t_stat mt_boot (int32 unitno, DEVICE *dptr)
{
extern DIB sch_dib;
uint32 sch_dev;
if (decrom[0xD5] & dec_flgs) /* AL defined? */
return SCPE_NOFNC;
sim_tape_rewind (&mt_unit[unitno]); /* rewind */
sch_dev = sch_dib.dno + mt_dib.sch; /* sch dev # */
IOWriteBlk (BOOT_START, BOOT_LEN, boot_rom); /* copy boot */
IOWriteB (AL_DEV, mt_dib.dno + (unitno * o_MT0)); /* set dev no for unit */
IOWriteB (AL_IOC, 0xA1); /* set dev cmd */
IOWriteB (AL_SCH, sch_dev); /* set dev no for chan */
PC = BOOT_START;
return SCPE_OK;
}
VOID
IOWriteW(USHORT Port,
USHORT Buffer)
{
if (IoPortProc[Port].hVdd == INVALID_HANDLE_VALUE &&
IoPortProc[Port].IoHandlers.OutW)
{
IoPortProc[Port].IoHandlers.OutW(Port, Buffer);
}
else if (IoPortProc[Port].hVdd != NULL && IoPortProc[Port].hVdd != INVALID_HANDLE_VALUE &&
IoPortProc[Port].VddIoHandlers.outw_handler)
{
ASSERT(Port <= MAXWORD);
IoPortProc[Port].VddIoHandlers.outw_handler(Port, Buffer);
}
else
{
// FIXME: Is it ok on Little endian and Big endian ??
IOWriteB(Port, LOBYTE(Buffer));
IOWriteB(Port + sizeof(UCHAR), HIBYTE(Buffer));
}
}
VOID
IOWriteStrB(USHORT Port,
PUCHAR Buffer,
ULONG Count)
{
if (IoPortProc[Port].hVdd == INVALID_HANDLE_VALUE &&
IoPortProc[Port].IoHandlers.OutsB)
{
IoPortProc[Port].IoHandlers.OutsB(Port, Buffer, Count);
}
else if (IoPortProc[Port].hVdd != NULL && IoPortProc[Port].hVdd != INVALID_HANDLE_VALUE &&
IoPortProc[Port].VddIoHandlers.outsb_handler)
{
ASSERT(Port <= MAXWORD);
ASSERT(Count <= MAXWORD);
IoPortProc[Port].VddIoHandlers.outsb_handler(Port, Buffer, (WORD)Count);
}
else
{
while (Count--) IOWriteB(Port, *Buffer++);
}
}
VOID FASTCALL
EmulatorWriteIo(PFAST486_STATE State,
USHORT Port,
PVOID Buffer,
ULONG DataCount,
UCHAR DataSize)
{
UNREFERENCED_PARAMETER(State);
if (DataSize == 0 || DataCount == 0) return;
if (DataSize == sizeof(UCHAR))
{
if (DataCount == 1)
IOWriteB(Port, *(PUCHAR)Buffer);
else
IOWriteStrB(Port, Buffer, DataCount);
}
else if (DataSize == sizeof(USHORT))
{
if (DataCount == 1)
IOWriteW(Port, *(PUSHORT)Buffer);
else
IOWriteStrW(Port, Buffer, DataCount);
}
else if (DataSize == sizeof(ULONG))
{
if (DataCount == 1)
IOWriteD(Port, *(PULONG)Buffer);
else
IOWriteStrD(Port, Buffer, DataCount);
}
else
{
PUCHAR Address = (PUCHAR)Buffer;
while (DataCount--)
{
ULONG CurrentPort = Port;
ULONG Count;
UCHAR NewDataSize = DataSize;
/* Write dword */
Count = NewDataSize >> 2; // NewDataSize / sizeof(ULONG);
NewDataSize = NewDataSize & 3; // NewDataSize % sizeof(ULONG);
while (Count--)
{
IOWriteD(CurrentPort, *(PULONG)Address);
CurrentPort += sizeof(ULONG);
Address += sizeof(ULONG);
}
/* Write word */
Count = NewDataSize >> 1; // NewDataSize / sizeof(USHORT);
NewDataSize = NewDataSize & 1; // NewDataSize % sizeof(USHORT);
while (Count--)
{
IOWriteW(CurrentPort, *(PUSHORT)Address);
CurrentPort += sizeof(USHORT);
Address += sizeof(USHORT);
}
/* Write byte */
Count = NewDataSize; // NewDataSize / sizeof(UCHAR);
// NewDataSize = NewDataSize % sizeof(UCHAR);
while (Count--)
{
IOWriteB(CurrentPort, *(PUCHAR)Address);
CurrentPort += sizeof(UCHAR);
Address += sizeof(UCHAR);
}
}
}
}
