt_main(void) {
assert((run_args.cpu65_rw&MEM_WRITE_FLAG));
if (!(run_args.softswitches & SS_RAMWRT)) {
return 0x0;// floating_bus();
}
run_args.softswitches &= ~SS_RAMWRT;
run_args.base_ramwrt = apple_ii_64k[0];
if (run_args.softswitches & SS_80STORE) {
if (!(run_args.softswitches & SS_HIRES)) {
run_args.softswitches &= ~SS_HGRWRT;
run_args.base_hgrwrt = apple_ii_64k[0];
}
} else {
run_args.softswitches &= ~(SS_TEXTWRT|SS_HGRWRT);
run_args.base_textwrt = apple_ii_64k[0];
run_args.base_hgrwrt = apple_ii_64k[0];
}
return 0x0;//floating_bus();
}
static uint8_t iie_ramwrt_aux(void) {
assert((run_args.cpu65_rw&MEM_WRITE_FLAG));
if (run_args.softswitches & SS_RAMWRT) {
return 0x0;//floating_bus();
}
run_args.softswitches |= SS_RAMWRT;
run_args.base_ramwrt = apple_ii_64k[1];
if (run_args.softswitches & SS_80STORE) {
if (!(run_args.softswitches & SS_HIRES)) {
run_args.softswitches |= SS_HGRWRT;
run_args.base_hgrwrt = apple_ii_64k[1];
}
} else {
run_args.softswitches |= (SS_TEXTWRT|SS_HGRWRT);
run_args.base_textwrt = apple_ii_64k[1];
run_args.base_hgrwrt = apple_ii_64k[1];
}
return 0x0;//floating_bus();
}
static uint8_t iie_altzp_main(void) {
assert((run_args.cpu65_rw&MEM_WRITE_FLAG));
if (!(run_args.softswitches & SS_ALTZP)) {
/* NOTE : test if ALTZP already off - due to d000-bank issues it is *needed*, not just a shortcut */
return 0x0;//floating_bus();
}
run_args.softswitches &= ~SS_ALTZP;
run_args.base_stackzp = apple_ii_64k[0];
if (run_args.softswitches & SS_LCRAM) {
run_args.base_d000_rd -= 0x2000;
run_args.base_e000_rd = language_card[0] - 0xE000;
}
if (run_args.softswitches & SS_LCWRT) {
run_args.base_d000_wrt -= 0x2000;
run_args.base_e000_wrt = language_card[0] - 0xE000;
}
return 0x0;//floating_bus();
}
static uint8_t iie_altzp_aux(void) {
assert((run_args.cpu65_rw&MEM_WRITE_FLAG));
if (run_args.softswitches & SS_ALTZP) {
/* NOTE : test if ALTZP already on - due to d000-bank issues it is *needed*, not just a shortcut */
return 0x0;//floating_bus();
}
run_args.softswitches |= SS_ALTZP;
run_args.base_stackzp = apple_ii_64k[1];
_lc_to_auxmem();
return 0x0;//floating_bus();
}
static uint8_t iie_80col_off(void) {
assert((run_args.cpu65_rw&MEM_WRITE_FLAG));
if (!(run_args.softswitches & SS_80COL)) {
return 0x0;//floating_bus();
}
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches &= ~SS_80COL;
return 0x0;//floating_bus();
}
static uint8_t iie_80col_on(void) {
assert((run_args.cpu65_rw&MEM_WRITE_FLAG));
if (run_args.softswitches & SS_80COL) {
return 0x0;//floating_bus();
}
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches |= SS_80COL;
return 0x0;//floating_bus();
}
static uint8_t iie_altchar_off(void) {
assert((run_args.cpu65_rw&MEM_WRITE_FLAG));
if (run_args.softswitches & SS_ALTCHAR) {
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches &= ~SS_ALTCHAR;
display_loadFont(/*start:*/0x40, /*qty:*/0x40, /*data:*/ucase_glyphs, FONT_MODE_FLASH);
}
return 0x0;//floating_bus();
}
static uint8_t iie_altchar_on(void) {
assert((run_args.cpu65_rw&MEM_WRITE_FLAG));
if (!(run_args.softswitches & SS_ALTCHAR)) {
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches |= SS_ALTCHAR;
display_loadFont(/*start:*/0x40, /*qty:*/0x20, /*data:*/mousetext_glyphs, FONT_MODE_MOUSETEXT);
display_loadFont(/*start:*/0x60, /*qty:*/0x20, /*data:*/lcase_glyphs, FONT_MODE_INVERSE);
}
return 0x0;//floating_bus();
}
static uint8_t iie_dhires_on(void) {
if (!(run_args.softswitches & SS_DHIRES)) {
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches |= SS_DHIRES;
}
return floating_bus();
}
static uint8_t iie_dhires_off(void) {
if (run_args.softswitches & SS_DHIRES) {
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches &= ~SS_DHIRES;
}
return floating_bus();
}
static uint8_t iie_check_vbl(void) {
bool isVBL = false;
video_scannerAddress(&isVBL);
uint8_t key = apple_ii_64k[0][0xC000];
return (key & ~0x80) | (isVBL ? 0x00 : 0x80);
}
static uint8_t iie_c3rom_peripheral(void) {
assert((run_args.cpu65_rw&MEM_WRITE_FLAG));
run_args.softswitches &= ~SS_C3ROM;
if (!(run_args.softswitches & SS_CXROM)) {
run_args.base_c3rom = (void *)iie_read_peripheral_card;
}
return 0x0;
}
static uint8_t iie_c3rom_internal(void) {
assert((run_args.cpu65_rw&MEM_WRITE_FLAG));
run_args.softswitches |= SS_C3ROM;
run_args.base_c3rom = apple_ii_64k[1];
return 0x0;
}
static uint8_t iie_cxrom_peripheral(void) {
assert((run_args.cpu65_rw&MEM_WRITE_FLAG));
run_args.softswitches &= ~SS_CXROM;
run_args.base_cxrom = (void *)iie_read_peripheral_card;
run_args.base_c4rom = (void *)iie_read_peripheral_card;
run_args.base_c5rom = (void *)iie_read_peripheral_card;
if (!(run_args.softswitches & SS_C3ROM)) {
run_args.base_c3rom = (void *)iie_read_peripheral_card;
}
return 0x0;
}
static uint8_t iie_cxrom_internal(void) {
assert((run_args.cpu65_rw&MEM_WRITE_FLAG));
run_args.softswitches |= SS_CXROM;
run_args.base_cxrom = apple_ii_64k[1];
run_args.base_c3rom = apple_ii_64k[1];
run_args.base_c4rom = apple_ii_64k[1];
run_args.base_c5rom = apple_ii_64k[1];
return 0x0;
}
// ----------------------------------------------------------------------------
// C0XX softswitch handlers
GLUE_C_READ(read_softswitch)
{
uint8_t sw = ea & 0xFF;
//return cpu65_c0_r[sw](ea, b);
// keyboard data and strobe (READ)
if (sw >= 0x00 && sw < 0x10) {
return apple_ii_64k[0][0xC000];
}
if (sw == 0x10) {
return read_keyboard_strobe();
}
if (sw >= 0x11 && sw < 0x20) {
// RDBNK2 switch
if (sw == 0x11) {
return (run_args.softswitches & SS_BANK2) SS_BANK2_SHIFT;
}
// RDLCRAM switch
if (sw == 0x12) {
return (run_args.softswitches & SS_LCRAM) SS_LCRAM_SHIFT;
}
// RAMRD switch
if (sw == 0x13) {
return (run_args.softswitches & SS_RAMRD) SS_RAMRD_SHIFT;
}
// RAMWRT switch
if (sw == 0x14) {
return (run_args.softswitches & SS_RAMWRT) SS_RAMWRT_SHIFT;
}
// SLOTCXROM switch
if (sw == 0x15) {
return (run_args.softswitches & SS_CXROM) SS_CXROM_SHIFT;
}
// ALTZP switch
if (sw == 0x16) {
return (run_args.softswitches & SS_ALTZP) SS_ALTZP_SHIFT;
}
// SLOTC3ROM switch
if (sw == 0x17) {
// reversed pattern!
return (run_args.softswitches & SS_C3ROM) ? 0x00 : 0x80;
}
// 80STORE switch
if (sw == 0x18) {
return (run_args.softswitches & SS_80STORE) SS_80STORE_SHFT;
}
// RDVBLBAR switch
if (sw == 0x19) {
return iie_check_vbl();
}
// TEXT check switch
if (sw == 0x1A) {
return (run_args.softswitches & SS_TEXT) SS_TEXT_SHIFT;
}
// MIXED check switch
if (sw == 0x1B) {
return (run_args.softswitches & SS_MIXED) SS_MIXED_SHIFT;
}
// PAGE2 check switch
if (sw == 0x1C) {
return (run_args.softswitches & SS_PAGE2) SS_PAGE2_SHIFT;
}
// HIRES check switch
if (sw == 0x1D) {
return (run_args.softswitches & SS_HIRES) SS_HIRES_SHIFT;
}
// ALTCHAR switch
if (sw == 0x1E) {
return (run_args.softswitches & SS_ALTCHAR) SS_ALTCHAR_SHFT;
}
// 80COL switch
if (sw == 0x1F) {
return (run_args.softswitches & SS_80COL) SS_80COL_SHIFT;
}
}
if (sw >= 0x30 && sw < 0x40) {
return speaker_toggle();
}
// TEXT switch
if (sw == 0x50) {
return read_switch_graphics();
}
if (sw == 0x51) {
return read_switch_text();
}
// MIXED switch
if (sw == 0x52) {
return read_switch_no_mixed();
}
if (sw == 0x53) {
return read_switch_mixed();
}
// PAGE2 switch
if (sw == 0x54) {
return iie_page2_off();
}
if (sw == 0x55) {
return iie_page2_on();
}
// HIRES switch
if (sw == 0x56) {
return iie_hires_off();
}
if (sw == 0x57) {
return iie_hires_on();
}
// Annunciator
if (sw >= 0x58 && sw < 0x5E) {
return iie_annunciator(ea);
}
// DHIRES
if (sw == 0x5E) {
return iie_dhires_on();
}
if (sw == 0x5F) {
return iie_dhires_off();
}
// game I/O switches
if (sw == 0x61 || sw == 0x69) {
return read_button0();
}
if (sw == 0x62 || sw == 0x6A) {
return read_button1();
}
if (sw == 0x63 || sw == 0x6B) {
return read_button2();
}
if (sw == 0x64 || sw == 0x6C) {
return read_gc0();
}
if (sw == 0x65 || sw == 0x6D) {
return read_gc1();
}
if (sw == 0x66) {
return iie_read_gc2();
}
if (sw == 0x67) {
return iie_read_gc3();
}
if (sw >= 0x70 && sw < 0x7E) {
return read_gc_strobe();
}
// IOUDIS switch & read_gc_strobe
// HACK FIXME TODO : double-check this stuff against AWin...
if (sw == 0x7E) {
read_gc_strobe();
return (run_args.softswitches & SS_IOUDIS) SS_IOUDIS_SHIFT;
}
if (sw == 0x7F) {
read_gc_strobe(); // HACK FIXME : is this correct?
return (run_args.softswitches & SS_DHIRES) SS_DHIRES_SHIFT;
}
// language card softswitches
if (sw == 0x80 || sw == 0x84) {
return iie_c080();
}
if (sw == 0x81 || sw == 0x85) {
return iie_c081();
}
if (sw == 0x82 || sw == 0x86) {
return lc_c082();
}
if (sw == 0x83 || sw == 0x87) {
return iie_c083();
}
if (sw == 0x88 || sw == 0x8C) {
return iie_c088();
}
if (sw == 0x89 || sw == 0x8D) {
return iie_c089();
}
if (sw == 0x8A || sw == 0x8E) {
return lc_c08a();
}
if (sw == 0x8B || sw == 0x8F) {
return iie_c08b();
}
if (sw >= 0xE0 && sw < 0xF0) {
// disk softswitches
// 0xC0Xi : X = slot 0x6 + 0x8 == 0xE
return disk6_ioRead(ea);
}
return floating_bus();
}
GLUE_C_WRITE(write_softswitch)
{
uint8_t sw = ea & 0xFF;
if (sw == 0x00) {
iie_80store_off();
}
if (sw == 0x01) {
iie_80store_on();
}
// RAMRD switch
if (sw == 0x02) {
iie_ramrd_main();
}
if (sw == 0x03) {
iie_ramrd_aux();
}
// RAMWRT switch
if (sw == 0x04) {
iie_ramwrt_main();
}
if (sw == 0x05) {
iie_ramwrt_aux();
}
// SLOTCXROM switch
if (sw == 0x06) {
iie_cxrom_peripheral();
}
if (sw == 0x07) {
iie_cxrom_internal();
}
// ALTZP switch
if (sw == 0x08) {
iie_altzp_main();
}
if (sw == 0x09) {
iie_altzp_aux();
}
// SLOTC3ROM switch
if (sw == 0x0A) {
iie_c3rom_internal();
}
if (sw == 0x0B) {
iie_c3rom_peripheral();
}
// 80COL switch
if (sw == 0x0C) {
iie_80col_off();
}
if (sw == 0x0D) {
iie_80col_on();
}
// ALTCHAR switch
if (sw == 0x0E) {
iie_altchar_off();
}
if (sw == 0x0F) {
iie_altchar_on();
}
if (sw >= 0x10 && sw < 0x20) {
read_keyboard_strobe();
}
if (sw >= 0x30 && sw < 0x40) {
speaker_toggle();
}
// TEXT switch
if (sw == 0x50) {
read_switch_graphics();
}
if (sw == 0x51) {
read_switch_text();
}
// MIXED switch
if (sw == 0x52) {
read_switch_no_mixed();
}
if (sw == 0x53) {
read_switch_mixed();
}
// PAGE2 switch
if (sw == 0x54) {
iie_page2_off();
}
if (sw == 0x55) {
iie_page2_on();
}
// HIRES switch
if (sw == 0x56) {
iie_hires_off();
}
if (sw == 0x57) {
iie_hires_on();
}
// Annunciator
if (sw >= 0x58 && sw < 0x5E) {
iie_annunciator(ea);
}
// DHIRES
if (sw == 0x5E) {
iie_dhires_on();
}
if (sw == 0x5F) {
iie_dhires_off();
}
if (sw >= 0x70 && sw < 0x7E) {
read_gc_strobe();
}
// IOUDIS switch & read_gc_strobe
// HACK FIXME TODO : double-check this stuff against AWin...
if (sw == 0x7E) {
run_args.softswitches |= SS_IOUDIS;
read_gc_strobe();
}
if (sw == 0x7F) {
run_args.softswitches &= ~SS_IOUDIS;
read_gc_strobe();
}
// language card softswitches
if (sw == 0x80 || sw == 0x84) {
iie_c080();
}
if (sw == 0x81 || sw == 0x85) {
iie_c081();
}
if (sw == 0x82 || sw == 0x86) {
lc_c082();
}
if (sw == 0x83 || sw == 0x87) {
iie_c083();
}
if (sw == 0x88 || sw == 0x8C) {
iie_c088();
}
if (sw == 0x89 || sw == 0x8D) {
iie_c089();
}
if (sw == 0x8A || sw == 0x8E) {
lc_c08a();
}
if (sw == 0x8B || sw == 0x8F) {
iie_c08b();
}
if (sw >= 0xE0 && sw < 0xF0) {
disk6_ioWrite(ea, b);
}
}
// ----------------------------------------------------------------------------
// //e expansion ROM
GLUE_C_READ(iie_read_slot_expansion)
{
// HACK TODO FIXME : how does the expansion slot get referenced? Need to handle other ROMs that might use this area
// ... Also Need moar tests ...
if (ea == 0xCFFF) {
// disable expansion ROM
return floating_bus();
}
return apple_ii_64k[1][ea];
}
GLUE_C_WRITE(debug_illegal_bcd)
{
LOG("Illegal/undefined BCD operation encountered, debug break on c_debug_illegal_bcd to debug...");
}
// ----------------------------------------------------------------------------
static void _initialize_iie_switches(void) {
run_args.base_stackzp = apple_ii_64k[0];
run_args.base_d000_rd = apple_ii_64k[0];
run_args.base_d000_wrt = language_banks[0] - 0xD000;
run_args.base_e000_rd = apple_ii_64k[0];
run_args.base_e000_wrt = language_card[0] - 0xE000;
run_args.base_ramrd = apple_ii_64k[0];
run_args.base_ramwrt = apple_ii_64k[0];
run_args.base_textrd = apple_ii_64k[0];
run_args.base_textwrt = apple_ii_64k[0];
run_args.base_hgrrd = apple_ii_64k[0];
run_args.base_hgrwrt= apple_ii_64k[0];
run_args.base_c3rom = (void *)iie_read_peripheral_card; // c3rom internal
run_args.base_c4rom = (void *)iie_read_peripheral_card; // c4rom internal
run_args.base_c5rom = (void *)iie_read_peripheral_card; // c5rom internal
run_args.base_cxrom = (void *)iie_read_peripheral_card; // cxrom peripheral
run_args.softswitches = SS_TEXT | SS_BANK2;
}
static void _initialize_font(void) {
display_loadFont(/*start:*/0x00, /*qty:*/0x40, /*data:*/ucase_glyphs, FONT_MODE_INVERSE);
display_loadFont(/*start:*/0x40, /*qty:*/0x40, /*data:*/ucase_glyphs, FONT_MODE_FLASH);
display_loadFont(/*start:*/0x80, /*qty:*/0x40, /*data:*/ucase_glyphs, FONT_MODE_NORMAL);
display_loadFont(/*start:*/0xC0, /*qty:*/0x20, /*data:*/ucase_glyphs, FONT_MODE_NORMAL);
display_loadFont(/*start:*/0xE0, /*qty:*/0x20, /*data:*/lcase_glyphs, FONT_MODE_NORMAL);
}
static void _initialize_apple_ii_memory(void) {
for (unsigned int i = 0; i < 0x10000; i++) {
apple_ii_64k[0][i] = 0;
apple_ii_64k[1][i] = 0;
}
// Stripe words of main memory on machine reset ...
// NOTE: cracked version of Joust will lock up without this
for (unsigned int i = 0; i < 0xC000;) {
apple_ii_64k[0][i++] = 0xFF;
apple_ii_64k[0][i++] = 0xFF;
i += 2;
}
#if !TESTING && !CPU_TRACING && !VIDEO_TRACING
// certain memory locations randomized at cold-boot ...
for (uint16_t addr = 0x0000; addr < 0xC000; addr += 0x200)
{
uint16_t word;
word = random();
apple_ii_64k[0][addr + 0x28] = (word >> 0) & 0xFF;
apple_ii_64k[0][addr + 0x29] = (word >> 8) & 0xFF;
word = random();
apple_ii_64k[0][addr + 0x68] = (word >> 0) & 0xFF;
apple_ii_64k[0][addr + 0x69] = (word >> 8) & 0xFF;
}
// memory initialization workarounds ...
{
// https://github.com/AppleWin/AppleWin/issues/206
// work around cold-booting bug in "Pooyan" which expects RNDL and RNDH to be non-zero
// "Dung Beetles, Ms. PacMan, Pooyan, Star Cruiser, Star Thief, Invas. Force.dsk"
uint16_t word = (uint16_t)random();
apple_ii_64k[0][0x4E] = 0x20 | ((word >> 0) & 0xFF);
apple_ii_64k[0][0x4F] = 0x20 | ((word >> 8) & 0xFF);
}
#endif
for (unsigned int i = 0; i < 8192; i++) {
language_card[0][i] = language_card[1][i] = 0;
}
for (unsigned int i = 0; i < 8192; i++) {
language_banks[0][i] = language_banks[1][i] = 0;
}
// load the rom from 0xC000, slot rom main, internal rom aux
for (unsigned int i = 0xC000; i < 0x10000; i++) {
apple_ii_64k[0][i] = apple_iie_rom[i - 0xC000];
apple_ii_64k[1][i] = apple_iie_rom[i - 0x8000];
}
for (unsigned int i = 0; i < 0x1000; i++) {
language_banks[0][i] = apple_iie_rom[i + 0x1000];
language_banks[1][i] = apple_iie_rom[i + 0x5000];
}
for (unsigned int i = 0; i < 0x2000; i++) {
language_card[0][i] = apple_iie_rom[i + 0x2000];
language_card[1][i] = apple_iie_rom[i + 0x6000];
}
apple_ii_64k[0][0xC000] = 0x00;
apple_ii_64k[1][0xC000] = 0x00;
}
static void _initialize_tables(void) {
for (unsigned int i = 0; i < 0x100; i++) {
cpu65_vmem_r[i] = iie_read_ram_default;
cpu65_vmem_w[i] = iie_write_ram_default;
}
for (unsigned int i = 0xC0; i < 0xD0; i++) {
cpu65_vmem_w[i] = write_ram_nop;
}
// language card read/write area
for (unsigned int i = 0xD0; i < 0xE0; i++) {
cpu65_vmem_w[i] = write_ram_bank;
cpu65_vmem_r[i] = read_ram_bank;
}
for (unsigned int i = 0xE0; i < 0x100; i++) {
cpu65_vmem_w[i] = write_ram_lc;
cpu65_vmem_r[i] = read_ram_lc;
}
// done common initialization
// initialize zero-page, //e specific
cpu65_vmem_r[0] = iie_read_ram_zpage_and_stack;
cpu65_vmem_w[0] = iie_write_ram_zpage_and_stack;
cpu65_vmem_r[1] = iie_read_ram_zpage_and_stack;
cpu65_vmem_w[1] = iie_write_ram_zpage_and_stack;
// initialize first text & hires page, which are specially bank switched
cpu65_vmem_r[4] = iie_read_ram_text_page0;
cpu65_vmem_r[5] = iie_read_ram_text_page0;
cpu65_vmem_r[6] = iie_read_ram_text_page0;
cpu65_vmem_r[7] = iie_read_ram_text_page0;
for (unsigned int i = 0x20; i < 0x40; i++) {
cpu65_vmem_r[i] = iie_read_ram_hires_page0;
}
// initialize text/lores & hires graphics routines
for (unsigned int y = 0; y < TEXT_ROWS; y++) {
uint16_t row = display_getVideoLineOffset(y);
for (unsigned int x = 0; x < TEXT_COLS; x++) {
unsigned int idx = row + x;
// NOTE : we are doing too much work here calculating the lo_byte positions, but eh, this is just one-time setup :P
// text/lores pages
if (y < 20) {
cpu65_vmem_w[(idx+0x400)>>8] = video__write_2e_text0;
cpu65_vmem_w[(idx+0x800)>>8] = video__write_2e_text1;
} else {
cpu65_vmem_w[(idx+0x400)>>8] = video__write_2e_text0_mixed;
cpu65_vmem_w[(idx+0x800)>>8] = video__write_2e_text1_mixed;
}
// hires/dhires pages
for (unsigned int i = 0; i < 8; i++) {
idx = row + (0x400*i) + x;
if (y < 20) {
cpu65_vmem_w[(idx+0x2000)>>8] = video__write_2e_hgr0;
cpu65_vmem_w[(idx+0x4000)>>8] = video__write_2e_hgr1;
} else {
cpu65_vmem_w[(idx+0x2000)>>8] = video__write_2e_hgr0_mixed;
cpu65_vmem_w[(idx+0x4000)>>8] = video__write_2e_hgr1_mixed;
}
}
}
}
// softswich rom
cpu65_vmem_r[0xC0] = read_softswitch;
cpu65_vmem_w[0xC0] = write_softswitch;
// slot i/o area
cpu65_vmem_r[0xC1] = iie_read_slotx; // slots 1
cpu65_vmem_r[0xC2] = iie_read_slotx; // slots 2
cpu65_vmem_r[0xC3] = iie_read_slot3; // slot 3 (80col)
cpu65_vmem_r[0xC4] = iie_read_slot4; // slot 4 - MB or Phasor
cpu65_vmem_r[0xC5] = iie_read_slot5; // slot 5 - MB #2
cpu65_vmem_r[0xC6] = iie_read_slotx; // slots 6
cpu65_vmem_r[0xC7] = iie_read_slotx; // slots 7
for (unsigned int i = 0xC8; i < 0xD0; i++) {
cpu65_vmem_r[i] = iie_read_slot_expansion;
}
// Peripheral card slot initializations ...
// HACK TODO FIXME : this needs to be tied to the UI/configuration system (once we have more/conflicting options)
// FIXME TODO : implement pluggable peripheral API
//if (mockingboard_inserted) {
mb_io_initialize(4, 5); /* Mockingboard(s) and/or Phasor in slots 4 & 5 */
//}
}
// ----------------------------------------------------------------------------
void vm_initialize(void) {
_initialize_font();
_initialize_apple_ii_memory();
_initialize_tables();
disk6_init();
_initialize_iie_switches();
joystick_reset();
}
bool vm_saveState(StateHelper_s *helper) {
bool saved = false;
int fd = helper->fd;
do {
uint8_t serialized[8] = { 0 };
serialized[0] = (uint8_t)((run_args.softswitches & 0xFF000000) >> 24);
serialized[1] = (uint8_t)((run_args.softswitches & 0xFF0000 ) >> 16);
serialized[2] = (uint8_t)((run_args.softswitches & 0xFF00 ) >> 8);
serialized[3] = (uint8_t)((run_args.softswitches & 0xFF ) >> 0);
if (!helper->save(fd, serialized, sizeof(run_args.softswitches))) {
break;
}
// save main/aux memory state
if (!helper->save(fd, apple_ii_64k[0], sizeof(apple_ii_64k))) {
break;
}
// save language card
if (!helper->save(fd, language_card[0], sizeof(language_card))) {
break;
}
// save language banks
if (!helper->save(fd, language_banks[0], sizeof(language_banks))) {
break;
}
// save offsets
serialized[0] = 0x0;
serialized[1] = 0x1;
serialized[2] = 0x2;
serialized[3] = 0x3;
serialized[4] = 0x4;
serialized[5] = 0x5;
if (!helper->save(fd, (run_args.base_ramrd == apple_ii_64k[0]) ? &serialized[0] : &serialized[1], 1)) {
break;
}
if (!helper->save(fd, (run_args.base_ramwrt == apple_ii_64k[0]) ? &serialized[0] : &serialized[1], 1)) {
break;
}
if (!helper->save(fd, (run_args.base_textrd == apple_ii_64k[0]) ? &serialized[0] : &serialized[1], 1)) {
break;
}
if (!helper->save(fd, (run_args.base_textwrt == apple_ii_64k[0]) ? &serialized[0] : &serialized[1], 1)) {
break;
}
if (!helper->save(fd, (run_args.base_hgrrd == apple_ii_64k[0]) ? &serialized[0] : &serialized[1], 1)) {
break;
}
if (!helper->save(fd, (run_args.base_hgrwrt == apple_ii_64k[0]) ? &serialized[0] : &serialized[1], 1)) {
break;
}
if (!helper->save(fd, (run_args.base_stackzp == apple_ii_64k[0]) ? &serialized[0] : &serialized[1], 1)) {
break;
}
if (!helper->save(fd, (run_args.base_c3rom == (void *)iie_read_peripheral_card) ? &serialized[0] : &serialized[1], 1)) {
break;
}
if (!helper->save(fd, (run_args.base_cxrom == (void *)iie_read_peripheral_card) ? &serialized[0] : &serialized[1], 1)) {
break;
}
if (run_args.base_d000_rd == apple_ii_64k[0]) {
if (!helper->save(fd, &serialized[0], 1)) { // base_d000_rd --> //e ROM
break;
}
} else if (run_args.base_d000_rd == language_banks[0] - 0xD000) {
if (!helper->save(fd, &serialized[2], 1)) { // base_d000_rd --> main LC mem
break;
}
} else if (run_args.base_d000_rd == language_banks[0] - 0xC000) {
if (!helper->save(fd, &serialized[3], 1)) { // base_d000_rd --> main LC mem
break;
}
} else if (run_args.base_d000_rd == language_banks[1] - 0xD000) {
if (!helper->save(fd, &serialized[4], 1)) { // base_d000_rd --> aux LC mem
break;
}
} else if (run_args.base_d000_rd == language_banks[1] - 0xC000) {
if (!helper->save(fd, &serialized[5], 1)) { // base_d000_rd --> aux LC mem
break;
}
} else {
LOG("OOPS ... language_banks[0] == %p base_d000_rd == %p", language_banks[0], run_args.base_d000_rd);
assert(false);
}
if (run_args.base_d000_wrt == 0) {
if (!helper->save(fd, &serialized[0], 1)) { // base_d000_wrt --> no write
break;
}
} else if (run_args.base_d000_wrt == language_banks[0] - 0xD000) {
if (!helper->save(fd, &serialized[2], 1)) { // base_d000_wrt --> main LC mem
break;
}
} else if (run_args.base_d000_wrt == language_banks[0] - 0xC000) {
if (!helper->save(fd, &serialized[3], 1)) { // base_d000_wrt --> main LC mem
break;
}
} else if (run_args.base_d000_wrt == language_banks[1] - 0xD000) {
if (!helper->save(fd, &serialized[4], 1)) { // base_d000_wrt --> aux LC mem
break;
}
} else if (run_args.base_d000_wrt == language_banks[1] - 0xC000) {
if (!helper->save(fd, &serialized[5], 1)) { // base_d000_wrt --> aux LC mem
break;
}
} else {
LOG("OOPS ... language_banks[0] == %p run_args.base_d000_wrt == %p", language_banks[0], run_args.base_d000_wrt);
assert(false);
}
if (run_args.base_e000_rd == apple_ii_64k[0]) {
if (!helper->save(fd, &serialized[0], 1)) { // base_e000_rd --> //e ROM
break;
}
} else if (run_args.base_e000_rd == language_card[0] - 0xE000) {
if (!helper->save(fd, &serialized[2], 1)) { // base_e000_rd --> main LC mem
break;
}
} else if (run_args.base_e000_rd == language_card[0] - 0xC000) {
if (!helper->save(fd, &serialized[3], 1)) { // base_e000_rd --> aux LC mem
break;
}
} else {
LOG("OOPS ... language_card[0] == %p run_args.base_e000_rd == %p", language_card[0], run_args.base_e000_rd);
assert(false);
}
if (run_args.base_e000_wrt == 0) {
if (!helper->save(fd, &serialized[0], 1)) { // base_e000_wrt --> no write
break;
}
} else if (run_args.base_e000_wrt == language_card[0] - 0xE000) {
if (!helper->save(fd, &serialized[2], 1)) { // base_e000_wrt --> main LC mem
break;
}
} else if (run_args.base_e000_wrt == language_card[0] - 0xC000) {
if (!helper->save(fd, &serialized[3], 1)) { // base_e000_wrt --> aux LC mem
break;
}
} else {
LOG("OOPS ... language_card[0] == %p run_args.base_e000_wrt == %p", language_card[0], run_args.base_e000_wrt);
assert(false);
}
saved = true;
} while (0);
return saved;
}
bool vm_loadState(StateHelper_s *helper) {
bool loaded = false;
int fd = helper->fd;
do {
uint8_t serialized[4] = { 0 };
if (!helper->load(fd, serialized, sizeof(uint32_t))) {
break;
}
run_args.softswitches = (uint32_t)(serialized[0] << 24);
run_args.softswitches |= (uint32_t)(serialized[1] << 16);
run_args.softswitches |= (uint32_t)(serialized[2] << 8);
run_args.softswitches |= (uint32_t)(serialized[3] << 0);
// load main/aux memory state
if (!helper->load(fd, apple_ii_64k[0], sizeof(apple_ii_64k))) {
break;
}
// load language card
if (!helper->load(fd, language_card[0], sizeof(language_card))) {
break;
}
// load language banks
if (!helper->load(fd, language_banks[0], sizeof(language_banks))) {
break;
}
// load offsets
uint8_t state = 0x0;
if (!helper->load(fd, &state, 1)) {
break;
}
run_args.base_ramrd = state == 0x0 ? apple_ii_64k[0] : apple_ii_64k[1];
if (!helper->load(fd, &state, 1)) {
break;
}
run_args.base_ramwrt = state == 0x0 ? apple_ii_64k[0] : apple_ii_64k[1];
if (!helper->load(fd, &state, 1)) {
break;
}
run_args.base_textrd = state == 0x0 ? apple_ii_64k[0] : apple_ii_64k[1];
if (!helper->load(fd, &state, 1)) {
break;
}
run_args.base_textwrt = state == 0x0 ? apple_ii_64k[0] : apple_ii_64k[1];
if (!helper->load(fd, &state, 1)) {
break;
}
run_args.base_hgrrd = state == 0x0 ? apple_ii_64k[0] : apple_ii_64k[1];
if (!helper->load(fd, &state, 1)) {
break;
}
run_args.base_hgrwrt = state == 0x0 ? apple_ii_64k[0] : apple_ii_64k[1];
if (!helper->load(fd, &state, 1)) {
break;
}
run_args.base_stackzp = state == 0x0 ? apple_ii_64k[0] : apple_ii_64k[1];
if (!helper->load(fd, &state, 1)) {
break;
}
run_args.base_c3rom = state == 0x0 ? (void *)iie_read_peripheral_card : apple_ii_64k[1];
if (!helper->load(fd, &state, 1)) {
break;
}
if (state == 0) {
run_args.base_cxrom = (void *)iie_read_peripheral_card;
run_args.base_c4rom = (void *)iie_read_peripheral_card;
run_args.base_c5rom = (void *)iie_read_peripheral_card;
} else {
run_args.base_cxrom = apple_ii_64k[1];
run_args.base_c4rom = apple_ii_64k[1];
run_args.base_c5rom = apple_ii_64k[1];
}
if (!helper->load(fd, &state, 1)) {
break;
}
switch (state) {
case 0:
run_args.base_d000_rd = apple_ii_64k[0];
break;
case 2:
run_args.base_d000_rd = language_banks[0] - 0xD000;
break;
case 3:
run_args.base_d000_rd = language_banks[0] - 0xC000;
break;
case 4:
run_args.base_d000_rd = language_banks[1] - 0xD000;
break;
case 5:
run_args.base_d000_rd = language_banks[1] - 0xC000;
break;
default:
LOG("Unknown state base_d000_rd %02x", state);
assert(false);
break;
}
if (!helper->load(fd, &state, 1)) {
break;
}
switch (state) {
case 0:
run_args.base_d000_wrt = 0;
break;
case 2:
run_args.base_d000_wrt = language_banks[0] - 0xD000;
break;
case 3:
run_args.base_d000_wrt = language_banks[0] - 0xC000;
break;
case 4:
run_args.base_d000_wrt = language_banks[1] - 0xD000;
break;
case 5:
run_args.base_d000_wrt = language_banks[1] - 0xC000;
break;
default:
LOG("Unknown state base_d000_wrt %02x", state);
assert(false);
break;
}
if (!helper->load(fd, &state, 1)) {
break;
}
switch (state) {
case 0:
run_args.base_e000_rd = apple_ii_64k[0];
break;
case 2:
run_args.base_e000_rd = language_card[0] - 0xE000;
break;
case 3:
run_args.base_e000_rd = language_card[0] - 0xC000;
break;
default:
LOG("Unknown state base_e000_rd %02x", state);
assert(false);
break;
}
if (!helper->load(fd, &state, 1)) {
break;
}
switch (state) {
case 0:
run_args.base_e000_wrt = 0;
break;
case 2:
run_args.base_e000_wrt = language_card[0] - 0xE000;
break;
case 3:
run_args.base_e000_wrt = language_card[0] - 0xC000;
break;
default:
LOG("Unknown state base_e000_wrt %02x", state);
assert(false);
break;
}
LOG("LOAD run_args.base_e000_wrt = %d", state);
loaded = true;
} while (0);
return loaded;
}
void vm_printSoftwitches(FILE *fp, bool output_mem, bool output_pseudo) {
fprintf(fp, "[");
if (run_args.softswitches & SS_TEXT) {
fprintf(fp, " TEXT");
}
if (run_args.softswitches & SS_MIXED) {
fprintf(fp, " MIXED");
}
if (run_args.softswitches & SS_HIRES) {
fprintf(fp, " HIRES");
}
if (run_args.softswitches & SS_PAGE2) {
fprintf(fp, " PAGE2");
}
if (run_args.softswitches & SS_80STORE) {
fprintf(fp, " 80STORE");
}
if (run_args.softswitches & SS_80COL) {
fprintf(fp, " 80COL");
}
if (run_args.softswitches & SS_DHIRES) {
fprintf(fp, " DHIRES");
}
if (run_args.softswitches & SS_ALTCHAR) {
fprintf(fp, " ALTCHAR");
}
if (output_mem) {
if (run_args.softswitches & SS_BANK2) {
fprintf(fp, " BANK2");
}
if (run_args.softswitches & SS_LCRAM) {
fprintf(fp, " LCRAM");
}
if (run_args.softswitches & SS_RAMRD) {
fprintf(fp, " RAMRD");
}
if (run_args.softswitches & SS_RAMWRT) {
fprintf(fp, " RAMWRT");
}
if (run_args.softswitches & SS_ALTZP) {
fprintf(fp, " ALTZP");
}
if (run_args.softswitches & SS_IOUDIS) {
fprintf(fp, " IOUDIS");
}
if (run_args.softswitches & SS_CXROM) {
fprintf(fp, " CXROM");
}
if (run_args.softswitches & SS_C3ROM) {
fprintf(fp, " C3ROM");
}
}
if (output_pseudo) {
// pseudo #1
if (run_args.softswitches & SS_LCSEC) {
fprintf(fp, " SS_LCSEC");
}
if (run_args.softswitches & SS_LCWRT) {
fprintf(fp, " SS_LCWRT");
}
// pseudo #2
if (run_args.softswitches & SS_SCREEN) {
fprintf(fp, " SS_SCREEN");
}
if (run_args.softswitches & SS_TEXTRD) {
fprintf(fp, " SS_TEXTRD");
}
if (run_args.softswitches & SS_TEXTWRT) {
fprintf(fp, " SS_TEXTWRT");
}
if (run_args.softswitches & SS_HGRRD) {
fprintf(fp, " SS_HGRRD");
}
if (run_args.softswitches & SS_HGRWRT) {
fprintf(fp, " SS_HGRWRT");
}
}
fprintf(fp, " ]");
}
#if VM_TRACING
void vm_trace_begin(const char *vm_file) {
if (vm_file) {
if (test_vm_fp) {
vm_trace_end();
}
test_vm_fp = fopen(vm_file, "w");
}
}
void vm_trace_end(void) {
if (test_vm_fp) {
fflush(test_vm_fp);
fclose(test_vm_fp);
test_vm_fp = NULL;
}
}
void vm_trace_toggle(const char *vm_file) {
if (test_vm_fp) {
vm_trace_end();
} else {
vm_trace_begin(vm_file);
}
}
void vm_trace_ignore(vm_trace_range_t range) {
// TODO ...
}
bool vm_trace_is_ignored(uint16_t ea) {
if ((ea < 0xC000) || (ea > 0xCFFF)) {
return true;
}
return false;
}
#endif
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