IBM RT Series Hardware Reference Manual page 366

TNL SN20-9844 (March 1987) to 75X0235
TDDMA Cut/Paste From I/O Channel Memory
+
90 Degree Rotate (X'38')
This graphic operation performs in the same manner as graphic operation type X'37' except that
the destination is rotated 90 degrees
counterclockwise.
Note: *Notice the change in the queue load parameters.
Queue Load
Reg Function Value of Comment
Register
RA A23-A17
=
Source high
X'AOOO' Upper left start word address
RB
A16-A9
=
Source mid X'B008'
Upper left start word address
R4
A8-Al
=
Source low X'4009'
Upper left start word address
R3 Bit offset
X'3004' Starting bit of the starting word
R2 Skip (16 bit words) X'203D' Array width
=
X'080' bytes
R6 * X destination X'600A' Lower left corner exclusive
(XD-(DX
+
1)-1)
R7 * Y destination X'700F'
Lower left corner exclusive (YD)
RO *
10 bit 2's complement of X'03El'
Delta X
+
1
R5 *
Delta Y
+
1
X'5003'
Execute Command X'D389'
54 Extended Monochrome Graphics Adapter