UNDESCRIBED DATAS

New reason codes in routines

• OS_SCI
when IN: A=screen file reason and B=0,
OUT: BHL screen file address without moving them.
It was especially done for getting the screen file address.

• OS_NQ / NQ_Ain
OUT: BHL=app name and new BDE=DOR address

• OS_DOR
new reason $0B : is exactly DR_RD (09)

• OS_SI
new reason $06 : ? (at $02 $A506)

• OS_SR
new reason $02 : ? (at $07 $B25D)

Explanations

• OS_ERH
The call level is incremented each time a system call is called within another. That's why when you set the error handler from an application you call this OS_ERH routine with a call level zero : A=0.

Never implemented routines

• DC_SCN is not implemented
• OS_SR / SR_CRM $06 : Card removal is not implemented
• OS_SR / SR_CIN $07 : Card insertion is not implemented
• Index, there is no bug for []ZZZ application key : it is not implemented.

Thierry PEYCRU (Zlab), February 1998.