}
//
-// Jaguar file loading (second stab at it...)
+// Jaguar file loading
// We do a more intelligent file analysis here instead of relying on (possible false)
// file extensions which people don't seem to give two shits about anyway. :-(
//
bool JaguarLoadFile(char * path)
{
-// NOTE: We can further clean this up by fixing JaguarLoadROM to load to a buffer
-// instead of assuming it goes into our ROM space. (Now, we do! :-)
uint8 * buffer = NULL;
jaguarROMSize = JaguarLoadROM(buffer, path);
-// jaguarROMSize = JaguarLoadROM(jaguarMainROM, path);
if (jaguarROMSize == 0)
{
-// WriteLog("VJ: Could not load ROM from file \"%s\"...\nAborting!\n", newPath);
- WriteLog("GUI: Could not load ROM from file \"%s\"...\nAborting load!\n", path);
-#warning "!!! Need error dialog here !!!"
-// Need to do something else here, like throw up an error dialog instead of aborting. !!! FIX !!!
- return false; // This is a start...
+ // It's up to the GUI to report errors, not us. :-)
+ WriteLog("FILE: Could not load ROM from file \"%s\"...\nAborting load!\n", path);
+ return false;
}
-// jaguarMainROMCRC32 = crc32_calcCheckSum(jaguarMainROM, jaguarROMSize);
jaguarMainROMCRC32 = crc32_calcCheckSum(buffer, jaguarROMSize);
WriteLog("CRC: %08X\n", (unsigned int)jaguarMainROMCRC32);
// TODO: Check for EEPROM file in ZIP file. If there is no EEPROM in the user's EEPROM
// directory, copy the one from the ZIP file, if it exists.
EepromInit();
jaguarRunAddress = 0x802000; // For non-BIOS runs, this is true
-// int fileType = ParseFileType(jaguarMainROM[0], jaguarMainROM[1], jaguarROMSize);
int fileType = ParseFileType(buffer[0], buffer[1], jaguarROMSize);
if (fileType == JST_ROM)
else if (fileType == JST_ALPINE)
{
// File extension ".ROM": Alpine image that loads/runs at $802000
- WriteLog("GUI: Setting up Alpine ROM... Run address: 00802000, length: %08X\n", jaguarROMSize);
-
-// for(int i=jaguarROMSize-1; i>=0; i--)
-// jaguarMainROM[0x2000 + i] = jaguarMainROM[i];
+ WriteLog("FILE: Setting up Alpine ROM... Run address: 00802000, length: %08X\n", jaguarROMSize);
memset(jagMemSpace + 0x800000, 0xFF, 0x2000);
memcpy(jagMemSpace + 0x802000, buffer, jaguarROMSize);
delete[] buffer;
else if (fileType == JST_ABS_TYPE1)
{
// For ABS type 1, run address == load address
-// uint32 loadAddress = GET32(jaguarMainROM, 0x16),
-// codeSize = GET32(jaguarMainROM, 0x02) + GET32(jaguarMainROM, 0x06);
uint32 loadAddress = GET32(buffer, 0x16),
codeSize = GET32(buffer, 0x02) + GET32(buffer, 0x06);
- WriteLog("GUI: Setting up homebrew (ABS-1)... Run address: %08X, length: %08X\n", loadAddress, codeSize);
-
-#if 0
- if (loadAddress < 0x800000)
- memcpy(jaguarMainRAM + loadAddress, jaguarMainROM + 0x24, codeSize);
- else
- {
- for(int i=codeSize-1; i>=0; i--)
- jaguarMainROM[(loadAddress - 0x800000) + i] = jaguarMainROM[i + 0x24];
- }
-#else
+ WriteLog("FILE: Setting up homebrew (ABS-1)... Run address: %08X, length: %08X\n", loadAddress, codeSize);
memcpy(jagMemSpace + loadAddress, buffer + 0x24, codeSize);
delete[] buffer;
-#endif
-
jaguarRunAddress = loadAddress;
return true;
}
else if (fileType == JST_ABS_TYPE2)
{
-// uint32 loadAddress = GET32(jaguarMainROM, 0x28), runAddress = GET32(jaguarMainROM, 0x24),
-// codeSize = GET32(jaguarMainROM, 0x18) + GET32(jaguarMainROM, 0x1C);
uint32 loadAddress = GET32(buffer, 0x28), runAddress = GET32(buffer, 0x24),
codeSize = GET32(buffer, 0x18) + GET32(buffer, 0x1C);
- WriteLog("GUI: Setting up homebrew (ABS-2)... Run address: %08X, length: %08X\n", runAddress, codeSize);
-
-#if 0
- if (loadAddress < 0x800000)
- memcpy(jaguarMainRAM + loadAddress, jaguarMainROM + 0xA8, codeSize);
- else
- {
- for(int i=codeSize-1; i>=0; i--)
- jaguarMainROM[(loadAddress - 0x800000) + i] = jaguarMainROM[i + 0xA8];
- }
-#else
+ WriteLog("FILE: Setting up homebrew (ABS-2)... Run address: %08X, length: %08X\n", runAddress, codeSize);
memcpy(jagMemSpace + loadAddress, buffer + 0xA8, codeSize);
delete[] buffer;
-#endif
-
jaguarRunAddress = runAddress;
return true;
}
else if (fileType == JST_JAGSERVER)
{
-// uint32 loadAddress = GET32(jaguarMainROM, 0x22), runAddress = GET32(jaguarMainROM, 0x2A);
uint32 loadAddress = GET32(buffer, 0x22), runAddress = GET32(buffer, 0x2A);
- WriteLog("GUI: Setting up homebrew (Jag Server)... Run address: %08X, length: %08X\n", runAddress, jaguarROMSize - 0x2E);
-// memcpy(jaguarMainRAM + loadAddress, jaguarMainROM + 0x2E, jaguarROMSize - 0x2E);
+ WriteLog("FILE: Setting up homebrew (Jag Server)... Run address: %08X, length: %08X\n", runAddress, jaguarROMSize - 0x2E);
memcpy(jagMemSpace + loadAddress, buffer + 0x2E, jaguarROMSize - 0x2E);
delete[] buffer;
jaguarRunAddress = runAddress;
}
// We can assume we have JST_NONE at this point. :-P
- // TODO: Add a dialog box that tells the user that they're trying to feed VJ a bogus file.
return false;
}
+//
+// "Alpine" file loading
+// Since the developers were coming after us with torches and pitchforks, we decided to
+// allow this kind of thing. ;-) But ONLY FOR THE DEVS, DAMMIT! O_O
+//
+bool AlpineLoadFile(char * path)
+{
+ uint8 * buffer = NULL;
+ jaguarROMSize = JaguarLoadROM(buffer, path);
+
+ if (jaguarROMSize == 0)
+ {
+ // It's up to the GUI to deal with failure, not us. ;-)
+ WriteLog("FILE: Could not load Alpine from file \"%s\"...\nAborting load!\n", path);
+ return false;
+ }
+
+ jaguarMainROMCRC32 = crc32_calcCheckSum(buffer, jaguarROMSize);
+ WriteLog("CRC: %08X\n", (unsigned int)jaguarMainROMCRC32);
+ EepromInit();
+
+ jaguarRunAddress = 0x802000;
+
+ WriteLog("FILE: Setting up Alpine ROM with non-standard length... Run address: 00802000, length: %08X\n", jaguarROMSize);
+
+ memset(jagMemSpace + 0x800000, 0xFF, 0x2000);
+ memcpy(jagMemSpace + 0x802000, buffer, jaguarROMSize);
+ delete[] buffer;
+
+// Maybe instead of this, we could try requiring the STUBULATOR ROM? Just a thought...
+ // Try setting the vector to say, $1000 and putting an instruction there that loops forever:
+ // This kludge works! Yeah!
+ SET32(jaguarMainRAM, 0x10, 0x00001000);
+ SET16(jaguarMainRAM, 0x1000, 0x60FE); // Here: bra Here
+
+ return true;
+}
+
//
// Get the length of a (possibly) gzipped file
//
projects / virtualjaguar / blobdiff