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git-svn-id: svn://svn.cc65.org/cc65/trunk@1211 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2002-03-31 20:46:53 +00:00
parent 56caf8f80d
commit 7b89ebcecb
3 changed files with 513 additions and 1198 deletions
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1671
src/sim65/cpucore.c
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File diff suppressed because it is too large Load Diff

16
src/sim65/memory.c
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@ -54,7 +54,7 @@ static unsigned char RAM[0x10000];
void WriteMem (unsigned Addr, unsigned char Val)
void MemWriteByte (unsigned Addr, unsigned char Val)
/* Write a byte to a memory location */
{
RAM[Addr] = Val;
@ -62,7 +62,7 @@ void WriteMem (unsigned Addr, unsigned char Val)
unsigned char ReadMem (unsigned Addr)
unsigned char MemReadByte (unsigned Addr)
/* Read a byte from a memory location */
{
return RAM[Addr];
@ -70,23 +70,23 @@ unsigned char ReadMem (unsigned Addr)
unsigned ReadMemW (unsigned Addr)
unsigned MemReadWord (unsigned Addr)
/* Read a word from a memory location */
{
unsigned W = ReadMem (Addr++);
return (W | (ReadMem (Addr) << 8));
unsigned W = MemReadByte (Addr++);
return (W | (MemReadByte (Addr) << 8));
}
unsigned ReadZeroPageW (unsigned char Addr)
unsigned MemReadZPWord (unsigned char Addr)
/* Read a word from the zero page. This function differs from ReadMemW in that
* the read will always be in the zero page, even in case of an address
* overflow.
*/
{
unsigned W = ReadMem (Addr++);
return (W | (ReadMem (Addr) << 8));
unsigned W = MemReadByte (Addr++);
return (W | (MemReadByte (Addr) << 8));
}

8
src/sim65/memory.h
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@ -50,16 +50,16 @@
void WriteMem (unsigned Addr, unsigned char Val);
void MemWriteByte (unsigned Addr, unsigned char Val);
/* Write a byte to a memory location */
unsigned char ReadMem (unsigned Addr);
unsigned char MemReadByte (unsigned Addr);
/* Read a byte from a memory location */
unsigned ReadMemW (unsigned Addr);
unsigned MemReadWord (unsigned Addr);
/* Read a word from a memory location */
unsigned ReadZeroPageW (unsigned char Addr);
unsigned MemReadZPWord (unsigned char Addr);
/* Read a word from the zero page. This function differs from ReadMemW in that
* the read will always be in the zero page, even in case of an address
* overflow.