IBM 600 User Manual

   

 

Major Function Number - 1
Minor Function Number -  1
Parameter 1

- Request display status

Bit   - Built-in display (panel) status

=   : Disable
= 1 : Enable

Bit 1 - External CRT status

=   : Disable
= 1 : Enable

Bit 2 - TV status

=   : Disable
= 1 : Enable

Bits 5-3 : Reserved
Bit 6 - Monitor detection ignore

=   : Do not ignore
= 1 : Ignore

Bit 7 - Dual enable flag

=   : Disable
= 1 : Enable

Parameter 2

- Reserved

Parameter 3

- Reserved

Parameter 4

- When parameter 2 (bits 7- ) is  1h in return

of “Get Display Device State”:
Bits 31-16 : Reserved
Bits 15-  : Display selection mode
Bit   - Display selection mode

=   : LCD - CRT selection mode
= 1 : LCD - TV selection mode

Bits 7-1 : Reserved

Parameter 5

- Reserved

Return Code

- Error status

Auxiliary Return Code - Reserved
Parameter 1

- Reserved

Parameter 2

- Reserved

Parameter 3

- Reserved

Parameter 4

- Reserved

Parameter 5

- Reserved