Installation guide

7 Additional Libraries OS-9 V2.4 on EUROCOM-17
36 Software Manual
Sys$DSCtrl1 Data size control 1 (A24)
❏ Input:
d0.w = 3 (Sys$DSCtrl1 function code)
d1.l = 1: A24/D32 transfers
0: A24/D16 transfers (*)
-1: read status only
❏ Output:
d0.l = Status
❏ Error Output:
cc = carry bit set
d1.w = error code if error
❏ Possible Errors:
E$Permit - you must belong to group 0 to use this function
❏ Function:
Sys$DSCtrl1 sets the data size on the VMEbus during master access at
the address range $FF00.0000 - FFFE.FFFF.
If d1.l equals -1, no action takes place. The status of this function is
always returned in d0.