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aiie
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aiie/bios.cpp

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#include "globals.h"
#include "bios.h"
#include "applevm.h"
#include "physicalkeyboard.h"
#include "physicaldisplay.h"
#include "cpu.h"
enum {
ACT_EXIT = 1,
ACT_RESET = 2,
ACT_COLDBOOT = 3,
ACT_MONITOR = 4,
ACT_DISPLAYTYPE = 5,
ACT_DEBUG = 6,
ACT_DISK1 = 7,
ACT_DISK2 = 8,
ACT_HD1 = 9,
ACT_HD2 = 10,
ACT_VOLPLUS = 11,
ACT_VOLMINUS = 12,
ACT_SUSPEND = 13,
ACT_RESTORE = 14,
ACT_PRIMODE = 15,
ACT_SPEED = 16,
ACT_ABOUT = 17,
};
#define NUM_TITLES 4
const char *menuTitles[NUM_TITLES] = { "Aiie", "VM", "Hardware", "Disks" };
const uint8_t titleWidths[NUM_TITLES] = {45, 28, 80, 45 };
const uint8_t aiieActions[] = { ACT_ABOUT };
const uint8_t vmActions[] = { ACT_EXIT, ACT_RESET, ACT_COLDBOOT, ACT_MONITOR,
ACT_DEBUG, ACT_SUSPEND, ACT_RESTORE };
const uint8_t hardwareActions[] = { ACT_DISPLAYTYPE, ACT_SPEED,
ACT_PRIMODE, ACT_VOLPLUS, ACT_VOLMINUS };
const uint8_t diskActions[] = { ACT_DISK1, ACT_DISK2,
ACT_HD1, ACT_HD2 };
#define CPUSPEED_HALF 0
#define CPUSPEED_FULL 1
#define CPUSPEED_DOUBLE 2
#define CPUSPEED_QUAD 3
// FIXME: abstract the pin # rather than repeating it here
#define RESETPIN 39
const char *staticPathConcat(const char *rootPath, const char *filePath)
{
static char buf[MAXPATH];
strncpy(buf, rootPath, sizeof(buf)-1);
strncat(buf, filePath, sizeof(buf)-strlen(buf)-1);
return buf;
}
BIOS::BIOS()
{
selectedMenu = 1;
selectedMenuItem = 0;
selectedFile = -1;
for (int8_t i=0; i<BIOS_MAXFILES; i++) {
// Put end terminators in place; strncpy won't copy over them
fileDirectory[i][BIOS_MAXPATH] = '\0';
}
}
BIOS::~BIOS()
{
}
void BIOS::DrawMenuBar()
{
uint8_t xpos = 0;
if (selectedMenu < 0) {
selectedMenu = NUM_TITLES-1;
}
selectedMenu %= NUM_TITLES;
#define XPADDING 2
for (int i=0; i<NUM_TITLES; i++) {
for (int x=0; x<titleWidths[i] + 2*XPADDING; x++) {
g_display->drawPixel(xpos+x, 0, 0xFFFF);
g_display->drawPixel(xpos+x, 16, 0xFFFF);
}
for (int y=0; y<=16; y++) {
g_display->drawPixel(xpos, y, 0xFFFF);
g_display->drawPixel(xpos + titleWidths[i] + 2*XPADDING, y, 0xFFFF);
}
xpos += XPADDING;
g_display->drawString(selectedMenu == i ? M_SELECTDISABLED : M_DISABLED,
xpos, 2, menuTitles[i]);
xpos += titleWidths[i] + XPADDING;
}
}
bool BIOS::runUntilDone()
{
g_filemanager->getRootPath(rootPath, sizeof(rootPath));
// FIXME: abstract these constant speeds
currentCPUSpeedIndex = CPUSPEED_FULL;
if (g_speed == 1023000/2)
currentCPUSpeedIndex = CPUSPEED_HALF;
if (g_speed == 1023000*2)
currentCPUSpeedIndex = CPUSPEED_DOUBLE;
if (g_speed == 1023000*4)
currentCPUSpeedIndex = CPUSPEED_QUAD;
int8_t prevAction = ACT_EXIT;
while (1) {
switch (prevAction = GetAction(prevAction)) {
case ACT_EXIT:
goto done;
case ACT_COLDBOOT:
ColdReboot();
goto done;
case ACT_RESET:
WarmReset();
goto done;
case ACT_MONITOR:
((AppleVM *)g_vm)->Monitor();
goto done;
case ACT_DISPLAYTYPE:
g_displayType++;
g_displayType %= 4; // FIXME: abstract max #
((AppleDisplay*)g_display)->displayTypeChanged();
break;
case ACT_ABOUT:
showAbout();
break;
case ACT_SPEED:
currentCPUSpeedIndex++;
#ifdef TEENSYDUINO
// The Teensy doesn't have any overhead to spare. Allow slowing
// down the virtual CPU, but not speeding it up...
currentCPUSpeedIndex %= 2;
#else
// Other variants can support double and quad speeds.
currentCPUSpeedIndex %= 4;
#endif
switch (currentCPUSpeedIndex) {
case CPUSPEED_HALF:
g_speed = 1023000/2;
break;
case CPUSPEED_DOUBLE:
g_speed = 1023000*2;
break;
case CPUSPEED_QUAD:
g_speed = 1023000*4;
break;
default:
g_speed = 1023000;
break;
}
break;
case ACT_DEBUG:
g_debugMode++;
g_debugMode %= 8; // FIXME: abstract max #
break;
case ACT_PRIMODE:
g_prioritizeDisplay = !g_prioritizeDisplay;
break;
case ACT_DISK1:
if (((AppleVM *)g_vm)->DiskName(0)[0] != '\0') {
((AppleVM *)g_vm)->ejectDisk(0);
} else {
if (SelectDiskImage("dsk,.po,nib")) {
((AppleVM *)g_vm)->insertDisk(0, staticPathConcat(rootPath, fileDirectory[selectedFile]), false);
goto done;
}
}
break;
case ACT_DISK2:
if (((AppleVM *)g_vm)->DiskName(1)[0] != '\0') {
((AppleVM *)g_vm)->ejectDisk(1);
} else {
if (SelectDiskImage("dsk,.po,nib")) {
((AppleVM *)g_vm)->insertDisk(1, staticPathConcat(rootPath, fileDirectory[selectedFile]), false);
goto done;
}
}
break;
case ACT_HD1:
if (((AppleVM *)g_vm)->HDName(0)[0] != '\0') {
((AppleVM *)g_vm)->ejectHD(0);
} else {
if (SelectDiskImage("img")) {
((AppleVM *)g_vm)->insertHD(0, staticPathConcat(rootPath, fileDirectory[selectedFile]));
goto done;
}
}
break;
case ACT_HD2:
if (((AppleVM *)g_vm)->HDName(1)[0] != '\0') {
((AppleVM *)g_vm)->ejectHD(1);
} else {
if (SelectDiskImage("img")) {
((AppleVM *)g_vm)->insertHD(1, staticPathConcat(rootPath, fileDirectory[selectedFile]));
goto done;
}
}
break;
case ACT_VOLPLUS:
g_volume ++;
if (g_volume > 15) {
g_volume = 15;
}
break;
case ACT_VOLMINUS:
g_volume--;
if (g_volume < 0) {
g_volume = 0;
}
break;
case ACT_SUSPEND:
g_display->clrScr();
g_display->drawString(M_SELECTED, 80, 100,"Suspending VM...");
g_display->flush();
// CPU is already suspended, so this is safe...
((AppleVM *)g_vm)->Suspend("suspend.vm");
break;
case ACT_RESTORE:
// CPU is already suspended, so this is safe...
g_display->clrScr();
g_display->drawString(M_SELECTED, 80, 100,"Resuming VM...");
g_display->flush();
((AppleVM *)g_vm)->Resume("suspend.vm");
break;
}
}
done:
// Undo whatever damage we've done to the screen
g_display->redraw();
AiieRect r = { 0, 0, 191, 279 };
g_display->blit(r);
// return true if any persistent setting changed that we want to store in eeprom
return true;
}
void BIOS::WarmReset()
{
g_cpu->Reset();
}
void BIOS::ColdReboot()
{
g_vm->Reset();
g_cpu->Reset();
}
uint8_t BIOS::GetAction(int8_t selection)
{
while (1) {
DrawMainMenu();
while (!g_keyboard->kbhit()
#ifdef TEENSYDUINO
&&
(digitalRead(RESETPIN) == HIGH)
#endif
) {
#ifndef TEENSYDUINO
usleep(100)
#endif
;
// Wait for either a keypress or the reset button to be pressed
}
#ifdef TEENSYDUINO
if (digitalRead(RESETPIN) == LOW) {
// wait until it's no longer pressed
while (digitalRead(RESETPIN) == HIGH)
;
delay(100); // wait long enough for it to debounce
// then return an exit code
return ACT_EXIT;
}
#else
// FIXME: look for F10 or ESC & return ACT_EXIT?
#endif
// selectedMenuItem and selectedMenu can go out of bounds here, and that's okay;
// the current menu (and the menu bar) will re-pin it appropriately...
switch (g_keyboard->read()) {
case PK_DARR:
selectedMenuItem++;
break;
case PK_UARR:
selectedMenuItem--;
break;
case PK_RARR:
selectedMenu++;
break;
case PK_LARR:
selectedMenu--;
break;
case PK_RET:
{
int8_t activeAction = getCurrentMenuAction();
if (activeAction > 0) {
return activeAction;
}
}
break;
}
}
}
int8_t BIOS::getCurrentMenuAction()
{
int8_t ret = -1;
switch (selectedMenu) {
case 0: // Aiie
if (isActionActive(aiieActions[selectedMenuItem]))
return aiieActions[selectedMenuItem];
break;
case 1: // VM
if (isActionActive(vmActions[selectedMenuItem]))
return vmActions[selectedMenuItem];
break;
case 2: // Hardware
if (isActionActive(hardwareActions[selectedMenuItem]))
return hardwareActions[selectedMenuItem];
break;
case 3: // Disks
if (isActionActive(diskActions[selectedMenuItem]))
return diskActions[selectedMenuItem];
break;
}
return ret;
}
bool BIOS::isActionActive(int8_t action)
{
// don't return true for disk events that aren't valid
switch (action) {
case ACT_EXIT:
case ACT_RESET:
case ACT_COLDBOOT:
case ACT_MONITOR:
case ACT_DISPLAYTYPE:
case ACT_SPEED:
case ACT_ABOUT:
case ACT_DEBUG:
case ACT_PRIMODE:
case ACT_DISK1:
case ACT_DISK2:
case ACT_HD1:
case ACT_HD2:
case ACT_SUSPEND:
case ACT_RESTORE:
return true;
case ACT_VOLPLUS:
return (g_volume < 15);
case ACT_VOLMINUS:
return (g_volume > 0);
}
/* NOTREACHED */
return false;
}
void BIOS::DrawAiieMenu()
{
if (selectedMenuItem < 0)
selectedMenuItem = sizeof(aiieActions)-1;
selectedMenuItem %= sizeof(aiieActions);
char buf[40];
for (int i=0; i<sizeof(aiieActions); i++) {
switch (aiieActions[i]) {
case ACT_ABOUT:
sprintf(buf, "About...");
break;
}
if (isActionActive(aiieActions[i])) {
g_display->drawString(selectedMenuItem == i ? M_SELECTED : M_NORMAL, 10, 20 + 14 * i, buf);
} else {
g_display->drawString(selectedMenuItem == i ? M_SELECTDISABLED : M_DISABLED, 10, 20 + 14 * i,
buf);
}
}
}
void BIOS::DrawVMMenu()
{
if (selectedMenuItem < 0)
selectedMenuItem = sizeof(vmActions)-1;
selectedMenuItem %= sizeof(vmActions);
char buf[40];
for (int i=0; i<sizeof(vmActions); i++) {
switch (vmActions[i]) {
case ACT_DEBUG:
{
const char *templateString = "Debug: %s";
switch (g_debugMode) {
case D_NONE:
sprintf(buf, templateString, "off");
break;
case D_SHOWFPS:
sprintf(buf, templateString, "Show FPS");
break;
case D_SHOWMEMFREE:
sprintf(buf, templateString, "Show mem free");
break;
case D_SHOWPADDLES:
sprintf(buf, templateString, "Show paddles");
break;
case D_SHOWPC:
sprintf(buf, templateString, "Show PC");
break;
case D_SHOWCYCLES:
sprintf(buf, templateString, "Show cycles");
break;
case D_SHOWBATTERY:
sprintf(buf, templateString, "Show battery");
break;
case D_SHOWTIME:
sprintf(buf, templateString, "Show time");
break;
}
}
break;
case ACT_EXIT:
strcpy(buf, "Resume");
break;
case ACT_RESET:
strcpy(buf, "Reset");
break;
case ACT_COLDBOOT:
strcpy(buf, "Cold Reboot");
break;
case ACT_MONITOR:
strcpy(buf, "Drop to Monitor");
break;
case ACT_SUSPEND:
strcpy(buf, "Suspend VM");
break;
case ACT_RESTORE:
strcpy(buf, "Restore VM");
break;
}
if (isActionActive(vmActions[i])) {
g_display->drawString(selectedMenuItem == i ? M_SELECTED : M_NORMAL, 10, 20 + 14 * i, buf);
} else {
g_display->drawString(selectedMenuItem == i ? M_SELECTDISABLED : M_DISABLED, 10, 20 + 14 * i, buf);
}
}
}
void BIOS::DrawHardwareMenu()
{
if (selectedMenuItem < 0)
selectedMenuItem = sizeof(hardwareActions)-1;
selectedMenuItem %= sizeof(hardwareActions);
char buf[40];
for (int i=0; i<sizeof(hardwareActions); i++) {
switch (hardwareActions[i]) {
case ACT_DISPLAYTYPE:
{
const char *templateString = "Display: %s";
switch (g_displayType) {
case m_blackAndWhite:
sprintf(buf, templateString, "B&W");
break;
case m_monochrome:
sprintf(buf, templateString, "Mono");
break;
case m_ntsclike:
sprintf(buf, templateString, "NTSC-like");
break;
case m_perfectcolor:
sprintf(buf, templateString, "RGB");
break;
}
}
break;
case ACT_SPEED:
{
const char *templateString = "CPU Speed: %s";
switch (currentCPUSpeedIndex) {
case CPUSPEED_HALF:
sprintf(buf, templateString, "Half [511.5 kHz]");
break;
case CPUSPEED_DOUBLE:
sprintf(buf, templateString, "Double (2.046 MHz)");
break;
case CPUSPEED_QUAD:
sprintf(buf, templateString, "Quad (4.092 MHz)");
break;
default:
sprintf(buf, templateString, "Normal (1.023 MHz)");
break;
}
}
break;
case ACT_PRIMODE:
if (g_prioritizeDisplay)
strcpy(buf, "Prioritize display over audio");
else
strcpy(buf, "Prioritize audio over display");
break;
case ACT_VOLPLUS:
strcpy(buf, "Volume +");
break;
case ACT_VOLMINUS:
strcpy(buf, "Volume -");
break;
}
if (isActionActive(hardwareActions[i])) {
g_display->drawString(selectedMenuItem == i ? M_SELECTED : M_NORMAL, 10, 20 + 14 * i, buf);
} else {
g_display->drawString(selectedMenuItem == i ? M_SELECTDISABLED : M_DISABLED, 10, 20 + 14 * i, buf);
}
}
// draw the volume bar
uint16_t volCutoff = 300.0 * (float)((float) g_volume / 15.0);
for (uint8_t y=234; y<=235; y++) {
for (uint16_t x = 0; x< 300; x++) {
g_display->drawPixel( x, y, x <= volCutoff ? 0xFFFF : 0x0010 );
}
}
}
void BIOS::DrawDisksMenu()
{
if (selectedMenuItem < 0)
selectedMenuItem = sizeof(diskActions)-1;
selectedMenuItem %= sizeof(diskActions);
char buf[80];
for (int i=0; i<sizeof(diskActions); i++) {
switch (diskActions[i]) {
case ACT_DISK1:
case ACT_DISK2:
{
const char *insertedDiskName = ((AppleVM *)g_vm)->DiskName(diskActions[i]==ACT_DISK2 ? 1 : 0);
// Get the name of the file; strip off the directory
const char *endPtr = &insertedDiskName[strlen(insertedDiskName)-1];
while (endPtr != insertedDiskName &&
*endPtr != '/') {
endPtr--;
}
if (*endPtr == '/') {
endPtr++;
}
if (insertedDiskName[0]) {
snprintf(buf, sizeof(buf), "Eject Disk %d [%s]", diskActions[i]==ACT_DISK2 ? 2 : 1, endPtr);
} else {
sprintf(buf, "Insert Disk %d", diskActions[i]==ACT_DISK2 ? 2 : 1);
}
}
break;
case ACT_HD1:
case ACT_HD2:
{
const char *insertedDiskName = ((AppleVM *)g_vm)->HDName(diskActions[i]==ACT_HD2 ? 1 : 0);
// Get the name of the file; strip off the directory
const char *endPtr = &insertedDiskName[strlen(insertedDiskName)-1];
while (endPtr != insertedDiskName &&
*endPtr != '/') {
endPtr--;
}
if (*endPtr == '/') {
endPtr++;
}
if (insertedDiskName[0]) {
snprintf(buf, sizeof(buf), "Remove HD %d [%s]", diskActions[i]==ACT_HD2 ? 2 : 1, endPtr);
} else {
sprintf(buf, "Connect HD %d", diskActions[i]==ACT_HD2 ? 2 : 1);
}
}
break;
}
if (isActionActive(diskActions[i])) {
g_display->drawString(selectedMenuItem == i ? M_SELECTED : M_NORMAL, 10, 20 + 14 * i, buf);
} else {
g_display->drawString(selectedMenuItem == i ? M_SELECTDISABLED : M_DISABLED, 10, 20 + 14 * i, buf);
}
}
}
void BIOS::DrawCurrentMenu()
{
switch (selectedMenu) {
case 0: // Aiie
DrawAiieMenu();
break;
case 1: // VM
DrawVMMenu();
break;
case 2: // Hardware
DrawHardwareMenu();
break;
case 3: // Disks
DrawDisksMenu();
break;
}
}
void BIOS::DrawMainMenu()
{
g_display->clrScr();
// g_display->drawString(M_NORMAL, 0, 0, "BIOS Configuration");
DrawMenuBar();
DrawCurrentMenu();
g_display->flush();
}
// return true if the user selects an image
// sets selectedFile (index; -1 = "nope") and fileDirectory[][] (names of up to BIOS_MAXFILES files)
bool BIOS::SelectDiskImage(const char *filter)
{
int8_t sel = 0;
int8_t page = 0;
while (1) {
DrawDiskNames(page, sel, filter);
while (!g_keyboard->kbhit())
;
switch (g_keyboard->read()) {
case PK_DARR:
sel++;
sel %= BIOS_MAXFILES + 2;
break;
case PK_UARR:
sel--;
if (sel < 0)
sel = BIOS_MAXFILES + 1;
break;
case PK_ESC:
return false;
case PK_RET:
if (sel == 0) {
page--;
if (page < 0) page = 0;
// else sel = BIOS_MAXFILES + 1;
}
else if (sel == BIOS_MAXFILES+1) {
page++;
//sel = 0;
} else {
if (strcmp(fileDirectory[sel-1], "../") == 0) {
// Go up a directory (strip a directory name from rootPath)
stripDirectory();
page = 0;
//sel = 0;
continue;
} else if (fileDirectory[sel-1][strlen(fileDirectory[sel-1])-1] == '/') {
// Descend in to the directory. FIXME: file path length?
strcat(rootPath, fileDirectory[sel-1]);
sel = 0;
page = 0;
continue;
} else {
selectedFile = sel - 1;
g_display->flush();
return true;
}
}
break;
}
}
g_display->flush();
}
void BIOS::stripDirectory()
{
rootPath[strlen(rootPath)-1] = '\0'; // remove the last character
while (rootPath[0] && rootPath[strlen(rootPath)-1] != '/') {
rootPath[strlen(rootPath)-1] = '\0'; // remove the last character again
}
// We're either at the previous directory, or we've nulled out the whole thing.
if (rootPath[0] == '\0') {
// Never go beyond this
strcpy(rootPath, "/");
}
}
void BIOS::DrawDiskNames(uint8_t page, int8_t selection, const char *filter)
{
uint8_t fileCount = GatherFilenames(page, filter);
g_display->clrScr();
g_display->drawString(M_NORMAL, 0, 12, "BIOS Configuration - pick disk");
if (page == 0) {
g_display->drawString(selection == 0 ? M_SELECTDISABLED : M_DISABLED, 10, 50, "<Prev>");
} else {
g_display->drawString(selection == 0 ? M_SELECTED : M_NORMAL, 10, 50, "<Prev>");
}
uint8_t i;
for (i=0; i<BIOS_MAXFILES; i++) {
if (i < fileCount) {
g_display->drawString((i == selection-1) ? M_SELECTED : M_NORMAL, 10, 50 + 14 * (i+1), fileDirectory[i]);
} else {
g_display->drawString((i == selection-1) ? M_SELECTDISABLED : M_DISABLED, 10, 50+14*(i+1), "-");
}
}
// FIXME: this doesn't accurately say whether or not there *are* more.
if (fileCount == BIOS_MAXFILES || fileCount == 0) {
g_display->drawString((i+1 == selection) ? M_SELECTDISABLED : M_DISABLED, 10, 50 + 14 * (i+1), "<Next>");
} else {
g_display->drawString(i+1 == selection ? M_SELECTED : M_NORMAL, 10, 50 + 14 * (i+1), "<Next>");
}
g_display->flush();
}
uint8_t BIOS::GatherFilenames(uint8_t pageOffset, const char *filter)
{
uint8_t startNum = 10 * pageOffset;
uint8_t count = 0; // number we're including in our listing
while (1) {
char fn[BIOS_MAXPATH];
int8_t idx = g_filemanager->readDir(rootPath, filter, fn, startNum + count, BIOS_MAXPATH);
if (idx == -1) {
return count;
}
idx++;
strncpy(fileDirectory[count], fn, BIOS_MAXPATH);
count++;
if (count >= BIOS_MAXFILES) {
return count;
}
}
}
void BIOS::showAbout()
{
g_display->clrScr();
g_display->drawString(M_SELECTED,
0,
0,
"Aiie! - an Apple //e emulator");
g_display->drawString(M_NORMAL,
15, 20,
"(c) 2017 Jorj Bauer");
g_display->drawString(M_NORMAL,
15, 38,
"https://github.com/JorjBauer/aiie/");
g_display->drawString(M_NORMAL,
0,
200,
"Press any key");
g_display->flush();
while (!g_keyboard->kbhit())
;
g_keyboard->read(); // throw out the keypress
}
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