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Int 2F Fn DF00 - Hyperware Programs - Installation Check [c]
AX = DF00h
BX = product code
4248h ('BH') HyperStb
4448h ('DH') HyperDisk v4.20+
4B48h ('KH') HyperKey
5348h ('SH') HyperScreen
CX = 0000h
DX = 0000h
Return: AL = status
00h not installed
FFh multiplex number in use
CX = 5948h ('YH') if selected product installed
---HyperDisk---
BX = code segment of resident portion
DX = HyperDisk local data version
Program: HyperDisk is a shareware disk cache by HyperWare (Roger Cross)
Note: AH=DFh is the default; if it is already in use by some other program,
HyperWare programs then scan multiplex numbers from C0h through FFh
See Also: INT 13/AX=8EEDh
Index: installation check;HyperDisk|installation check;HyperStb
Index: installation check;HyperKey|installation check;HyperScreen
Index: HyperDisk;installation check|HyperStb;installation check
Index: HyperKey;installation check|HyperScreen;installation check
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