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Added NUL

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1979
This commit is contained in:
Peter Veenstra 2004-09-15 18:52:00 +00:00
parent 8b611eb817
commit b11c036b84
1 changed files with 24 additions and 0 deletions
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24
src/dos/dos_devices.cpp
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@ -34,6 +34,27 @@
static DOS_Device * devices[MAX_DEVICES];
static Bit32u device_count;
class device_NUL : public DOS_Device {
public:
device_NUL() { name="NUL"; };
bool Read(Bit8u * data,Bit16u * size) {
for(Bitu i = 0; i < *size;i++)
data[i]=0;
LOG(LOG_IOCTL,LOG_NORMAL)("NUL:READ");
return true;
}
bool Write(Bit8u * data,Bit16u * size) {
LOG(LOG_IOCTL,LOG_NORMAL)("NUL:WRITE");
return true;
}
bool Seek(Bit32u * pos,Bit32u type) {
LOG(LOG_IOCTL,LOG_NORMAL)("NUL:SEEK");
return true;
}
bool Close() { return true; }
Bit16u GetInformation(void) { return 0x8004; }
};
Bit8u DOS_FindDevice(char * name) {
/* loop through devices */
Bit8u index=0;
@ -73,5 +94,8 @@ void DOS_SetupDevices(void) {
DOS_Device * newdev;
newdev=new device_CON();
DOS_AddDevice(newdev);
DOS_Device * newdev2;
newdev2=new device_NUL();
DOS_AddDevice(newdev2);
}