IBM 770 manual SMAPI BIOS B-25, Get Pointing Device

Get Pointing Device	State
Input Field
Major Function Number -		11
Minor Function Number -		ð2
Parameter 1	-	Bits	15-8 Request type
		=	ððh	- Current hardware
		=	ð1h	- CMOS (effective after reboot)
		Bits	7-ð	Reserved
Parameter 2	-	Reserved
Parameter 3	-	Reserved
Parameter 4	-	Reserved
Parameter 5	-	Reserved
Output Field
Return Code	-	Error status
Auxiliary Return Code -		Reserved
Parameter 1	-	Bits	15-8 Pointing device current status
		Bits	1ð,	8 - Built-in pointing device control
		=	ðð : Disable
		=	ð1 : Enable
		=	1ð : Auto
		=	11 : Reserved

Bit 9 - External pointing device status

	=	ð : Disable
	=	1	: Enable
	Bits	15-11: Reserved
	Bits	7-ð		Pointing device capability
	Bit ð - Built-in pointing device status
	=	ð : Status is not controllable
	=	1	: Status is controllable
	Bit 1 - External pointing device status
	=	ð : Status is not controllable
	=	1	: Status is controllable
	Bit 2 - Built-in pointing device auto control
	=	ð : Not support
	=	1	: Support
Parameter 2	- Reserved
Parameter 3	- Reserved
Parameter 4	- Reserved
Parameter 5	- Reserved

SMAPI BIOS B-25