ShuriZma
/
stella
mirror of https://github.com/stella-emu/stella.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

add some KidVid code comments copied from z26 1.58

This commit is contained in:
Thomas Jentzsch 2019-08-16 20:26:14 +02:00
parent 5eacc0a2b5
commit 8b44b9e49e
1 changed files with 16 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
src/emucore/KidVid.cxx
View File

@ -74,7 +74,7 @@ void KidVid::update()
myBlockIdx = KVBLOCKBITS;
myBlock = 0;
openSampleFile();
cerr << "myTape = " << myTape << endl;
cerr << "myTape = " << myTape << endl;
}
else if(myEvent.get(Event::KeyboardOne2))
{
@ -83,7 +83,7 @@ cerr << "myTape = " << myTape << endl;
myBlockIdx = KVBLOCKBITS;
myBlock = 0;
openSampleFile();
cerr << "myTape = " << myTape << endl;
cerr << "myTape = " << myTape << endl;
}
else if(myEvent.get(Event::KeyboardOne3))
{
@ -91,13 +91,13 @@ cerr << "myTape = " << myTape << endl;
{
myTape = 4;
myIdx = KVBLOCKBITS;
cerr << "myTape = " << myTape << endl;
cerr << "myTape = " << myTape << endl;
}
else /* no, Smurf Save The Day */
{
myTape = 1;
myIdx = 0;
cerr << "myTape = " << myTape << endl;
cerr << "myTape = " << myTape << endl;
}
myBlockIdx = KVBLOCKBITS;
myBlock = 0;
@ -114,6 +114,8 @@ cerr << "myTape = " << myTape << endl;
// Is the tape running?
if((myTape != 0) && ((IOPortA & 0b0001) == 0b0001) && !myTapeBusy)
{
// output bit pattern from high to low bits
// set / clear bit 3
IOPortA = (IOPortA & 0b11110111) | (((ourKVData[myIdx >> 3] << (myIdx & 0x07)) & 0x80) >> 4);
// increase to next bit
@ -124,13 +126,14 @@ cerr << "myTape = " << myTape << endl;
if(myBlockIdx == 0)
{
if(myBlock == 0)
// start tape identifying byte (00h..02h, 01h..03h)
myIdx = ((myTape * 6) + 12 - KVBLOCKS) * 8; //KVData00-KVData=12
else
{
if(myGame == KVSMURFS)
{
if(myBlock >= ourKVBlocks[myTape - 1])
myIdx = 42 * 8; //KVData80-KVData=42
if(myBlock >= ourKVBlocks[myTape - 1]) // after last block on tape?
myIdx = 42 * 8; //KVData80-KVData=42 ; start end of tape block (80h) (on tapes: 80h..82h, 81h..83h)
else
{
myIdx = 36 * 8;//KVPause-KVData=36
@ -139,8 +142,8 @@ cerr << "myTape = " << myTape << endl;
}
else
{
if(myBlock >= ourKVBlocks[myTape + 2 - 1])
myIdx = 42 * 8; //KVData80-KVData=42
if(myBlock >= ourKVBlocks[myTape + 2 - 1]) // after last block on tape?
myIdx = 42 * 8; //KVData80-KVData=42 ; start end of tape block (80h) (on tapes: 80h..82h, 81h..83h)
else
{
myIdx = 36 * 8;//KVPause-KVData=36
@ -154,7 +157,8 @@ cerr << "myTape = " << myTape << endl;
}
if (myFileOpened)
for(int i = 0; i < 1000; ++i)
// pretend that the music is played (5x faster :)
for(int i = 0; i < 44100/60/5; ++i)
getNextSampleByte();
// Now convert the register back into separate boolean values
@ -187,7 +191,7 @@ void KidVid::openSampleFile()
mySampleFile = fopen(kvNameTable[i], "rb");
if(mySampleFile != nullptr)
{
cerr << "opened file: " << kvNameTable[i] << endl;
cerr << "opened file: " << kvNameTable[i] << endl;
mySharedSampleFile = fopen("C:\\kvshared.wav", "rb");
if(mySharedSampleFile == nullptr)
{
@ -196,8 +200,8 @@ cerr << "opened file: " << kvNameTable[i] << endl;
}
else
{
cerr << "opened file: " << "kvshared.wav" << endl;
// fseek(mySampleFile, 45, SEEK_SET);
cerr << "opened file: " << "kvshared.wav" << endl;
//fseek(mySampleFile, 45, SEEK_SET);
myFileOpened = true;
}
}