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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_EXTERN_C_READ(speaker_toggle);
GLUE_C_READ(ram_nop)
{
(void)ea;
return (run_args.cpu65_rw&MEM_WRITE_FLAG) ? 0x0 : floating_bus();
}
GLUE_C_READ(read_unmapped_softswitch)
{
return c_ram_nop(ea);
}
GLUE_C_WRITE(write_unmapped_softswitch)
{
(void)ea;
(void)b;
}
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();
}
GLUE_C_READ(read_keyboard)
{
uint8_t b = apple_ii_64k[0][0xC000];
#if INTERFACE_TOUCH
// touch interface is expected to rate limit this callback by unregistering/NULLifying
void (*readCallback)(void) = keydriver_keyboardReadCallback;
if (readCallback) {
readCallback();
}
#endif
return b;
}
GLUE_C_READ(read_keyboard_strobe)
{
apple_ii_64k[0][0xC000] &= 0x7F;
apple_ii_64k[1][0xC000] &= 0x7F;
return apple_ii_64k[0][0xC000];
}
// ----------------------------------------------------------------------------
// graphics softswitches
GLUE_C_READ(iie_page2_off)
{
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();
}
GLUE_C_READ(iie_page2_on)
{
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();
}
GLUE_C_READ(iie_check_page2)
{
return (run_args.softswitches & SS_PAGE2) ? 0x80 : 0x00;
}
GLUE_C_READ(read_switch_graphics)
{
if (run_args.softswitches & SS_TEXT) {
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches &= ~SS_TEXT;
}
return floating_bus();
}
GLUE_C_READ(read_switch_text)
{
if (!(run_args.softswitches & SS_TEXT)) {
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches |= SS_TEXT;
}
return floating_bus();
}
GLUE_C_READ(iie_check_text)
{
return (run_args.softswitches & SS_TEXT) ? 0x80 : 0x00;
}
GLUE_C_READ(read_switch_no_mixed)
{
if (run_args.softswitches & SS_MIXED) {
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches &= ~SS_MIXED;
}
return floating_bus();
}
GLUE_C_READ(read_switch_mixed)
{
if (!(run_args.softswitches & SS_MIXED)) {
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches |= SS_MIXED;
}
return floating_bus();
}
GLUE_C_READ(iie_check_mixed)
{
return (run_args.softswitches & SS_MIXED) ? 0x80 : 0x00;
}
GLUE_C_READ(iie_annunciator)
{
if ((ea >= 0xC058) && (ea <= 0xC05B)) {
// TODO: alternate joystick management?
}
return (run_args.cpu65_rw&MEM_WRITE_FLAG) ? 0x0 : floating_bus();
}
GLUE_C_READ(iie_hires_off)
{
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();
}
GLUE_C_READ(iie_hires_on)
{
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_READ(iie_check_hires)
{
return (run_args.softswitches & SS_HIRES) ? 0x80 : 0x00;
}
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)) {
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)) {
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)) {
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)) {
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)) {
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)) {
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)) {
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)) {
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)
GLUE_C_READ(read_button0)
{
uint8_t b0 = floating_bus() & (~0x80);
uint8_t b = run_args.joy_button0 & 0x80;
return b0 | b;
}
GLUE_C_READ(read_button1)
{
uint8_t b0 = floating_bus() & (~0x80);
uint8_t b = run_args.joy_button1 & 0x80;
return b0 | b;
}
GLUE_C_READ(read_button2)
{
return run_args.joy_button0 | run_args.joy_button1;
}
GLUE_C_READ(read_gc_strobe)
{
// 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();
}
GLUE_C_READ(read_gc0)
{
if (run_args.gc_cycles_timer_0 <= 0)
{
run_args.gc_cycles_timer_0 = 0;
return 0;
}
return 0xFF;
}
GLUE_C_READ(read_gc1)
{
if (run_args.gc_cycles_timer_1 <= 0)
{
run_args.gc_cycles_timer_1 = 0;
return 0;
}
return 0xFF;
}
GLUE_C_READ(iie_read_gc2)
{
return floating_bus();
}
GLUE_C_READ(iie_read_gc3)
{
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;
}
}
GLUE_C_READ(iie_c080)
{
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();
}
GLUE_C_READ(iie_c081)
{
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();
}
GLUE_C_READ(lc_c082)
{
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();
}
GLUE_C_READ(iie_c083)
{
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();
}
GLUE_C_READ(iie_c088)
{
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();
}
GLUE_C_READ(iie_c089)
{
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();
}
GLUE_C_READ(lc_c08a)
{
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();
}
GLUE_C_READ(iie_c08b)
{
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();
}
GLUE_C_READ(iie_check_bank)
{
return (run_args.softswitches & SS_BANK2) ? 0x80 : 0x00;
}
GLUE_C_READ(iie_check_lcram)
{
return (run_args.softswitches & SS_LCRAM) ? 0x80 : 0x00;
}
// ----------------------------------------------------------------------------
// Misc //e softswitches and vm routines
GLUE_C_READ(iie_80store_off)
{
if (!(run_args.softswitches & SS_80STORE)) {
return 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 floating_bus();
}
GLUE_C_READ(iie_80store_on)
{
if (run_args.softswitches & SS_80STORE) {
return 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 floating_bus();
}
GLUE_C_READ(iie_check_80store)
{
return (run_args.softswitches & SS_80STORE) ? 0x80 : 0x00;
}
GLUE_C_READ(iie_ramrd_main)
{
if (!(run_args.softswitches & SS_RAMRD)) {
return 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 floating_bus();
}
GLUE_C_READ(iie_ramrd_aux)
{
if (run_args.softswitches & SS_RAMRD) {
return 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 floating_bus();
}
GLUE_C_READ(iie_check_ramrd)
{
return (run_args.softswitches & SS_RAMRD) ? 0x80 : 0x00;
}
GLUE_C_READ(iie_ramwrt_main)
{
if (!(run_args.softswitches & SS_RAMWRT)) {
return 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 floating_bus();
}
GLUE_C_READ(iie_ramwrt_aux)
{
if (run_args.softswitches & SS_RAMWRT) {
return 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 floating_bus();
}
GLUE_C_READ(iie_check_ramwrt)
{
return (run_args.softswitches & SS_RAMWRT) ? 0x80 : 0x00;
}
GLUE_C_READ_ALTZP(iie_altzp_main)
{
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 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 floating_bus();
}
GLUE_C_READ_ALTZP(iie_altzp_aux)
{
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 floating_bus();
}
run_args.softswitches |= SS_ALTZP;
run_args.base_stackzp = apple_ii_64k[1];
_lc_to_auxmem();
return floating_bus();
}
GLUE_C_READ(iie_check_altzp)
{
return (run_args.softswitches & SS_ALTZP) ? 0x80 : 0x00;
}
GLUE_C_READ(iie_80col_off)
{
if (!(run_args.softswitches & SS_80COL)) {
return floating_bus();
}
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches &= ~SS_80COL;
return floating_bus();
}
GLUE_C_READ(iie_80col_on)
{
if (run_args.softswitches & SS_80COL) {
return floating_bus();
}
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches |= SS_80COL;
return floating_bus();
}
GLUE_C_READ(iie_check_80col)
{
return (run_args.softswitches & SS_80COL) ? 0x80 : 0x00;
}
GLUE_C_READ(iie_altchar_off)
{
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 floating_bus();
}
GLUE_C_READ(iie_altchar_on)
{
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 floating_bus();
}
GLUE_C_READ(iie_check_altchar)
{
return (run_args.softswitches & SS_ALTCHAR) ? 0x80 : 0x00;
}
GLUE_C_READ(iie_ioudis_off)
{
run_args.softswitches &= ~SS_IOUDIS;
return c_read_gc_strobe(ea);
}
GLUE_C_READ(iie_ioudis_on)
{
run_args.softswitches |= SS_IOUDIS;
return c_read_gc_strobe(ea);
}
GLUE_C_READ(iie_check_ioudis)
{
c_read_gc_strobe(ea);
return (run_args.softswitches & SS_IOUDIS) ? 0x80 : 0x00;
}
GLUE_C_READ(iie_dhires_on)
{
if (!(run_args.softswitches & SS_DHIRES)) {
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches |= SS_DHIRES;
}
return floating_bus();
}
GLUE_C_READ(iie_dhires_off)
{
if (run_args.softswitches & SS_DHIRES) {
video_setDirty(A2_DIRTY_FLAG);
run_args.softswitches &= ~SS_DHIRES;
}
return floating_bus();
}
GLUE_C_READ(iie_check_dhires)
{
c_read_gc_strobe(ea); // HACK FIXME : is this correct?
return (run_args.softswitches & SS_DHIRES) ? 0x80 : 0x00;
}
GLUE_C_READ(iie_check_vbl)
{
bool isVBL = false;
video_scannerAddress(&isVBL);
uint8_t key = apple_ii_64k[0][0xC000];
return (key & ~0x80) | (isVBL ? 0x00 : 0x80);
}
GLUE_C_READ(iie_c3rom_peripheral)
{
run_args.softswitches &= ~SS_C3ROM;
if (!(run_args.softswitches & SS_CXROM)) {
run_args.base_c3rom = (void *)iie_read_peripheral_card;
}
return 0x0;
}
GLUE_C_READ(iie_c3rom_internal)
{
run_args.softswitches |= SS_C3ROM;
run_args.base_c3rom = apple_ii_64k[1];
return 0x0;
}
GLUE_C_READ(iie_check_c3rom)
{
return (run_args.softswitches & SS_C3ROM) ? 0x00 : 0x80; // reversed pattern
}
GLUE_C_READ(iie_cxrom_peripheral)
{
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;
}
GLUE_C_READ(iie_cxrom_internal)
{
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;
}
GLUE_C_READ(iie_check_cxrom)
{
return (run_args.softswitches & SS_CXROM) ? 0x80 : 0x00;
}
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_READ(debug_illegal_bcd)
{
LOG("Illegal/undefined BCD operation encountered, debug break on c_debug_illegal_bcd to debug...");
return 0;
}
// ----------------------------------------------------------------------------
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 = apple_ii_64k[1]; // c3rom internal
run_args.base_c4rom = apple_ii_64k[1]; // c4rom internal
run_args.base_c5rom = apple_ii_64k[1]; // c5rom internal
run_args.base_cxrom = (void *)iie_read_peripheral_card; // cxrom peripheral
}
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 J---- 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;
}
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 < 0x10000; i++) {
cpu65_vmem_r[i] = iie_read_ram_default;
cpu65_vmem_w[i] = iie_write_ram_default;
}
// language card read/write area
for (unsigned int i = 0xD000; i < 0xE000; i++) {
cpu65_vmem_w[i] = write_ram_bank;
cpu65_vmem_r[i] = read_ram_bank;
}
for (unsigned int i = 0xE000; i < 0x10000; i++) {
cpu65_vmem_w[i] = write_ram_lc;
cpu65_vmem_r[i] = read_ram_lc;
}
// done common initialization
// initialize zero-page, //e specific
for (unsigned int i = 0; i < 0x200; i++) {
cpu65_vmem_r[i] = iie_read_ram_zpage_and_stack;
cpu65_vmem_w[i] = iie_write_ram_zpage_and_stack;
}
// initialize first text & hires page, which are specially bank switched
//
// display_reset() below substitutes it's own hooks for all visible write locations affect the display, leaving our
// write-functions in place only at the `screen holes', hence the name.
for (unsigned int i = 0x400; i < 0x800; i++) {
cpu65_vmem_r[i] = iie_read_ram_text_page0;
cpu65_vmem_w[i] = video__write_2e_text0;
}
for (unsigned int i = 0x2000; i < 0x4000; i++) {
cpu65_vmem_r[i] = iie_read_ram_hires_page0;
cpu65_vmem_w[i] = video__write_2e_hgr0;
}
// softswich rom
for (unsigned int i = 0xC000; i < 0xC100; i++) {
cpu65_vmem_r[i] = read_unmapped_softswitch;
cpu65_vmem_w[i] = write_unmapped_softswitch;
}
// slot rom defaults
for (unsigned int i = 0xC100; i < 0xD000; i++) {
cpu65_vmem_r[i] = iie_read_ram_default;
cpu65_vmem_w[i] = ram_nop;
}
// keyboard data and strobe (READ)
for (unsigned int i = 0xC000; i < 0xC010; i++) {
cpu65_vmem_r[i] = read_keyboard;
}
for (unsigned int i = 0xC010; i < 0xC020; i++) {
cpu65_vmem_r[i] = cpu65_vmem_w[i] = read_keyboard_strobe;
}
// RDBNK2 switch
cpu65_vmem_r[0xC011] = iie_check_bank;
// RDLCRAM switch
cpu65_vmem_r[0xC012] = iie_check_lcram;
// 80STORE switch
cpu65_vmem_w[0xC000] = iie_80store_off;
cpu65_vmem_w[0xC001] = iie_80store_on;
cpu65_vmem_r[0xC018] = iie_check_80store;
// RAMRD switch
cpu65_vmem_w[0xC002] = iie_ramrd_main;
cpu65_vmem_w[0xC003] = iie_ramrd_aux;
cpu65_vmem_r[0xC013] = iie_check_ramrd;
// RAMWRT switch
cpu65_vmem_w[0xC004] = iie_ramwrt_main;
cpu65_vmem_w[0xC005] = iie_ramwrt_aux;
cpu65_vmem_r[0xC014] = iie_check_ramwrt;
// ALTZP switch
cpu65_vmem_w[0xC008] = iie_altzp_main;
cpu65_vmem_w[0xC009] = iie_altzp_aux;
cpu65_vmem_r[0xC016] = iie_check_altzp;
// 80COL switch
cpu65_vmem_w[0xC00C] = iie_80col_off;
cpu65_vmem_w[0xC00D] = iie_80col_on;
cpu65_vmem_r[0xC01F] = iie_check_80col;
// ALTCHAR switch
cpu65_vmem_w[0xC00E] = iie_altchar_off;
cpu65_vmem_w[0xC00F] = iie_altchar_on;
cpu65_vmem_r[0xC01E] = iie_check_altchar;
// SLOTC3ROM switch
cpu65_vmem_w[0xC00A] = iie_c3rom_internal;
cpu65_vmem_w[0xC00B] = iie_c3rom_peripheral;
cpu65_vmem_r[0xC017] = iie_check_c3rom;
// SLOTCXROM switch
cpu65_vmem_w[0xC006] = iie_cxrom_peripheral;
cpu65_vmem_w[0xC007] = iie_cxrom_internal;
cpu65_vmem_r[0xC015] = iie_check_cxrom;
// RDVBLBAR switch
cpu65_vmem_r[0xC019] = iie_check_vbl;
// TEXT switch
cpu65_vmem_r[0xC050] = cpu65_vmem_w[0xC050] = read_switch_graphics;
cpu65_vmem_r[0xC051] = cpu65_vmem_w[0xC051] = read_switch_text;
cpu65_vmem_r[0xC01A] = iie_check_text;
// MIXED switch
cpu65_vmem_r[0xC052] = cpu65_vmem_w[0xC052] = read_switch_no_mixed;
cpu65_vmem_r[0xC053] = cpu65_vmem_w[0xC053] = read_switch_mixed;
cpu65_vmem_r[0xC01B] = iie_check_mixed;
// PAGE2 switch
cpu65_vmem_r[0xC054] = cpu65_vmem_w[0xC054] = iie_page2_off;
cpu65_vmem_r[0xC01C] = iie_check_page2;
cpu65_vmem_r[0xC055] = cpu65_vmem_w[0xC055] = iie_page2_on;
// HIRES switch
cpu65_vmem_r[0xC01D] = iie_check_hires;
cpu65_vmem_r[0xC056] = cpu65_vmem_w[0xC056] = iie_hires_off;
cpu65_vmem_r[0xC057] = cpu65_vmem_w[0xC057] = iie_hires_on;
// game I/O switches
cpu65_vmem_r[0xC061] = cpu65_vmem_r[0xC069] = read_button0;
cpu65_vmem_r[0xC062] = cpu65_vmem_r[0xC06A] = read_button1;
cpu65_vmem_r[0xC063] = cpu65_vmem_r[0xC06B] = read_button2;
cpu65_vmem_r[0xC064] = cpu65_vmem_r[0xC06C] = read_gc0;
cpu65_vmem_r[0xC065] = cpu65_vmem_r[0xC06D] = read_gc1;
cpu65_vmem_r[0xC066] = iie_read_gc2;
cpu65_vmem_r[0xC067] = iie_read_gc3;
for (unsigned int i = 0xC070; i < 0xC080; i++) {
cpu65_vmem_r[i] = cpu65_vmem_w[i] = read_gc_strobe;
}
// IOUDIS switch & read_gc_strobe
cpu65_vmem_w[0xC07E] = iie_ioudis_on;
cpu65_vmem_w[0xC07F] = iie_ioudis_off; // HACK FIXME TODO : double-check this stuff against AWin...
cpu65_vmem_r[0xC07E] = iie_check_ioudis;
cpu65_vmem_r[0xC07F] = iie_check_dhires;
// Annunciator
for (unsigned int i = 0xC058; i <= 0xC05D; i++) {
cpu65_vmem_w[i] = cpu65_vmem_r[i] = iie_annunciator;
}
// DHIRES
cpu65_vmem_w[0xC05E] = cpu65_vmem_r[0xC05E] = iie_dhires_on;
cpu65_vmem_w[0xC05F] = cpu65_vmem_r[0xC05F] = iie_dhires_off;
// language card softswitches
cpu65_vmem_r[0xC080] = cpu65_vmem_w[0xC080] = cpu65_vmem_r[0xC084] = cpu65_vmem_w[0xC084] = iie_c080;
cpu65_vmem_r[0xC081] = cpu65_vmem_w[0xC081] = cpu65_vmem_r[0xC085] = cpu65_vmem_w[0xC085] = iie_c081;
cpu65_vmem_r[0xC082] = cpu65_vmem_w[0xC082] = cpu65_vmem_r[0xC086] = cpu65_vmem_w[0xC086] = lc_c082;
cpu65_vmem_r[0xC083] = cpu65_vmem_w[0xC083] = cpu65_vmem_r[0xC087] = cpu65_vmem_w[0xC087] = iie_c083;
cpu65_vmem_r[0xC088] = cpu65_vmem_w[0xC088] = cpu65_vmem_r[0xC08C] = cpu65_vmem_w[0xC08C] = iie_c088;
cpu65_vmem_r[0xC089] = cpu65_vmem_w[0xC089] = cpu65_vmem_r[0xC08D] = cpu65_vmem_w[0xC08D] = iie_c089;
cpu65_vmem_r[0xC08A] = cpu65_vmem_w[0xC08A] = cpu65_vmem_r[0xC08E] = cpu65_vmem_w[0xC08E] = lc_c08a;
cpu65_vmem_r[0xC08B] = cpu65_vmem_w[0xC08B] = cpu65_vmem_r[0xC08F] = cpu65_vmem_w[0xC08F] = iie_c08b;
// slot i/o area
for (unsigned int i = 0xC100; i < 0xC300; i++) {
cpu65_vmem_r[i] = iie_read_slotx; // slots 1 & 2 (x)
}
for (unsigned int i = 0xC300; i < 0xC400; i++) {
cpu65_vmem_r[i] = iie_read_slot3; // slot 3 (80col)
}
for (unsigned int i = 0xC400; i < 0xC500; i++) {
cpu65_vmem_r[i] = iie_read_slot4; // slot 4 - MB or Phasor
}
for (unsigned int i = 0xC500; i < 0xC600; i++) {
cpu65_vmem_r[i] = iie_read_slot5; // slot 5 - MB #2
}
for (unsigned int i = 0xC600; i < 0xC800; i++) {
cpu65_vmem_r[i] = iie_read_slotx; // slots 6 - 7 (x)
}
for (unsigned int i = 0xC800; i < 0xD000; i++) {
cpu65_vmem_r[i] = iie_read_slot_expansion;
}
display_reset();
// 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();
vm_reinitializeAudio();
disk6_init();
_initialize_iie_switches();
c_joystick_reset();
run_args.softswitches = SS_TEXT | SS_BANK2;
}
void vm_reinitializeAudio(void) {
for (unsigned int i = 0xC030; i < 0xC040; i++) {
cpu65_vmem_r[i] = cpu65_vmem_w[i] = speaker_toggle;
}
#warning TODO FIXME ... should unset MB/Phasor hooks if volume is zero ...
}
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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