Installation guide

7 Additional Libraries OS-9 V2.4 on EUROCOM-17
38 Software Manual
Sys$BlkDisp Enable/disable hex display
❏ Input:
d0.w = 6 (Sys$BlkDisp function code)
d1.l = 1: enables hex display (*)
0: disables hex display
-1: read status only
❏ Output:
d0.l = Status
❏ Error Output:
cc = carry bit set
d1.w = error code if error
❏ Possible Errors:
E$Permit - you must belong to group 0 to use this function
❏ Function:
Sys$BlkDisp controls the Blank input of the hex display at the front
panel.
If d1.l equals -1, no action takes place. The status of this function is
always returned in d0.