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Epson Research and Development Page 39
Vancouver Design Center
Programming Notes and Examples S1D13708
Issue Date: 01/11/20 X39A-G-003-01
ADVANCE
D
IN
F
ORMATION
Subje
ct to C
ha
nge
PIP
+
Window Enable
The PIP
+
Window Enable bit enables a PIP
+
window within the main window. The loca-
tion of the PIP
+
window within the landscape window is determined by the PIP
+
X Posi-
tion registers (REG[84h],REG[85h],REG[8Ch],REG[8Dh]) and PIP
+
Y Position registers
(REG[88h],REG[89h],REG[90h],REG[91h]). The PIP
+
window has its own Display Start
Address registers (REG[7Eh],REG[7Dh],REG[7Ch]) and Line Address Offset registers
(REG[81h],REG[80h]). The PIP
+
window shares the same color depth and SwivelView
TM
orientation as the main window.
PIP
+
Display Start Address
The PIP
+
Display Start Address register is a DWORD which represents an address that
points to the start of the PIP
+
window image in the display buffer. An address of 0 is the
start of the display buffer. For the following PIP
+
descriptions, the desired byte address is
the starting display address for the PIP
+
window image.
In SwivelView 0°, program the start address
= desired byte address ÷ 4
In SwivelView 90°, program the start address
= ((desired byte address + (PIP
+
width × bpp ÷ 8)
+ ((4 - (PIP
+
width × bpp ÷ 8)) & 03h)) ÷ 4) - 1
In SwivelView 180°, program the start address
= ((desired byte address + (PIP
+
Stride × (PIP
+
height − 1))
+ (PIP
+
width × bpp ÷ 8) + ((4 - (PIP
+
width × bpp ÷ 8)) & 03h)) ÷ 4) - 1
In SwivelView 270°, program the start address
= (desired byte address + ((PIP
+
height - 1) × PIP
+
Stride)) ÷ 4
PIP
+
Window Display Start Address Register 0
REG[7C] Read/Write
PIP
+
Window Display Start Address Bits 7-0
76543210
PIP
+
Window Display Start Address Register 1
REG[7Dh] Read/Write
PIP
+
Window Display Start Address Bits 15-8
76543210
PIP
+
Window Display Start Address Register 2
REG[7Eh] Read/Write
n/a
PIP
+
Window
Display Start
Address
Bit 16
7 6 5 4 3 2 10