mirror of
https://github.com/elliotnunn/NetBoot.git
synced 2024-10-14 23:24:12 +00:00
1 line
3.6 KiB
C
1 line
3.6 KiB
C
#include <Files.h>
|
|
#include <Types.h>
|
|
#include <Events.h>
|
|
#include <Memory.h>
|
|
#include <Resources.h>
|
|
#include <Errors.h>
|
|
#include <Devices.h>
|
|
#include <SetUpA4.h>
|
|
#include <A4Stuff.h>
|
|
|
|
/* Name of driver to load */
|
|
#define kDrvrName "\p.Romdrv"
|
|
|
|
#define UTableBase (*(DCtlHandle**) 0x11C)
|
|
#define UnitNtryCnt (*(short*) 0x1D2)
|
|
|
|
struct Driver {
|
|
short drvrFlags;
|
|
short drvrDelay;
|
|
short drvrEMask;
|
|
short drvrMenu;
|
|
short drvrOpen;
|
|
short drvrPrime;
|
|
short drvrCtl;
|
|
short drvrStatus;
|
|
short drvrClose;
|
|
Str255 drvrName;
|
|
};
|
|
|
|
short MyFindSpaceInUnitTable(void);
|
|
OSErr MyOpenDriver(void);
|
|
|
|
/* Stolen nearly verbatim from IM: Devices */
|
|
short MyFindSpaceInUnitTable(void) {
|
|
Ptr curUTableBase, newUTableBase;
|
|
short curUTableEntries, newUTableEntries;
|
|
short refNum, unitNum;
|
|
long *entryarray;
|
|
|
|
/* get current unit table values from low memory globals */
|
|
curUTableEntries = UnitNtryCnt;
|
|
curUTableBase = (Ptr)UTableBase;
|
|
entryarray = (long*)UTableBase;
|
|
|
|
/* search for empty space in the current unit table */
|
|
for(unitNum = curUTableEntries-1; unitNum >= 48; unitNum--) {
|
|
if(entryarray[unitNum] == 0) {
|
|
return unitNum;
|
|
}
|
|
}
|
|
|
|
/* no space in the current table, so make a new one */
|
|
/* increase the size of the table by 16 (an arbitrary value) */
|
|
newUTableEntries = curUTableEntries + 16;
|
|
|
|
/* allocate space for the new table */
|
|
newUTableBase = NewPtrSysClear((long)newUTableEntries * sizeof(Handle));
|
|
if(newUTableBase == nil) return dsMemFullErr;
|
|
|
|
/* copy the old table to the new table */
|
|
BlockMove(curUTableBase, newUTableBase, (long)curUTableEntries * sizeof(Handle));
|
|
|
|
/* set the new unit table values in low memory */
|
|
UTableBase = (void*)newUTableBase;
|
|
UnitNtryCnt = newUTableEntries;
|
|
|
|
unitNum = newUTableEntries - 1;
|
|
return unitNum;
|
|
}
|
|
|
|
/* Stolen from IM: Devices */
|
|
OSErr MyOpenDriver(void)
|
|
{
|
|
Handle drvrHdl;
|
|
short drvrID;
|
|
short tempDrvrID;
|
|
ResType drvrType;
|
|
Str255 drvrName;
|
|
OSErr myErr = noErr;
|
|
struct IOParam pb;
|
|
char hackname[8];
|
|
struct Driver *drvrPtr;
|
|
DCtlHandle entryHdl;
|
|
|
|
hackname[0] = 7;
|
|
hackname[1] = '.';
|
|
hackname[2] = 'R';
|
|
hackname[3] = 'o';
|
|
hackname[4] = 'm';
|
|
hackname[5] = 'd';
|
|
hackname[6] = 'r';
|
|
hackname[7] = 'v';
|
|
|
|
tempDrvrID = MyFindSpaceInUnitTable();
|
|
if(tempDrvrID > 0) {
|
|
drvrHdl = GetResource((ResType)'DRVR', 192);
|
|
if(!drvrHdl) {
|
|
//DebugStr("\pCould not get named resource");
|
|
return openErr;
|
|
}
|
|
|
|
GetResInfo(drvrHdl, &drvrID, &drvrType, drvrName);
|
|
SetResInfo(drvrHdl, tempDrvrID, drvrName);
|
|
|
|
LoadResource(drvrHdl);
|
|
DetachResource(drvrHdl);
|
|
|
|
entryHdl = (DCtlHandle)NewHandleSysClear(40);
|
|
drvrPtr = *(struct Driver **)drvrHdl;
|
|
drvrPtr->drvrFlags |= dRAMBased | dCtlEnable | dNeedTime | dNeedLock | dReadEnable | dStatEnable;
|
|
drvrPtr->drvrDelay = 0x300;
|
|
|
|
(*entryHdl)->dCtlDriver = (Ptr)drvrHdl;
|
|
(*entryHdl)->dCtlFlags = drvrPtr->drvrFlags;
|
|
(*entryHdl)->dCtlDelay = drvrPtr->drvrDelay;
|
|
(*entryHdl)->dCtlEMask = drvrPtr->drvrEMask;
|
|
(*entryHdl)->dCtlMenu = drvrPtr->drvrMenu;
|
|
(*entryHdl)->dCtlPosition = 0;
|
|
(*entryHdl)->dCtlRefNum = ~tempDrvrID;
|
|
(*entryHdl)->dCtlWindow = NULL;
|
|
|
|
(*((DCtlHandle**)0x11C))[tempDrvrID] = entryHdl;
|
|
|
|
pb.ioCompletion = NULL;
|
|
pb.ioNamePtr = (StringPtr)hackname;
|
|
pb.ioPermssn = 0;
|
|
myErr = PBOpen((ParmBlkPtr)&pb, false);
|
|
if(myErr != noErr) {
|
|
//DebugStr("\pError with pbopen");
|
|
}
|
|
|
|
drvrHdl = GetResource((ResType)'DRVR', tempDrvrID);
|
|
SetResInfo(drvrHdl, drvrID, drvrName);
|
|
|
|
|
|
return(myErr);
|
|
} else {
|
|
return openErr;
|
|
}
|
|
}
|
|
|
|
int main(void) {
|
|
THz save, sys;
|
|
|
|
save = GetZone();
|
|
sys = SystemZone();
|
|
SetZone(sys);
|
|
if(MyOpenDriver() != 0) {
|
|
//DebugStr("\pProblem loading driver");
|
|
}
|
|
SetZone(save);
|
|
} |