IBM RT Series Hardware Reference Manual page 355

DESTINATION GRAPHIC WINDOW
TNL SN20-9844 (March 1987) to 75X0235
(XD, YD) LOWER RIGHT CORNER
exclusive
I...-_ _ _ _
S_O_U_R_C_E_T_E_X_T_W_I_N_D_O_W _ _ _ _ ....... } DELTA Y
+
1
~
IDYl
I...---------~--------------
(XS,YS) LOWER RIGHT CORNER
I
exclusive
DELTA X
+
1
=
(oX)
Figure 29 . 'And' a Test Source Window to a Graphic Destination Window.
Extended Monochrome Graphics Adapter 43